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000
FXUS66 KMTR 281147
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
347 AM PST WED JAN 28 2015

.SYNOPSIS...DRY CONDITIONS ARE EXPECTED THROUGH SUNDAY MORNING...WITH
CHANCES OF SOME LIGHT RAIN THEN DEVELOPING OVER THE NORTHERN HALF
OF THE DISTRICT BEGINNING SUNDAY AFTERNOON AND EVENING...AND CONTINUING
INTO THE FIRST PART OF NEXT WEEK. BY MIDWEEK DRY CONDITIONS ARE
AGAIN PROJECTED TO PREVAIL ACROSS THE AREA. TEMPERATURES WILL GENERALLY
REMAIN ABOVE SEASONAL NORMS...WARMEST ON SATURDAY.

&&

.DISCUSSION...AS OF 3:30 AM PST WEDNESDAY...CLEAR TO PARTLY CLOUDY
SKIES PREVAIL ACROSS THE DISTRICT ALONG WITH SOME PATCHES OF FOG
IN THE NORTH BAY VALLEYS. LOWER ELEVATION TEMPERATURES ARE
GENERALLY IN THE MID 40S TO LOWER 50S.

THE WEAK UPPER LEVEL DISTURBANCE THAT BROUGHT SOME SHOWERS TO MORE
SOUTHERN PORTIONS OF OUR DISTRICT ON TUESDAY HAS NOW WEAKENED AND
MOVED NORTHEASTWARD INTO THE GREAT BASIN. ALTHOUGH SOUTHWESTERLY
FLOW ALOFT WILL CONTINUE OVER US FOR THE NEXT COUPLE OF DAYS...LATEST
MODEL OUTPUT REMAINS IN EXCELLENT AGREEMENT THAT ALL PRECIP ASSOCIATED
WITH THE NEXT DISTURBANCE WILL STAY WELL TO OUR SOUTHEAST WHEN IT
MOVES INLAND THURSDAY NIGHT AND FRIDAY. DRY CONDITIONS ARE THUS
EXPECTED TO PREVAIL DISTRICTWIDE THROUGH THE END OF THE WEEK AND
INTO THE WEEKEND. THIS WOULD THEN BRING TO A CLOSE AN HISTORICALLY
DRY MONTH OF JANUARY. FOR DOWNTOWN SAN FRANCISCO FOR EXAMPLE...THIS
WOULD THEN BECOME THE FIRST JANUARY SINCE PRECIPITATION RECORDS
BEGAN IN 1850...165 YEARS AGO...FOR THERE TO BE NO MEASURABLE
PRECIPITATION AT ALL.

NOT MUCH TEMPERATURE CHANGE IS EXPECTED FOR THE NEXT COUPLE OF
DAYS WITH DAYTIME TEMPERATURES GENERALLY CONTINUING TO BE ABOVE
NORMAL.

FRIDAY NIGHT AND SATURDAY...HIGH PRESSURE AT THE SURFACE AND ALOFT
WILL BUILD ALONG THE WEST COAST AND THEN INTO THE NORTHERN GREAT
BASIN ALONG WITH WARMING OF THE AIR MASS OVER US. THE NET RESULT
WILL BE CLEAR SKIES AND AFTERNOON TEMPERATURES LOCALLY GETTING
BACK UP INTO THE 70S.

IN THE LONGER RANGE...LATEST RUNS OF BOTH THE ECMWF AND GFS MODELS
FLATTEN THE UPPER LEVEL RIDGE AND THEN DRAG A BAND OF LIGHT RAIN
ASSOCIATED WITH THE TAIL END OF A WEAK PACIFIC FRONTAL SYSTEM INTO
THE NORTHERN PORTION OF OUR DISTRICT. TIMING HOWEVER DIFFERS...
WITH THE 00Z ECMWF OUTPUT FOCUSING ON THE SUNDAY AFTERNOON AND
EVENING TIME FRAME WHILE BOTH THE 00Z AND JUST REC`D 06Z GFS
OUTPUT DELAYS IT UNTIL LATER SUNDAY NIGHT INTO MONDAY. BOTH ARE IN
AGREEMENT THOUGH THAT TOTALS WILL BE LESS THAN 1/4 INCH...AND THAT
RENEWED LARGE SCALE UPPER LEVEL RIDGE DEVELOPMENT WILL OCCUR OVER
THE WEST COAST AS WE HEAD INTO THE MIDDLE OF NEXT WEAK...AND THUS DRY
CONDITIONS RETURNING DISTRICTWIDE.

&&

.AVIATION...AS OF 3:46 AM PST WEDNESDAY...HIGH PRESSURE WILL
CONTINUE TO BUILD OVER THE CENTRAL COAST TODAY WITH LIGHT OFFSHORE
FLOW AT THE SURFACE. THE COMBINATION OF LIGHT OFFSHORE FLOW AND HIGH
PRESSURE ALOFT WILL MAINTAIN CLEAR SKIES AT THE TERMINALS TODAY WITH
THE EXCEPTION OF KSTS WHICH MAY EXPERIENCE A PERIOD OF DENSE FOG
THIS MORNING.

VICINITY OF KSFO...VFR AND GENERALLY LIGHT WINDS ARE EXPECTED TO
PREVAIL TODAY WITH A GENTLE SEA BREEZE THIS AFTERNOON.

CONFIDENCE IS HIGH.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR AND GENERALLY LIGHT WINDS ARE
EXPECTED TO PREVAIL TODAY. EASTERLY WINDS ARE EXPECTED TO CONTINUE TO
PERSIST INTO THE LATE MORNING HOURS WITH A GENTLE SEA BREEZE THIS
AFTERNOON.

CONFIDENCE IS HIGH.

&&

.MARINE...AS OF 03:46 AM PST WEDNESDAY...GENERALLY LIGHT WINDS ARE
EXPECTED TO PERSIST OVER THE COASTAL WATERS TODAY. WINDS WILL
BEGIN TO STRENGTHEN OUT OF THE NORTHWEST THURSDAY AS A THERMAL
TROUGH DEVELOPS ALONG THE COAST...MAINTAINING MODERATE NORTHERLY
WINDS THROUGH FRIDAY. THE THERMAL TROUGH IS ANTICIPATED TO SLIDE
OFFSHORE THIS WEEKEND...RESULTING IN LIGHT WINDS ACROSS THE
WATERS. A LONG PERIOD SWELL WILL MOVE INTO THE COASTAL WATERS
THURSDAY MORNING.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: BLIER
AVIATION/MARINE: LARRY

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 281147
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
347 AM PST WED JAN 28 2015

.SYNOPSIS...DRY CONDITIONS ARE EXPECTED THROUGH SUNDAY MORNING...WITH
CHANCES OF SOME LIGHT RAIN THEN DEVELOPING OVER THE NORTHERN HALF
OF THE DISTRICT BEGINNING SUNDAY AFTERNOON AND EVENING...AND CONTINUING
INTO THE FIRST PART OF NEXT WEEK. BY MIDWEEK DRY CONDITIONS ARE
AGAIN PROJECTED TO PREVAIL ACROSS THE AREA. TEMPERATURES WILL GENERALLY
REMAIN ABOVE SEASONAL NORMS...WARMEST ON SATURDAY.

&&

.DISCUSSION...AS OF 3:30 AM PST WEDNESDAY...CLEAR TO PARTLY CLOUDY
SKIES PREVAIL ACROSS THE DISTRICT ALONG WITH SOME PATCHES OF FOG
IN THE NORTH BAY VALLEYS. LOWER ELEVATION TEMPERATURES ARE
GENERALLY IN THE MID 40S TO LOWER 50S.

THE WEAK UPPER LEVEL DISTURBANCE THAT BROUGHT SOME SHOWERS TO MORE
SOUTHERN PORTIONS OF OUR DISTRICT ON TUESDAY HAS NOW WEAKENED AND
MOVED NORTHEASTWARD INTO THE GREAT BASIN. ALTHOUGH SOUTHWESTERLY
FLOW ALOFT WILL CONTINUE OVER US FOR THE NEXT COUPLE OF DAYS...LATEST
MODEL OUTPUT REMAINS IN EXCELLENT AGREEMENT THAT ALL PRECIP ASSOCIATED
WITH THE NEXT DISTURBANCE WILL STAY WELL TO OUR SOUTHEAST WHEN IT
MOVES INLAND THURSDAY NIGHT AND FRIDAY. DRY CONDITIONS ARE THUS
EXPECTED TO PREVAIL DISTRICTWIDE THROUGH THE END OF THE WEEK AND
INTO THE WEEKEND. THIS WOULD THEN BRING TO A CLOSE AN HISTORICALLY
DRY MONTH OF JANUARY. FOR DOWNTOWN SAN FRANCISCO FOR EXAMPLE...THIS
WOULD THEN BECOME THE FIRST JANUARY SINCE PRECIPITATION RECORDS
BEGAN IN 1850...165 YEARS AGO...FOR THERE TO BE NO MEASURABLE
PRECIPITATION AT ALL.

NOT MUCH TEMPERATURE CHANGE IS EXPECTED FOR THE NEXT COUPLE OF
DAYS WITH DAYTIME TEMPERATURES GENERALLY CONTINUING TO BE ABOVE
NORMAL.

FRIDAY NIGHT AND SATURDAY...HIGH PRESSURE AT THE SURFACE AND ALOFT
WILL BUILD ALONG THE WEST COAST AND THEN INTO THE NORTHERN GREAT
BASIN ALONG WITH WARMING OF THE AIR MASS OVER US. THE NET RESULT
WILL BE CLEAR SKIES AND AFTERNOON TEMPERATURES LOCALLY GETTING
BACK UP INTO THE 70S.

IN THE LONGER RANGE...LATEST RUNS OF BOTH THE ECMWF AND GFS MODELS
FLATTEN THE UPPER LEVEL RIDGE AND THEN DRAG A BAND OF LIGHT RAIN
ASSOCIATED WITH THE TAIL END OF A WEAK PACIFIC FRONTAL SYSTEM INTO
THE NORTHERN PORTION OF OUR DISTRICT. TIMING HOWEVER DIFFERS...
WITH THE 00Z ECMWF OUTPUT FOCUSING ON THE SUNDAY AFTERNOON AND
EVENING TIME FRAME WHILE BOTH THE 00Z AND JUST REC`D 06Z GFS
OUTPUT DELAYS IT UNTIL LATER SUNDAY NIGHT INTO MONDAY. BOTH ARE IN
AGREEMENT THOUGH THAT TOTALS WILL BE LESS THAN 1/4 INCH...AND THAT
RENEWED LARGE SCALE UPPER LEVEL RIDGE DEVELOPMENT WILL OCCUR OVER
THE WEST COAST AS WE HEAD INTO THE MIDDLE OF NEXT WEAK...AND THUS DRY
CONDITIONS RETURNING DISTRICTWIDE.

&&

.AVIATION...AS OF 3:46 AM PST WEDNESDAY...HIGH PRESSURE WILL
CONTINUE TO BUILD OVER THE CENTRAL COAST TODAY WITH LIGHT OFFSHORE
FLOW AT THE SURFACE. THE COMBINATION OF LIGHT OFFSHORE FLOW AND HIGH
PRESSURE ALOFT WILL MAINTAIN CLEAR SKIES AT THE TERMINALS TODAY WITH
THE EXCEPTION OF KSTS WHICH MAY EXPERIENCE A PERIOD OF DENSE FOG
THIS MORNING.

VICINITY OF KSFO...VFR AND GENERALLY LIGHT WINDS ARE EXPECTED TO
PREVAIL TODAY WITH A GENTLE SEA BREEZE THIS AFTERNOON.

CONFIDENCE IS HIGH.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR AND GENERALLY LIGHT WINDS ARE
EXPECTED TO PREVAIL TODAY. EASTERLY WINDS ARE EXPECTED TO CONTINUE TO
PERSIST INTO THE LATE MORNING HOURS WITH A GENTLE SEA BREEZE THIS
AFTERNOON.

CONFIDENCE IS HIGH.

&&

.MARINE...AS OF 03:46 AM PST WEDNESDAY...GENERALLY LIGHT WINDS ARE
EXPECTED TO PERSIST OVER THE COASTAL WATERS TODAY. WINDS WILL
BEGIN TO STRENGTHEN OUT OF THE NORTHWEST THURSDAY AS A THERMAL
TROUGH DEVELOPS ALONG THE COAST...MAINTAINING MODERATE NORTHERLY
WINDS THROUGH FRIDAY. THE THERMAL TROUGH IS ANTICIPATED TO SLIDE
OFFSHORE THIS WEEKEND...RESULTING IN LIGHT WINDS ACROSS THE
WATERS. A LONG PERIOD SWELL WILL MOVE INTO THE COASTAL WATERS
THURSDAY MORNING.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: BLIER
AVIATION/MARINE: LARRY

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA







000
FXUS66 KMTR 281144
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
344 AM PST WED JAN 28 2015

.SYNOPSIS...DRY CONDITIONS ARE EXPECTED THROUGH SUNDAY MORNING...WITH
CHANCES OF SOME LIGHT RAIN THEN DEVELOPING OVER THE NORTHERN HALF
OF THE DISTRICT BEGINNING SUNDAY AFTERNOON AND EVENING...AND CONTINUING
INTO THE FIRST PART OF NEXT WEEK. BY MIDWEEK DRY CONDITIONS ARE
AGAIN PROJECTED TO PREVAIL ACROSS THE AREA. TEMPERATURES WILL GENERALLY
REMAIN ABOVE SEASONAL NORMS...WARMEST ON SATURDAY.

&&

.DISCUSSION...AS OF 3:30 AM PST WEDNESDAY...CLEAR TO PARTLY CLOUDY
SKIES PREVAIL ACROSS THE DISTRICT ALONG WITH SOME PATCHES OF FOG
IN THE NORTH BAY VALLEYS. LOWER ELEVATION TEMPERATURES ARE
GENERALLY IN THE MID 40S TO LOWER 50S.

THE WEAK UPPER LEVEL DISTURBANCE THAT BROUGHT SOME SHOWERS TO MORE
SOUTHERN PORTIONS OF OUR DISTRICT ON TUESDAY HAS NOW WEAKENED AND
MOVED NORTHEASTWARD INTO THE GREAT BASIN. ALTHOUGH SOUTHWESTERLY
FLOW ALOFT WILL CONTINUE OVER US FOR THE NEXT COUPLE OF DAYS...LATEST
MODEL OUTPUT REMAINS IN EXCELLENT AGREEMENT THAT ALL PRECIP ASSOCIATED
WITH THE NEXT DISTURBANCE WILL STAY WELL TO OUR SOUTHEAST WHEN IT
MOVES INLAND THURSDAY NIGHT AND FRIDAY. DRY CONDITIONS ARE THUS
EXPECTED TO PREVAIL DISTRICTWIDE THROUGH THE END OF THE WEEK AND
INTO THE WEEKEND. THIS WOULD THEN BRING TO A CLOSE AN HISTORICALLY
DRY MONTH OF JANUARY. FOR DOWNTOWN SAN FRANCISCO FOR EXAMPLE...THIS
WOULD THEN BECOME THE FIRST JANUARY SINCE PRECIPITATION RECORDS
BEGAN IN 1850...165 YEARS AGO...FOR THERE TO BE NO MEASURABLE
PRECIPITATION AT ALL.

NOT MUCH TEMPERATURE CHANGE IS EXPECTED FOR THE NEXT COUPLE OF
DAYS WITH DAYTIME TEMPERATURES GENERALLY CONTINUING TO BE ABOVE
NORMAL.

FRIDAY NIGHT AND SATURDAY...HIGH PRESSURE AT THE SURFACE AND ALOFT
WILL BUILD ALONG THE WEST COAST AND THEN INTO THE NORTHERN GREAT
BASIN ALONG WITH WARMING OF THE AIR MASS OVER US. THE NET RESULT
WILL BE CLEAR SKIES AND AFTERNOON TEMPERATURES LOCALLY GETTING
BACK UP INTO THE 70S.

IN THE LONGER RANGE...LATEST RUNS OF BOTH THE ECMWF AND GFS MODELS
FLATTEN THE UPPER LEVEL RIDGE AND THEN DRAG A BAND OF LIGHT RAIN
ASSOCIATED WITH THE TAIL END OF A WEAK PACIFIC FRONTAL SYSTEM INTO
THE NORTHERN PORTION OF OUR DISTRICT. TIMING HOWEVER DIFFERS...
WITH THE 00Z ECMWF OUTPUT FOCUSING ON THE SUNDAY AFTERNOON AND
EVENING TIME FRAME WHILE BOTH THE 00Z AND JUST REC`D 06Z GFS
OUTPUT DELAYS IT UNTIL LATER SUNDAY NIGHT INTO MONDAY. BOTH ARE IN
AGREEMENT THOUGH THAT TOTALS WILL BE LESS THAN 1/4 INCH...AND THAT
RENEWED LARGE SCALE UPPER LEVEL RIDGE DEVELOPMENT WILL OCCUR OVER
THE WEST COAST AS WE HEAD INTO THE MIDDLE OF NEXT WEAK...AND THUS DRY
CONDITIONS RETURNING DISTRICTWIDE.

&&

.AVIATION...AS OF 9:47 PM PST TUESDAY...FOR 06Z TAFS. JUST
EXPECTING HIGH CLOUDS OVERNIGHT INTO WEDS WITH LIGHT WINDS.

VICINITY OF KSFO...VFR. SCATTERED HIGH CLOUDS WITH LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. HIGH CLOUDS AND LIGHT WINDS.

&&

.MARINE...AS OF 9:47 PM PST TUESDAY...LIGHT WIND AND SEAS
OVERNIGHT INTO WEDNESDAY MORNING. WINDS WILL GRADUALLY TURN W TO
NW WEDNESDAY AFTERNOON INTO THURSDAY WITH STRONGER NW WINDS BY THE
END OF THE WEEK. BUILDING HIGH PRESSURE OVER THE WEEKEND WILL KEEP
NORTH WINDS IN PLACE WITH LIGHT TO MODERATE SEAS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: BLIER
AVIATION/MARINE: RWW

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA







000
FXUS66 KMTR 281144
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
344 AM PST WED JAN 28 2015

.SYNOPSIS...DRY CONDITIONS ARE EXPECTED THROUGH SUNDAY MORNING...WITH
CHANCES OF SOME LIGHT RAIN THEN DEVELOPING OVER THE NORTHERN HALF
OF THE DISTRICT BEGINNING SUNDAY AFTERNOON AND EVENING...AND CONTINUING
INTO THE FIRST PART OF NEXT WEEK. BY MIDWEEK DRY CONDITIONS ARE
AGAIN PROJECTED TO PREVAIL ACROSS THE AREA. TEMPERATURES WILL GENERALLY
REMAIN ABOVE SEASONAL NORMS...WARMEST ON SATURDAY.

&&

.DISCUSSION...AS OF 3:30 AM PST WEDNESDAY...CLEAR TO PARTLY CLOUDY
SKIES PREVAIL ACROSS THE DISTRICT ALONG WITH SOME PATCHES OF FOG
IN THE NORTH BAY VALLEYS. LOWER ELEVATION TEMPERATURES ARE
GENERALLY IN THE MID 40S TO LOWER 50S.

THE WEAK UPPER LEVEL DISTURBANCE THAT BROUGHT SOME SHOWERS TO MORE
SOUTHERN PORTIONS OF OUR DISTRICT ON TUESDAY HAS NOW WEAKENED AND
MOVED NORTHEASTWARD INTO THE GREAT BASIN. ALTHOUGH SOUTHWESTERLY
FLOW ALOFT WILL CONTINUE OVER US FOR THE NEXT COUPLE OF DAYS...LATEST
MODEL OUTPUT REMAINS IN EXCELLENT AGREEMENT THAT ALL PRECIP ASSOCIATED
WITH THE NEXT DISTURBANCE WILL STAY WELL TO OUR SOUTHEAST WHEN IT
MOVES INLAND THURSDAY NIGHT AND FRIDAY. DRY CONDITIONS ARE THUS
EXPECTED TO PREVAIL DISTRICTWIDE THROUGH THE END OF THE WEEK AND
INTO THE WEEKEND. THIS WOULD THEN BRING TO A CLOSE AN HISTORICALLY
DRY MONTH OF JANUARY. FOR DOWNTOWN SAN FRANCISCO FOR EXAMPLE...THIS
WOULD THEN BECOME THE FIRST JANUARY SINCE PRECIPITATION RECORDS
BEGAN IN 1850...165 YEARS AGO...FOR THERE TO BE NO MEASURABLE
PRECIPITATION AT ALL.

NOT MUCH TEMPERATURE CHANGE IS EXPECTED FOR THE NEXT COUPLE OF
DAYS WITH DAYTIME TEMPERATURES GENERALLY CONTINUING TO BE ABOVE
NORMAL.

FRIDAY NIGHT AND SATURDAY...HIGH PRESSURE AT THE SURFACE AND ALOFT
WILL BUILD ALONG THE WEST COAST AND THEN INTO THE NORTHERN GREAT
BASIN ALONG WITH WARMING OF THE AIR MASS OVER US. THE NET RESULT
WILL BE CLEAR SKIES AND AFTERNOON TEMPERATURES LOCALLY GETTING
BACK UP INTO THE 70S.

IN THE LONGER RANGE...LATEST RUNS OF BOTH THE ECMWF AND GFS MODELS
FLATTEN THE UPPER LEVEL RIDGE AND THEN DRAG A BAND OF LIGHT RAIN
ASSOCIATED WITH THE TAIL END OF A WEAK PACIFIC FRONTAL SYSTEM INTO
THE NORTHERN PORTION OF OUR DISTRICT. TIMING HOWEVER DIFFERS...
WITH THE 00Z ECMWF OUTPUT FOCUSING ON THE SUNDAY AFTERNOON AND
EVENING TIME FRAME WHILE BOTH THE 00Z AND JUST REC`D 06Z GFS
OUTPUT DELAYS IT UNTIL LATER SUNDAY NIGHT INTO MONDAY. BOTH ARE IN
AGREEMENT THOUGH THAT TOTALS WILL BE LESS THAN 1/4 INCH...AND THAT
RENEWED LARGE SCALE UPPER LEVEL RIDGE DEVELOPMENT WILL OCCUR OVER
THE WEST COAST AS WE HEAD INTO THE MIDDLE OF NEXT WEAK...AND THUS DRY
CONDITIONS RETURNING DISTRICTWIDE.

&&

.AVIATION...AS OF 9:47 PM PST TUESDAY...FOR 06Z TAFS. JUST
EXPECTING HIGH CLOUDS OVERNIGHT INTO WEDS WITH LIGHT WINDS.

VICINITY OF KSFO...VFR. SCATTERED HIGH CLOUDS WITH LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. HIGH CLOUDS AND LIGHT WINDS.

&&

.MARINE...AS OF 9:47 PM PST TUESDAY...LIGHT WIND AND SEAS
OVERNIGHT INTO WEDNESDAY MORNING. WINDS WILL GRADUALLY TURN W TO
NW WEDNESDAY AFTERNOON INTO THURSDAY WITH STRONGER NW WINDS BY THE
END OF THE WEEK. BUILDING HIGH PRESSURE OVER THE WEEKEND WILL KEEP
NORTH WINDS IN PLACE WITH LIGHT TO MODERATE SEAS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: BLIER
AVIATION/MARINE: RWW

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
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000
FXUS66 KMTR 280547
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
947 PM PST TUE JAN 27 2015

.SYNOPSIS...DRY CONDITIONS ARE EXPECTED THROUGH THE WEEKEND WITH
ABOVE NORMAL TEMPERATURES.

&&

.DISCUSSION...AS OF 9:00 PM PST TUESDAY...WEAK UPPER LEVEL LOW
OVER NEVADA CONTINUES TO MOVE NORTHEAST. SPLIT FLOW ALONG THE WEST
COAST BROUGHT LIGHT RAIN TO SOUTHERN CALIFORNIA LAST NIGHT WHILE
THE NORTHERN BRANCH IS WELL TO THE NORTH OVER WESTERN CANADA.
THIS WILL CONTINUE THE NEXT COUPLE OF DAYS AS ANOTHER UPPER LOW
DEVELOPS OFF THE SOUTHERN CALIFORNIA COAST THURSDAY AND MOVES INTO
THE DESERT SOUTHWEST FRIDAY AND SATURDAY. MOISTURE DRAWN UP FROM
THIS SYSTEM WILL BE SHUNTED INTO FAR SOUTHERN CALIFORNIA ARIZONA
AND NEW MEXICO. NO RAIN FOR OUR CWA.

SOUTHWEST FLOW ALOFT BROUGHT ANOTHER DAY OF ABOVE NORMAL TEMPERATURES
TO THE AREA. A RECORD HIGH TEMPERATURE WAS SET AT SAN FRANCISCO
AIRPORT TODAY. NOT MUCH TEMPERATURE CHANGE IS EXPECTED FOR THE
NEXT COUPLE OF DAYS WITH TEMPERATURES REMAINING ABOVE NORMAL.

AN UPPER LEVEL RIDGE WILL MOVE OVER THE AREA FRIDAY AN SATURDAY
BEHIND THE UPPER LOW WITH WEAK OFFSHORE FLOW AT THE SURFACE. THIS
WILL ALLOW TEMPERATURES TO WARM UP EVEN MORE REACHING THE MID 60S
TO MID 70S WHICH COULD CHALLENGE MORE RECORD HIGHS. AND MOST OF
THOSE RECORD HIGHS WERE JUST SET LAST YEAR!

MEDIUM RANGE MODELS SHOW THE RIDGE FLATTENING SUNDAY AND MONDAY
AS A STORM SYSTEM MOVES INTO THE PACIFIC NORTHWEST. SOME RAIN
COULD MAKE IT INTO NORTHERN CALIFORNIA BUT WILL STAY NORTH OF THE
CWA. RIDGING BUILDS BACK OVER THE AREA THE MIDDLE OF NEXT WEEK.
THE EPIC DROUGHT CONTINUES FOR THE SFO AND MRY BAY AREAS.

&&

.AVIATION...AS OF 9:47 PM PST TUESDAY...FOR 06Z TAFS. JUST
EXPECTING HIGH CLOUDS OVERNIGHT INTO WEDS WITH LIGHT WINDS.

VICINITY OF KSFO...VFR. SCATTERED HIGH CLOUDS WITH LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. HIGH CLOUDS AND LIGHT WINDS.

&&

.MARINE...AS OF 9:47 PM PST TUESDAY...LIGHT WIND AND SEAS
OVERNIGHT INTO WEDNESDAY MORNING. WINDS WILL GRADUALLY TURN W TO
NW WEDNESDAY AFTERNOON INTO THURSDAY WITH STRONGER NW WINDS BY THE
END OF THE WEEK. BUILDING HIGH PRESSURE OVER THE WEEKEND WILL KEEP
NORTH WINDS IN PLACE WITH LIGHT TO MODERATE SEAS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: W PI
AVIATION/MARINE: RWW

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
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000
FXUS66 KMTR 280504
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
904 PM PST TUE JAN 27 2015

.SYNOPSIS...DRY CONDITIONS ARE EXPECTED THROUGH THE WEEKEND WITH
ABOVE NORMAL TEMPERATURES.

&&

.DISCUSSION...AS OF 9:00 PM PST TUESDAY...WEAK UPPER LEVEL LOW
OVER NEVADA CONTINUES TO MOVE NORTHEAST. SPLIT FLOW ALONG THE WEST
COAST BROUGHT LIGHT RAIN TO SOUTHERN CALIFORNIA LAST NIGHT WHILE
THE NORTHERN BRANCH IS WELL TO THE NORTH OVER WESTERN CANADA.
THIS WILL CONTINUE THE NEXT COUPLE OF DAYS AS ANOTHER UPPER LOW
DEVELOPS OFF THE SOUTHERN CALIFORNIA COAST THURSDAY AND MOVES INTO
THE DESERT SOUTHWEST FRIDAY AND SATURDAY. MOISTURE DRAWN UP FROM
THIS SYSTEM WILL BE SHUNTED INTO FAR SOUTHERN CALIFORNIA ARIZONA
AND NEW MEXICO. NO RAIN FOR OUR CWA.

SOUTHWEST FLOW ALOFT BROUGHT ANOTHER DAY OF ABOVE NORMAL TEMPERATURES
TO THE AREA. A RECORD HIGH TEMPERATURE WAS SET AT SAN FRANCISCO
AIRPORT TODAY. NOT MUCH TEMPERATURE CHANGE IS EXPECTED FOR THE
NEXT COUPLE OF DAYS WITH TEMPERATURES REMAINING ABOVE NORMAL.

AN UPPER LEVEL RIDGE WILL MOVE OVER THE AREA FRIDAY AN SATURDAY
BEHIND THE UPPER LOW WITH WEAK OFFSHORE FLOW AT THE SURFACE. THIS
WILL ALLOW TEMPERATURES TO WARM UP EVEN MORE REACHING THE MID 60S
TO MID 70S WHICH COULD CHALLENGE MORE RECORD HIGHS. AND MOST OF
THOSE RECORD HIGHS WERE JUST SET LAST YEAR!

MEDIUM RANGE MODELS SHOW THE RIDGE FLATTENING SUNDAY AND MONDAY
AS A STORM SYSTEM MOVES INTO THE PACIFIC NORTHWEST. SOME RAIN
COULD MAKE IT INTO NORTHERN CALIFORNIA BUT WILL STAY NORTH OF THE
CWA. RIDGING BUILDS BACK OVER THE AREA THE MIDDLE OF NEXT WEEK.
THE EPIC DROUGHT CONTINUES FOR THE SFO AND MRY BAY AREAS.

&&

.AVIATION...AS OF 4:21 PM PST TUESDAY...FOR 00Z TAFS. MAINLY
DEALING WITH HIGH CLOUDS IN THE WAKE OF TODAYS WEAK WEATHER
SYSTEM. TAFS WILL SHOW VFR CONDITIONS WITH HIGH CLOUDS. AT THIS
TIME NOT EXPECTING FOG OVERNIGHT. LIGHT WINDS.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. HIGH CLOUDS AND LIGHT WINDS.

&&

.MARINE...AS OF 9:00 PM PST TUESDAY...LIGHT WIND AND SEAS
OVERNIGHT INTO WEDNESDAY MORNING. WINDS WILL GRADUALLY TURN W TO
NW WEDNESDAY AFTERNOON INTO THURSDAY WITH STRONGER NW WINDS BY THE
END OF THE WEEK. BUILDING HIGH PRESSURE OVER THE WEEKEND WILL KEEP
NORTH WINDS IN PLACE WITH LIGHT TO MODERATE SEAS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: W PI
AVIATION: RWW
MARINE: MM

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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WWW.TWITTER.COM/NWSBAYAREA
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000
FXUS66 KMTR 280504
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
904 PM PST TUE JAN 27 2015

.SYNOPSIS...DRY CONDITIONS ARE EXPECTED THROUGH THE WEEKEND WITH
ABOVE NORMAL TEMPERATURES.

&&

.DISCUSSION...AS OF 9:00 PM PST TUESDAY...WEAK UPPER LEVEL LOW
OVER NEVADA CONTINUES TO MOVE NORTHEAST. SPLIT FLOW ALONG THE WEST
COAST BROUGHT LIGHT RAIN TO SOUTHERN CALIFORNIA LAST NIGHT WHILE
THE NORTHERN BRANCH IS WELL TO THE NORTH OVER WESTERN CANADA.
THIS WILL CONTINUE THE NEXT COUPLE OF DAYS AS ANOTHER UPPER LOW
DEVELOPS OFF THE SOUTHERN CALIFORNIA COAST THURSDAY AND MOVES INTO
THE DESERT SOUTHWEST FRIDAY AND SATURDAY. MOISTURE DRAWN UP FROM
THIS SYSTEM WILL BE SHUNTED INTO FAR SOUTHERN CALIFORNIA ARIZONA
AND NEW MEXICO. NO RAIN FOR OUR CWA.

SOUTHWEST FLOW ALOFT BROUGHT ANOTHER DAY OF ABOVE NORMAL TEMPERATURES
TO THE AREA. A RECORD HIGH TEMPERATURE WAS SET AT SAN FRANCISCO
AIRPORT TODAY. NOT MUCH TEMPERATURE CHANGE IS EXPECTED FOR THE
NEXT COUPLE OF DAYS WITH TEMPERATURES REMAINING ABOVE NORMAL.

AN UPPER LEVEL RIDGE WILL MOVE OVER THE AREA FRIDAY AN SATURDAY
BEHIND THE UPPER LOW WITH WEAK OFFSHORE FLOW AT THE SURFACE. THIS
WILL ALLOW TEMPERATURES TO WARM UP EVEN MORE REACHING THE MID 60S
TO MID 70S WHICH COULD CHALLENGE MORE RECORD HIGHS. AND MOST OF
THOSE RECORD HIGHS WERE JUST SET LAST YEAR!

MEDIUM RANGE MODELS SHOW THE RIDGE FLATTENING SUNDAY AND MONDAY
AS A STORM SYSTEM MOVES INTO THE PACIFIC NORTHWEST. SOME RAIN
COULD MAKE IT INTO NORTHERN CALIFORNIA BUT WILL STAY NORTH OF THE
CWA. RIDGING BUILDS BACK OVER THE AREA THE MIDDLE OF NEXT WEEK.
THE EPIC DROUGHT CONTINUES FOR THE SFO AND MRY BAY AREAS.

&&

.AVIATION...AS OF 4:21 PM PST TUESDAY...FOR 00Z TAFS. MAINLY
DEALING WITH HIGH CLOUDS IN THE WAKE OF TODAYS WEAK WEATHER
SYSTEM. TAFS WILL SHOW VFR CONDITIONS WITH HIGH CLOUDS. AT THIS
TIME NOT EXPECTING FOG OVERNIGHT. LIGHT WINDS.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. HIGH CLOUDS AND LIGHT WINDS.

&&

.MARINE...AS OF 9:00 PM PST TUESDAY...LIGHT WIND AND SEAS
OVERNIGHT INTO WEDNESDAY MORNING. WINDS WILL GRADUALLY TURN W TO
NW WEDNESDAY AFTERNOON INTO THURSDAY WITH STRONGER NW WINDS BY THE
END OF THE WEEK. BUILDING HIGH PRESSURE OVER THE WEEKEND WILL KEEP
NORTH WINDS IN PLACE WITH LIGHT TO MODERATE SEAS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: W PI
AVIATION: RWW
MARINE: MM

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000
FXUS66 KMTR 280022
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
422 PM PST TUE JAN 27 2015

.SYNOPSIS...AS THE WEAK STORM SYSTEM FROM THE MORNING MOVES
EAST THIS AFTERNOON...DRY AND MILD CONDITIONS RETURN FOR THE
REMAINDER OF THE WEEK INTO THE WEEKEND.

&&

.DISCUSSION...AS OF 2:30 PM PST TUESDAY...LIGHT RAIN FELL THIS
MORNING ACROSS AREAS SOUTH OF SAN JOSE. WHILE THERE WERE REPORTS
OF DRIZZLE IN THE SANTA CLARA VALLEY...MEASURABLE PRECIP WAS
GENERALLY CONFINED TO SOUTHERN MONTEREY AND SAN BENITO COUNTY. THE
MARQUEZ RAWS AT 2500 FEET IN SAN BENITO COUNTY REPORTED THE
HIGHEST TOTAL AT THREE TENTHS OF AN INCH. ELSEWHERE TOTALS WERE
GENERALLY LESS THAN A QUARTER OF AN INCH. VERTICAL PROFILING RADAR
SHOWS SIGNIFICANT MOISTURE IN THE MID TO UPPER LEVELS OF THE
ATMOSPHERE HOWEVER IT REMAINS VERY DRY BELOW. SKIES REMAIN
OVERCAST THIS AFTERNOON AS THE SHORTWAVE THAT BROUGHT WITH IT THE
LIGHT RAIN PUSHED OFF THE NORTHEAST.

THE LONGWAVE RIDGE OVER THE AREA WILL REMAIN KEEPING WEATHER DRY
AND MILD. ANOTHER SHORTWAVE MOVES UP FROM THE TROPICAL PACIFIC THE
SOUTHWEST FRIDAY. MODELS AGREE THAT PRECIPITATION FROM THIS SYSTEM
WILL STAY WELL TO THE SOUTH OF THE CWA...MORE SO THAN WITH THE
RAIN TODAY.

AS THE LATE WEEK SHORTWAVE PUSHES EAST OUT OF SOUTHERN CALIFORNIA
THE RIDGE OFFSHORE STRENGTHENS AND NUDGES IN TO THE WEST COAST.
THIS WILL DRIVE TEMPERATURES WARMER INTO THE UPPER 60S AND LOW
70S. MEDIUM RANGE MODEL SOLUTIONS DIVERGE BY EARLY NEXT WEEK WITH
THE GFS HOLDING ON TO THE RIDGE AND THUS WARMER TEMPERATURES WHILE
THE ECMWF PARTIALLY COLLAPSES THE RIDGE WHILE SHORTWAVES MOVE
THROUGH THE PACIFIC NORTHWEST.

FURTHER AHEAD THE NAEFS ENSEMBLE MEAN HAS RIDGING GENERALLY
CONTINUE WELL INTO THE SECOND WEEK OF FEBRUARY. THE CLIMATE
PREDICTION CENTER OUTLOOKS WARMER AND DRYER THAN NORMAL THROUGH
DAY 14.

&&

.AVIATION...AS OF 4:21 PM PST TUESDAY...FOR 00Z TAFS. MAINLY
DEALING WITH HIGH CLOUDS IN THE WAKE OF TODAYS WEAK WEATHER
SYSTEM. TAFS WILL SHOW VFR CONDITIONS WITH HIGH CLOUDS. AT THIS
TIME NOT EXPECTING FOG OVERNIGHT. LIGHT WINDS.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. HIGH CLOUDS AND LIGHT WINDS.

&&

.MARINE...AS OF 4:21 PM PST TUESDAY...A WEAK LOW PRESSURE NEAR
SOUTHERN CALIFORNIA WILL MAINTAIN SOUTHERLY WINDS OVER THE COASTAL
WATERS. BY MIDWEEK...HIGH PRESSURE BUILDS OFF OVER THE EASTERN
PACIFIC RESULTING IN MODERATE TO GUSTY NORTHWEST WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: AC
AVIATION: RWW
MARINE: MM

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000
FXUS66 KMTR 280022
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
422 PM PST TUE JAN 27 2015

.SYNOPSIS...AS THE WEAK STORM SYSTEM FROM THE MORNING MOVES
EAST THIS AFTERNOON...DRY AND MILD CONDITIONS RETURN FOR THE
REMAINDER OF THE WEEK INTO THE WEEKEND.

&&

.DISCUSSION...AS OF 2:30 PM PST TUESDAY...LIGHT RAIN FELL THIS
MORNING ACROSS AREAS SOUTH OF SAN JOSE. WHILE THERE WERE REPORTS
OF DRIZZLE IN THE SANTA CLARA VALLEY...MEASURABLE PRECIP WAS
GENERALLY CONFINED TO SOUTHERN MONTEREY AND SAN BENITO COUNTY. THE
MARQUEZ RAWS AT 2500 FEET IN SAN BENITO COUNTY REPORTED THE
HIGHEST TOTAL AT THREE TENTHS OF AN INCH. ELSEWHERE TOTALS WERE
GENERALLY LESS THAN A QUARTER OF AN INCH. VERTICAL PROFILING RADAR
SHOWS SIGNIFICANT MOISTURE IN THE MID TO UPPER LEVELS OF THE
ATMOSPHERE HOWEVER IT REMAINS VERY DRY BELOW. SKIES REMAIN
OVERCAST THIS AFTERNOON AS THE SHORTWAVE THAT BROUGHT WITH IT THE
LIGHT RAIN PUSHED OFF THE NORTHEAST.

THE LONGWAVE RIDGE OVER THE AREA WILL REMAIN KEEPING WEATHER DRY
AND MILD. ANOTHER SHORTWAVE MOVES UP FROM THE TROPICAL PACIFIC THE
SOUTHWEST FRIDAY. MODELS AGREE THAT PRECIPITATION FROM THIS SYSTEM
WILL STAY WELL TO THE SOUTH OF THE CWA...MORE SO THAN WITH THE
RAIN TODAY.

AS THE LATE WEEK SHORTWAVE PUSHES EAST OUT OF SOUTHERN CALIFORNIA
THE RIDGE OFFSHORE STRENGTHENS AND NUDGES IN TO THE WEST COAST.
THIS WILL DRIVE TEMPERATURES WARMER INTO THE UPPER 60S AND LOW
70S. MEDIUM RANGE MODEL SOLUTIONS DIVERGE BY EARLY NEXT WEEK WITH
THE GFS HOLDING ON TO THE RIDGE AND THUS WARMER TEMPERATURES WHILE
THE ECMWF PARTIALLY COLLAPSES THE RIDGE WHILE SHORTWAVES MOVE
THROUGH THE PACIFIC NORTHWEST.

FURTHER AHEAD THE NAEFS ENSEMBLE MEAN HAS RIDGING GENERALLY
CONTINUE WELL INTO THE SECOND WEEK OF FEBRUARY. THE CLIMATE
PREDICTION CENTER OUTLOOKS WARMER AND DRYER THAN NORMAL THROUGH
DAY 14.

&&

.AVIATION...AS OF 4:21 PM PST TUESDAY...FOR 00Z TAFS. MAINLY
DEALING WITH HIGH CLOUDS IN THE WAKE OF TODAYS WEAK WEATHER
SYSTEM. TAFS WILL SHOW VFR CONDITIONS WITH HIGH CLOUDS. AT THIS
TIME NOT EXPECTING FOG OVERNIGHT. LIGHT WINDS.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. HIGH CLOUDS AND LIGHT WINDS.

&&

.MARINE...AS OF 4:21 PM PST TUESDAY...A WEAK LOW PRESSURE NEAR
SOUTHERN CALIFORNIA WILL MAINTAIN SOUTHERLY WINDS OVER THE COASTAL
WATERS. BY MIDWEEK...HIGH PRESSURE BUILDS OFF OVER THE EASTERN
PACIFIC RESULTING IN MODERATE TO GUSTY NORTHWEST WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: AC
AVIATION: RWW
MARINE: MM

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000
FXUS66 KMTR 272234
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
234 PM PST TUE JAN 27 2015

.SYNOPSIS...AS THE WEAK STORM SYSTEM FROM THE MORNING MOVES
EAST THIS AFTERNOON...DRY AND MILD CONDITIONS RETURN FOR THE
REMAINDER OF THE WEEK INTO THE WEEKEND.

&&

.DISCUSSION...AS OF 02:30 PM PST TUESDAY...LIGHT RAIN FELL THIS
MORNING ACROSS AREAS SOUTH OF SAN JOSE. WHILE THERE WERE REPORTS
OF DRIZZLE IN THE SANTA CLARA VALLEY...MEASURABLE PRECIP WAS
GENERALLY CONFINED TO SOUTHERN MONTEREY AND SAN BENITO COUNTY. THE
MARQUEZ RAWS AT 2500 FEET IN SAN BENITO COUNTY REPORTED THE
HIGHEST TOTAL AT THREE TENTHS OF AN INCH. ELSEWHERE TOTALS WERE
GENERALLY LESS THAN A QUARTER OF AN INCH. VERTICAL PROFILING RADAR
SHOWS SIGNIFICANT MOISTURE IN THE MID TO UPPER LEVELS OF THE
ATMOSPHERE HOWEVER IT REMAINS VERY DRY BELOW. SKIES REMAIN
OVERCAST THIS AFTERNOON AS THE SHORTWAVE THAT BROUGHT WITH IT THE
LIGHT RAIN PUSHED OFF THE NORTHEAST.

THE LONGWAVE RIDGE OVER THE AREA WILL REMAIN KEEPING WEATHER DRY
AND MILD. ANOTHER SHORTWAVE MOVES UP FROM THE TROPICAL PACIFIC THE
SOUTHWEST FRIDAY. MODELS AGREE THAT PRECIPITATION FROM THIS SYSTEM
WILL STAY WELL TO THE SOUTH OF THE CWA...MORE SO THAN WITH THE
RAIN TODAY.

AS THE LATE WEEK SHORTWAVE PUSHES EAST OUT OF SOUTHERN CALIFORNIA
THE RIDGE OFFSHORE STRENGTHENS AND NUDGES IN TO THE WEST COAST.
THIS WILL DRIVE TEMPERATURES WARMER INTO THE UPPER 60S AND LOW
70S. MEDIUM RANGE MODEL SOLUTIONS DIVERGE BY EARLY NEXT WEEK WITH
THE GFS HOLDING ON TO THE RIDGE AND THUS WARMER TEMPERATURES WHILE
THE ECMWF PARTIALLY COLLAPSES THE RIDGE WHILE SHORTWAVES MOVE
THROUGH THE PACIFIC NORTHWEST.

FURTHER AHEAD THE NAEFS ENSEMBLE MEAN HAS RIDGING GENERALLY
CONTINUE WELL INTO THE SECOND WEEK OF FEBRUARY. THE CLIMATE
PREDICTION CENTER OUTLOOKS WARMER AND DRYER THAN NORMAL THROUGH
DAY 14.

&&

.AVIATION...AS OF 9:34 AM PST TUESDAY...RATHER BENIGN WEATHER FROM
AN AVIATION STANDPOINT. MID AND HIGH LEVEL CLOUDS BLANKET THE
AREA. GUSTY EASTERLY WINDS WILL CONTINUE TO WEAKEN THIS MORNING.
VFR THROUGH THE PERIOD.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 09:34 AM PST TUESDAY...SOUTHERLY FLOW WILL PREVAIL
ALONG THE CENTRAL COAST THROUGH MIDWEEK AS A WEAK WEATHER SYSTEM
MOVES INTO SOUTHERN CALIFORNIA. HIGH PRESSURE WILL BUILD WEDNESDAY
INTO THURSDAY OVER THE EASTERN PACIFIC RESULTING IN NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: AC
AVIATION/MARINE: MM

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 272234
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
234 PM PST TUE JAN 27 2015

.SYNOPSIS...AS THE WEAK STORM SYSTEM FROM THE MORNING MOVES
EAST THIS AFTERNOON...DRY AND MILD CONDITIONS RETURN FOR THE
REMAINDER OF THE WEEK INTO THE WEEKEND.

&&

.DISCUSSION...AS OF 02:30 PM PST TUESDAY...LIGHT RAIN FELL THIS
MORNING ACROSS AREAS SOUTH OF SAN JOSE. WHILE THERE WERE REPORTS
OF DRIZZLE IN THE SANTA CLARA VALLEY...MEASURABLE PRECIP WAS
GENERALLY CONFINED TO SOUTHERN MONTEREY AND SAN BENITO COUNTY. THE
MARQUEZ RAWS AT 2500 FEET IN SAN BENITO COUNTY REPORTED THE
HIGHEST TOTAL AT THREE TENTHS OF AN INCH. ELSEWHERE TOTALS WERE
GENERALLY LESS THAN A QUARTER OF AN INCH. VERTICAL PROFILING RADAR
SHOWS SIGNIFICANT MOISTURE IN THE MID TO UPPER LEVELS OF THE
ATMOSPHERE HOWEVER IT REMAINS VERY DRY BELOW. SKIES REMAIN
OVERCAST THIS AFTERNOON AS THE SHORTWAVE THAT BROUGHT WITH IT THE
LIGHT RAIN PUSHED OFF THE NORTHEAST.

THE LONGWAVE RIDGE OVER THE AREA WILL REMAIN KEEPING WEATHER DRY
AND MILD. ANOTHER SHORTWAVE MOVES UP FROM THE TROPICAL PACIFIC THE
SOUTHWEST FRIDAY. MODELS AGREE THAT PRECIPITATION FROM THIS SYSTEM
WILL STAY WELL TO THE SOUTH OF THE CWA...MORE SO THAN WITH THE
RAIN TODAY.

AS THE LATE WEEK SHORTWAVE PUSHES EAST OUT OF SOUTHERN CALIFORNIA
THE RIDGE OFFSHORE STRENGTHENS AND NUDGES IN TO THE WEST COAST.
THIS WILL DRIVE TEMPERATURES WARMER INTO THE UPPER 60S AND LOW
70S. MEDIUM RANGE MODEL SOLUTIONS DIVERGE BY EARLY NEXT WEEK WITH
THE GFS HOLDING ON TO THE RIDGE AND THUS WARMER TEMPERATURES WHILE
THE ECMWF PARTIALLY COLLAPSES THE RIDGE WHILE SHORTWAVES MOVE
THROUGH THE PACIFIC NORTHWEST.

FURTHER AHEAD THE NAEFS ENSEMBLE MEAN HAS RIDGING GENERALLY
CONTINUE WELL INTO THE SECOND WEEK OF FEBRUARY. THE CLIMATE
PREDICTION CENTER OUTLOOKS WARMER AND DRYER THAN NORMAL THROUGH
DAY 14.

&&

.AVIATION...AS OF 9:34 AM PST TUESDAY...RATHER BENIGN WEATHER FROM
AN AVIATION STANDPOINT. MID AND HIGH LEVEL CLOUDS BLANKET THE
AREA. GUSTY EASTERLY WINDS WILL CONTINUE TO WEAKEN THIS MORNING.
VFR THROUGH THE PERIOD.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 09:34 AM PST TUESDAY...SOUTHERLY FLOW WILL PREVAIL
ALONG THE CENTRAL COAST THROUGH MIDWEEK AS A WEAK WEATHER SYSTEM
MOVES INTO SOUTHERN CALIFORNIA. HIGH PRESSURE WILL BUILD WEDNESDAY
INTO THURSDAY OVER THE EASTERN PACIFIC RESULTING IN NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: AC
AVIATION/MARINE: MM

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 271739
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
939 AM PST TUE JAN 27 2015

.SYNOPSIS...A WEAK UPPER LEVEL SYSTEM WILL CONTINUE TO MOVE
ACROSS CENTRAL CALIFORNIA AND BRING LIGHT PRECIPITATION TO
PORTIONS OF THE CENTRAL COAST THROUGH THIS AFTERNOON. DRY WEATHER
CONDITIONS AND MILD TEMPERATURES RETURN WEDNESDAY AND PERSIST INTO
THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION.

&&

.DISCUSSION...AS OF 08:30 AM PST TUESDAY...LIGHT RAIN CONTINUES
OVER THE SOUTHERN HALF OF THE AREA THIS MORNING. A SPOTTER
REPORTED DRIZZLE AS FAR NORTH AS GILROY HOWEVER MEASURABLE
RAINFALL HAS BEEN CONFINED TO AREAS OF SOUTHERN MONTEREY AND SAN
BENITO COUNTIES. TOTALS ARE AS HIGH AS A QUARTER INCH HOWEVER MOST
SITES ARE CLOSER TO A TENTH. PRECIP IS EXPECTED TO CONTINUE THIS
MORNING THOUGH IT WILL REMAIN LIGHT. FORECAST REMAINS ON TRACK AND
NO MAJOR UPDATES ARE ANTICIPATED.

&&

.PREV DISCUSSION...AS OF 03:19 AM PST TUESDAY...LIGHT RAIN BEING
REPORTED ACROSS SOUTHERN MONTEREY AND SAN BENITO COUNTIES EARLY
THIS MORNING UNDERNEATH A CLOUD DECK GENERALLY ABOVE 5KFT BASED
OFF RECENT AUTOMATED OBSERVATIONS. THIS PRECIPITATION IS A RESULT
OF A WEAK MID/UPPER LEVEL LOW PRESSURE SYSTEM THAT CONTINUES TO
MOVE NORTHWARD ACROSS SOUTHERN AND CENTRAL CALIFORNIA. WHILE MID-
LEVEL MOISTURE CONTINUES TO ADVECT NORTHWARD OVER THE REGION THIS
MORNING...THE LOWER LEVELS OF REMAIN RELATIVELY DRY. GIVEN
THIS...EXPECTING PRECIPITATION TO REMAIN LIGHT ESPECIALLY GIVEN
THE WEAK MID/UPPER LEVEL SUPPORT ASSOCIATED WITH THE SYSTEM. THE
LATEST MODEL ANALYSIS SHOWS THE UPPER LOW ALREADY BECOMING MORE
DISORGANIZED AT THIS HOUR AND IS FORECAST TO BECOME AN OPEN WAVE
LATER TODAY AS IT BEGINS TO SHIFT TOWARD THE NORTHEAST. ASIDE
FROM LINGERING SHOWERS THROUGH THE EARLY AFTERNOON...PRECIPITATION
CHANCES QUICKLY DROP OFF LATER TODAY AS THE SYSTEM PULLS AWAY FROM
OUR REGION.

ANOTHER WEAK MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE
SYSTEM IS FORECAST TO UNDERCUT THE LARGER SCALE RIDGE AND
APPROACH SOUTHERN CALIFORNIA LATER THIS WEEK. THE MODELS
GENERALLY AGREE THIS SYSTEM WILL STAY WELL ENOUGH TO OUR SOUTH
AND WILL LACK NEEDED MOISTURE/SUPPORT TO BRING PRECIPITATION TO
OUR REGION. THUS...DRY WEATHER CONDITIONS WILL PERSIST THROUGH
THE REMAINDER OF THE WORK WEEK AS THE RIDGE OFF OF THE WEST COAST
STRENGTHENS.

THE RIDGE ALOFT WILL THEN NOSE INTO NORTHERN CALIFORNIA DURING
THE UPCOMING WEEKEND AND BRING A WARMING TREND BACK TO THE
MONTEREY/SAN FRANCISCO BAY AREA. DAYTIME TEMPERATURES WILL LIKELY
WARM INTO THE UPPER 60S TO 70S ONCE AGAIN BY SATURDAY AND SUNDAY.
THESE ABOVE AVERAGE TEMPERATURES AND DRY CONDITIONS WILL LIKELY
PERSIST AT LEAST INTO THE BEGINNING OF NEXT WEEK.

&&

.AVIATION...AS OF 9:34 AM PST TUESDAY...RATHER BENIGN WEATHER FROM
AN AVIATION STANDPOINT. MID AND HIGH LEVEL CLOUDS BLANKET THE
AREA. GUSTY EASTERLY WINDS WILL CONTINUE TO WEAKEN THIS MORNING.
VFR THROUGH THE PERIOD.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 09:34 AM PST TUESDAY...SOUTHERLY FLOW WILL PREVAIL
ALONG THE CENTRAL COAST THROUGH MIDWEEK AS A WEAK WEATHER SYSTEM
MOVES INTO SOUTHERN CALIFORNIA. HIGH PRESSURE WILL BUILD WEDNESDAY
INTO THURSDAY OVER THE EASTERN PACIFIC RESULTING IN NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS/AC
AVIATION/MARINE: MM

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000
FXUS66 KMTR 271739
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
939 AM PST TUE JAN 27 2015

.SYNOPSIS...A WEAK UPPER LEVEL SYSTEM WILL CONTINUE TO MOVE
ACROSS CENTRAL CALIFORNIA AND BRING LIGHT PRECIPITATION TO
PORTIONS OF THE CENTRAL COAST THROUGH THIS AFTERNOON. DRY WEATHER
CONDITIONS AND MILD TEMPERATURES RETURN WEDNESDAY AND PERSIST INTO
THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION.

&&

.DISCUSSION...AS OF 08:30 AM PST TUESDAY...LIGHT RAIN CONTINUES
OVER THE SOUTHERN HALF OF THE AREA THIS MORNING. A SPOTTER
REPORTED DRIZZLE AS FAR NORTH AS GILROY HOWEVER MEASURABLE
RAINFALL HAS BEEN CONFINED TO AREAS OF SOUTHERN MONTEREY AND SAN
BENITO COUNTIES. TOTALS ARE AS HIGH AS A QUARTER INCH HOWEVER MOST
SITES ARE CLOSER TO A TENTH. PRECIP IS EXPECTED TO CONTINUE THIS
MORNING THOUGH IT WILL REMAIN LIGHT. FORECAST REMAINS ON TRACK AND
NO MAJOR UPDATES ARE ANTICIPATED.

&&

.PREV DISCUSSION...AS OF 03:19 AM PST TUESDAY...LIGHT RAIN BEING
REPORTED ACROSS SOUTHERN MONTEREY AND SAN BENITO COUNTIES EARLY
THIS MORNING UNDERNEATH A CLOUD DECK GENERALLY ABOVE 5KFT BASED
OFF RECENT AUTOMATED OBSERVATIONS. THIS PRECIPITATION IS A RESULT
OF A WEAK MID/UPPER LEVEL LOW PRESSURE SYSTEM THAT CONTINUES TO
MOVE NORTHWARD ACROSS SOUTHERN AND CENTRAL CALIFORNIA. WHILE MID-
LEVEL MOISTURE CONTINUES TO ADVECT NORTHWARD OVER THE REGION THIS
MORNING...THE LOWER LEVELS OF REMAIN RELATIVELY DRY. GIVEN
THIS...EXPECTING PRECIPITATION TO REMAIN LIGHT ESPECIALLY GIVEN
THE WEAK MID/UPPER LEVEL SUPPORT ASSOCIATED WITH THE SYSTEM. THE
LATEST MODEL ANALYSIS SHOWS THE UPPER LOW ALREADY BECOMING MORE
DISORGANIZED AT THIS HOUR AND IS FORECAST TO BECOME AN OPEN WAVE
LATER TODAY AS IT BEGINS TO SHIFT TOWARD THE NORTHEAST. ASIDE
FROM LINGERING SHOWERS THROUGH THE EARLY AFTERNOON...PRECIPITATION
CHANCES QUICKLY DROP OFF LATER TODAY AS THE SYSTEM PULLS AWAY FROM
OUR REGION.

ANOTHER WEAK MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE
SYSTEM IS FORECAST TO UNDERCUT THE LARGER SCALE RIDGE AND
APPROACH SOUTHERN CALIFORNIA LATER THIS WEEK. THE MODELS
GENERALLY AGREE THIS SYSTEM WILL STAY WELL ENOUGH TO OUR SOUTH
AND WILL LACK NEEDED MOISTURE/SUPPORT TO BRING PRECIPITATION TO
OUR REGION. THUS...DRY WEATHER CONDITIONS WILL PERSIST THROUGH
THE REMAINDER OF THE WORK WEEK AS THE RIDGE OFF OF THE WEST COAST
STRENGTHENS.

THE RIDGE ALOFT WILL THEN NOSE INTO NORTHERN CALIFORNIA DURING
THE UPCOMING WEEKEND AND BRING A WARMING TREND BACK TO THE
MONTEREY/SAN FRANCISCO BAY AREA. DAYTIME TEMPERATURES WILL LIKELY
WARM INTO THE UPPER 60S TO 70S ONCE AGAIN BY SATURDAY AND SUNDAY.
THESE ABOVE AVERAGE TEMPERATURES AND DRY CONDITIONS WILL LIKELY
PERSIST AT LEAST INTO THE BEGINNING OF NEXT WEEK.

&&

.AVIATION...AS OF 9:34 AM PST TUESDAY...RATHER BENIGN WEATHER FROM
AN AVIATION STANDPOINT. MID AND HIGH LEVEL CLOUDS BLANKET THE
AREA. GUSTY EASTERLY WINDS WILL CONTINUE TO WEAKEN THIS MORNING.
VFR THROUGH THE PERIOD.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 09:34 AM PST TUESDAY...SOUTHERLY FLOW WILL PREVAIL
ALONG THE CENTRAL COAST THROUGH MIDWEEK AS A WEAK WEATHER SYSTEM
MOVES INTO SOUTHERN CALIFORNIA. HIGH PRESSURE WILL BUILD WEDNESDAY
INTO THURSDAY OVER THE EASTERN PACIFIC RESULTING IN NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS/AC
AVIATION/MARINE: MM

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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000
FXUS66 KMTR 271638
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
838 AM PST TUE JAN 27 2015

.SYNOPSIS...A WEAK UPPER LEVEL SYSTEM WILL CONTINUE TO MOVE
ACROSS CENTRAL CALIFORNIA AND BRING LIGHT PRECIPITATION TO
PORTIONS OF THE CENTRAL COAST THROUGH THIS AFTERNOON. DRY WEATHER
CONDITIONS AND MILD TEMPERATURES RETURN WEDNESDAY AND PERSIST INTO
THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION.

&&

.DISCUSSION...AS OF 08:30 AM PST TUESDAY...LIGHT RAIN CONTINUES
OVER THE SOUTHERN HALF OF THE AREA THIS MORNING. A SPOTTER
REPORTED DRIZZLE AS FAR NORTH AS GILROY HOWEVER MEASURABLE
RAINFALL HAS BEEN CONFINED TO AREAS OF SOUTHERN MONTEREY AND SAN
BENITO COUNTIES. TOTALS ARE AS HIGH AS A QUARTER INCH HOWEVER MOST
SITES ARE CLOSER TO A TENTH. PRECIP IS EXPECTED TO CONTINUE THIS
MORNING THOUGH IT WILL REMAIN LIGHT. FORECAST REMAINS ON TRACK AND
NO MAJOR UPDATES ARE ANTICIPATED.

&&

.PREV DISCUSSION...AS OF 03:19 AM PST TUESDAY...LIGHT RAIN BEING
REPORTED ACROSS SOUTHERN MONTEREY AND SAN BENITO COUNTIES EARLY
THIS MORNING UNDERNEATH A CLOUD DECK GENERALLY ABOVE 5KFT BASED
OFF RECENT AUTOMATED OBSERVATIONS. THIS PRECIPITATION IS A RESULT
OF A WEAK MID/UPPER LEVEL LOW PRESSURE SYSTEM THAT CONTINUES TO
MOVE NORTHWARD ACROSS SOUTHERN AND CENTRAL CALIFORNIA. WHILE MID-
LEVEL MOISTURE CONTINUES TO ADVECT NORTHWARD OVER THE REGION THIS
MORNING...THE LOWER LEVELS OF REMAIN RELATIVELY DRY. GIVEN
THIS...EXPECTING PRECIPITATION TO REMAIN LIGHT ESPECIALLY GIVEN
THE WEAK MID/UPPER LEVEL SUPPORT ASSOCIATED WITH THE SYSTEM. THE
LATEST MODEL ANALYSIS SHOWS THE UPPER LOW ALREADY BECOMING MORE
DISORGANIZED AT THIS HOUR AND IS FORECAST TO BECOME AN OPEN WAVE
LATER TODAY AS IT BEGINS TO SHIFT TOWARD THE NORTHEAST. ASIDE
FROM LINGERING SHOWERS THROUGH THE EARLY AFTERNOON...PRECIPITATION
CHANCES QUICKLY DROP OFF LATER TODAY AS THE SYSTEM PULLS AWAY FROM
OUR REGION.

ANOTHER WEAK MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE
SYSTEM IS FORECAST TO UNDERCUT THE LARGER SCALE RIDGE AND
APPROACH SOUTHERN CALIFORNIA LATER THIS WEEK. THE MODELS
GENERALLY AGREE THIS SYSTEM WILL STAY WELL ENOUGH TO OUR SOUTH
AND WILL LACK NEEDED MOISTURE/SUPPORT TO BRING PRECIPITATION TO
OUR REGION. THUS...DRY WEATHER CONDITIONS WILL PERSIST THROUGH
THE REMAINDER OF THE WORK WEEK AS THE RIDGE OFF OF THE WEST COAST
STRENGTHENS.

THE RIDGE ALOFT WILL THEN NOSE INTO NORTHERN CALIFORNIA DURING
THE UPCOMING WEEKEND AND BRING A WARMING TREND BACK TO THE
MONTEREY/SAN FRANCISCO BAY AREA. DAYTIME TEMPERATURES WILL LIKELY
WARM INTO THE UPPER 60S TO 70S ONCE AGAIN BY SATURDAY AND SUNDAY.
THESE ABOVE AVERAGE TEMPERATURES AND DRY CONDITIONS WILL LIKELY
PERSIST AT LEAST INTO THE BEGINNING OF NEXT WEEK.

&&

.AVIATION...AS OF 3:42 AM PST TUESDAY...MID AND HIGH LEVEL CLOUDS
WILL CONTINUE TO STREAM ACROSS THE REGION TODAY AS A WEAK WEATHER
SYSTEM MOVES OVER THE CENTRAL COAST. MAINLY VFR CONDITIONS ARE
EXPECTED THROUGH THE FORECAST PERIOD. LIGHT AND LOCALLY VARIABLE
WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 2:06 AM PST TUESDAY...A WEAK WEATHER SYSTEM
MOVING ACROSS THE REGION WILL RESULT IN LIGHT SOUTHERLY WINDS
ACROSS THE COASTAL WATERS. BY MIDWEEK HIGH PRESSURE WILL BUILD OFF
THE NORTHERN CALIFORNIA COAST BRINGING LIGHT TO MODERATE NORTHWEST
WINDS TO THE COASTAL WATERS FOR THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION/MARINE: CW

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 271638
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
838 AM PST TUE JAN 27 2015

.SYNOPSIS...A WEAK UPPER LEVEL SYSTEM WILL CONTINUE TO MOVE
ACROSS CENTRAL CALIFORNIA AND BRING LIGHT PRECIPITATION TO
PORTIONS OF THE CENTRAL COAST THROUGH THIS AFTERNOON. DRY WEATHER
CONDITIONS AND MILD TEMPERATURES RETURN WEDNESDAY AND PERSIST INTO
THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION.

&&

.DISCUSSION...AS OF 08:30 AM PST TUESDAY...LIGHT RAIN CONTINUES
OVER THE SOUTHERN HALF OF THE AREA THIS MORNING. A SPOTTER
REPORTED DRIZZLE AS FAR NORTH AS GILROY HOWEVER MEASURABLE
RAINFALL HAS BEEN CONFINED TO AREAS OF SOUTHERN MONTEREY AND SAN
BENITO COUNTIES. TOTALS ARE AS HIGH AS A QUARTER INCH HOWEVER MOST
SITES ARE CLOSER TO A TENTH. PRECIP IS EXPECTED TO CONTINUE THIS
MORNING THOUGH IT WILL REMAIN LIGHT. FORECAST REMAINS ON TRACK AND
NO MAJOR UPDATES ARE ANTICIPATED.

&&

.PREV DISCUSSION...AS OF 03:19 AM PST TUESDAY...LIGHT RAIN BEING
REPORTED ACROSS SOUTHERN MONTEREY AND SAN BENITO COUNTIES EARLY
THIS MORNING UNDERNEATH A CLOUD DECK GENERALLY ABOVE 5KFT BASED
OFF RECENT AUTOMATED OBSERVATIONS. THIS PRECIPITATION IS A RESULT
OF A WEAK MID/UPPER LEVEL LOW PRESSURE SYSTEM THAT CONTINUES TO
MOVE NORTHWARD ACROSS SOUTHERN AND CENTRAL CALIFORNIA. WHILE MID-
LEVEL MOISTURE CONTINUES TO ADVECT NORTHWARD OVER THE REGION THIS
MORNING...THE LOWER LEVELS OF REMAIN RELATIVELY DRY. GIVEN
THIS...EXPECTING PRECIPITATION TO REMAIN LIGHT ESPECIALLY GIVEN
THE WEAK MID/UPPER LEVEL SUPPORT ASSOCIATED WITH THE SYSTEM. THE
LATEST MODEL ANALYSIS SHOWS THE UPPER LOW ALREADY BECOMING MORE
DISORGANIZED AT THIS HOUR AND IS FORECAST TO BECOME AN OPEN WAVE
LATER TODAY AS IT BEGINS TO SHIFT TOWARD THE NORTHEAST. ASIDE
FROM LINGERING SHOWERS THROUGH THE EARLY AFTERNOON...PRECIPITATION
CHANCES QUICKLY DROP OFF LATER TODAY AS THE SYSTEM PULLS AWAY FROM
OUR REGION.

ANOTHER WEAK MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE
SYSTEM IS FORECAST TO UNDERCUT THE LARGER SCALE RIDGE AND
APPROACH SOUTHERN CALIFORNIA LATER THIS WEEK. THE MODELS
GENERALLY AGREE THIS SYSTEM WILL STAY WELL ENOUGH TO OUR SOUTH
AND WILL LACK NEEDED MOISTURE/SUPPORT TO BRING PRECIPITATION TO
OUR REGION. THUS...DRY WEATHER CONDITIONS WILL PERSIST THROUGH
THE REMAINDER OF THE WORK WEEK AS THE RIDGE OFF OF THE WEST COAST
STRENGTHENS.

THE RIDGE ALOFT WILL THEN NOSE INTO NORTHERN CALIFORNIA DURING
THE UPCOMING WEEKEND AND BRING A WARMING TREND BACK TO THE
MONTEREY/SAN FRANCISCO BAY AREA. DAYTIME TEMPERATURES WILL LIKELY
WARM INTO THE UPPER 60S TO 70S ONCE AGAIN BY SATURDAY AND SUNDAY.
THESE ABOVE AVERAGE TEMPERATURES AND DRY CONDITIONS WILL LIKELY
PERSIST AT LEAST INTO THE BEGINNING OF NEXT WEEK.

&&

.AVIATION...AS OF 3:42 AM PST TUESDAY...MID AND HIGH LEVEL CLOUDS
WILL CONTINUE TO STREAM ACROSS THE REGION TODAY AS A WEAK WEATHER
SYSTEM MOVES OVER THE CENTRAL COAST. MAINLY VFR CONDITIONS ARE
EXPECTED THROUGH THE FORECAST PERIOD. LIGHT AND LOCALLY VARIABLE
WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 2:06 AM PST TUESDAY...A WEAK WEATHER SYSTEM
MOVING ACROSS THE REGION WILL RESULT IN LIGHT SOUTHERLY WINDS
ACROSS THE COASTAL WATERS. BY MIDWEEK HIGH PRESSURE WILL BUILD OFF
THE NORTHERN CALIFORNIA COAST BRINGING LIGHT TO MODERATE NORTHWEST
WINDS TO THE COASTAL WATERS FOR THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION/MARINE: CW

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA









000
FXUS66 KMTR 271142
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
342 AM PST TUE JAN 27 2015

.SYNOPSIS...A WEAK UPPER LEVEL SYSTEM WILL CONTINUE TO MOVE
ACROSS CENTRAL CALIFORNIA AND BRING LIGHT PRECIPITATION TO
PORTIONS OF THE CENTRAL COAST THROUGH THIS AFTERNOON. DRY WEATHER
CONDITIONS AND MILD TEMPERATURES RETURN WEDNESDAY AND PERSIST INTO
THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION.

&&

.DISCUSSION...AS OF 03:19 AM PST TUESDAY...LIGHT RAIN BEING
REPORTED ACROSS SOUTHERN MONTEREY AND SAN BENITO COUNTIES EARLY
THIS MORNING UNDERNEATH A CLOUD DECK GENERALLY ABOVE 5KFT BASED
OFF RECENT AUTOMATED OBSERVATIONS. THIS PRECIPITATION IS A RESULT
OF A WEAK MID/UPPER LEVEL LOW PRESSURE SYSTEM THAT CONTINUES TO
MOVE NORTHWARD ACROSS SOUTHERN AND CENTRAL CALIFORNIA. WHILE MID-
LEVEL MOISTURE CONTINUES TO ADVECT NORTHWARD OVER THE REGION THIS
MORNING...THE LOWER LEVELS OF REMAIN RELATIVELY DRY. GIVEN
THIS...EXPECTING PRECIPITATION TO REMAIN LIGHT ESPECIALLY GIVEN
THE WEAK MID/UPPER LEVEL SUPPORT ASSOCIATED WITH THE SYSTEM. THE
LATEST MODEL ANALYSIS SHOWS THE UPPER LOW ALREADY BECOMING MORE
DISORGANIZED AT THIS HOUR AND IS FORECAST TO BECOME AN OPEN WAVE
LATER TODAY AS IT BEGINS TO SHIFT TOWARD THE NORTHEAST. ASIDE
FROM LINGERING SHOWERS THROUGH THE EARLY AFTERNOON...PRECIPITATION
CHANCES QUICKLY DROP OFF LATER TODAY AS THE SYSTEM PULLS AWAY FROM
OUR REGION.

ANOTHER WEAK MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE
SYSTEM IS FORECAST TO UNDERCUT THE LARGER SCALE RIDGE AND
APPROACH SOUTHERN CALIFORNIA LATER THIS WEEK. THE MODELS
GENERALLY AGREE THIS SYSTEM WILL STAY WELL ENOUGH TO OUR SOUTH
AND WILL LACK NEEDED MOISTURE/SUPPORT TO BRING PRECIPITATION TO
OUR REGION. THUS...DRY WEATHER CONDITIONS WILL PERSIST THROUGH
THE REMAINDER OF THE WORK WEEK AS THE RIDGE OFF OF THE WEST COAST
STRENGTHENS.

THE RIDGE ALOFT WILL THEN NOSE INTO NORTHERN CALIFORNIA DURING
THE UPCOMING WEEKEND AND BRING A WARMING TREND BACK TO THE
MONTEREY/SAN FRANCISCO BAY AREA. DAYTIME TEMPERATURES WILL LIKELY
WARM INTO THE UPPER 60S TO 70S ONCE AGAIN BY SATURDAY AND SUNDAY.
THESE ABOVE AVERAGE TEMPERATURES AND DRY CONDITIONS WILL LIKELY
PERSIST AT LEAST INTO THE BEGINNING OF NEXT WEEK.

&&

.AVIATION...AS OF 3:42 AM PST TUESDAY...MID AND HIGH LEVEL CLOUDS
WILL CONTINUE TO STREAM ACROSS THE REGION TODAY AS A WEAK WEATHER
SYSTEM MOVES OVER THE CENTRAL COAST. MAINLY VFR CONDITIONS ARE
EXPECTED THROUGH THE FORECAST PERIOD. LIGHT AND LOCALLY VARIABLE
WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 2:06 AM PST TUESDAY...A WEAK WEATHER SYSTEM
MOVING ACROSS THE REGION WILL RESULT IN LIGHT SOUTHERLY WINDS
ACROSS THE COASTAL WATERS. BY MIDWEEK HIGH PRESSURE WILL BUILD OFF
THE NORTHERN CALIFORNIA COAST BRINGING LIGHT TO MODERATE NORTHWEST
WINDS TO THE COASTAL WATERS FOR THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION/MARINE: CW

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA







000
FXUS66 KMTR 271142
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
342 AM PST TUE JAN 27 2015

.SYNOPSIS...A WEAK UPPER LEVEL SYSTEM WILL CONTINUE TO MOVE
ACROSS CENTRAL CALIFORNIA AND BRING LIGHT PRECIPITATION TO
PORTIONS OF THE CENTRAL COAST THROUGH THIS AFTERNOON. DRY WEATHER
CONDITIONS AND MILD TEMPERATURES RETURN WEDNESDAY AND PERSIST INTO
THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION.

&&

.DISCUSSION...AS OF 03:19 AM PST TUESDAY...LIGHT RAIN BEING
REPORTED ACROSS SOUTHERN MONTEREY AND SAN BENITO COUNTIES EARLY
THIS MORNING UNDERNEATH A CLOUD DECK GENERALLY ABOVE 5KFT BASED
OFF RECENT AUTOMATED OBSERVATIONS. THIS PRECIPITATION IS A RESULT
OF A WEAK MID/UPPER LEVEL LOW PRESSURE SYSTEM THAT CONTINUES TO
MOVE NORTHWARD ACROSS SOUTHERN AND CENTRAL CALIFORNIA. WHILE MID-
LEVEL MOISTURE CONTINUES TO ADVECT NORTHWARD OVER THE REGION THIS
MORNING...THE LOWER LEVELS OF REMAIN RELATIVELY DRY. GIVEN
THIS...EXPECTING PRECIPITATION TO REMAIN LIGHT ESPECIALLY GIVEN
THE WEAK MID/UPPER LEVEL SUPPORT ASSOCIATED WITH THE SYSTEM. THE
LATEST MODEL ANALYSIS SHOWS THE UPPER LOW ALREADY BECOMING MORE
DISORGANIZED AT THIS HOUR AND IS FORECAST TO BECOME AN OPEN WAVE
LATER TODAY AS IT BEGINS TO SHIFT TOWARD THE NORTHEAST. ASIDE
FROM LINGERING SHOWERS THROUGH THE EARLY AFTERNOON...PRECIPITATION
CHANCES QUICKLY DROP OFF LATER TODAY AS THE SYSTEM PULLS AWAY FROM
OUR REGION.

ANOTHER WEAK MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE
SYSTEM IS FORECAST TO UNDERCUT THE LARGER SCALE RIDGE AND
APPROACH SOUTHERN CALIFORNIA LATER THIS WEEK. THE MODELS
GENERALLY AGREE THIS SYSTEM WILL STAY WELL ENOUGH TO OUR SOUTH
AND WILL LACK NEEDED MOISTURE/SUPPORT TO BRING PRECIPITATION TO
OUR REGION. THUS...DRY WEATHER CONDITIONS WILL PERSIST THROUGH
THE REMAINDER OF THE WORK WEEK AS THE RIDGE OFF OF THE WEST COAST
STRENGTHENS.

THE RIDGE ALOFT WILL THEN NOSE INTO NORTHERN CALIFORNIA DURING
THE UPCOMING WEEKEND AND BRING A WARMING TREND BACK TO THE
MONTEREY/SAN FRANCISCO BAY AREA. DAYTIME TEMPERATURES WILL LIKELY
WARM INTO THE UPPER 60S TO 70S ONCE AGAIN BY SATURDAY AND SUNDAY.
THESE ABOVE AVERAGE TEMPERATURES AND DRY CONDITIONS WILL LIKELY
PERSIST AT LEAST INTO THE BEGINNING OF NEXT WEEK.

&&

.AVIATION...AS OF 3:42 AM PST TUESDAY...MID AND HIGH LEVEL CLOUDS
WILL CONTINUE TO STREAM ACROSS THE REGION TODAY AS A WEAK WEATHER
SYSTEM MOVES OVER THE CENTRAL COAST. MAINLY VFR CONDITIONS ARE
EXPECTED THROUGH THE FORECAST PERIOD. LIGHT AND LOCALLY VARIABLE
WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 2:06 AM PST TUESDAY...A WEAK WEATHER SYSTEM
MOVING ACROSS THE REGION WILL RESULT IN LIGHT SOUTHERLY WINDS
ACROSS THE COASTAL WATERS. BY MIDWEEK HIGH PRESSURE WILL BUILD OFF
THE NORTHERN CALIFORNIA COAST BRINGING LIGHT TO MODERATE NORTHWEST
WINDS TO THE COASTAL WATERS FOR THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION/MARINE: CW

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA






000
FXUS66 KMTR 271122
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
322 AM PST TUE JAN 27 2015

.SYNOPSIS...A WEAK UPPER LEVEL SYSTEM WILL CONTINUE TO MOVE
ACROSS CENTRAL CALIFORNIA AND BRING LIGHT PRECIPITATION TO
PORTIONS OF THE CENTRAL COAST THROUGH THIS AFTERNOON. DRY WEATHER
CONDITIONS AND MILD TEMPERATURES RETURN WEDNESDAY AND PERSIST INTO
THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION.

&&

.DISCUSSION...AS OF 03:19 AM PST TUESDAY...LIGHT RAIN BEING
REPORTED ACROSS SOUTHERN MONTEREY AND SAN BENITO COUNTIES EARLY
THIS MORNING UNDERNEATH A CLOUD DECK GENERALLY ABOVE 5KFT BASED
OFF RECENT AUTOMATED OBSERVATIONS. THIS PRECIPITATION IS A RESULT
OF A WEAK MID/UPPER LEVEL LOW PRESSURE SYSTEM THAT CONTINUES TO
MOVE NORTHWARD ACROSS SOUTHERN AND CENTRAL CALIFORNIA. WHILE MID-
LEVEL MOISTURE CONTINUES TO ADVECT NORTHWARD OVER THE REGION THIS
MORNING...THE LOWER LEVELS OF REMAIN RELATIVELY DRY. GIVEN
THIS...EXPECTING PRECIPITATION TO REMAIN LIGHT ESPECIALLY GIVEN
THE WEAK MID/UPPER LEVEL SUPPORT ASSOCIATED WITH THE SYSTEM. THE
LATEST MODEL ANALYSIS SHOWS THE UPPER LOW ALREADY BECOMING MORE
DISORGANIZED AT THIS HOUR AND IS FORECAST TO BECOME AN OPEN WAVE
LATER TODAY AS IT BEGINS TO SHIFT TOWARD THE NORTHEAST. ASIDE
FROM LINGERING SHOWERS THROUGH THE EARLY AFTERNOON...PRECIPITATION
CHANCES QUICKLY DROP OFF LATER TODAY AS THE SYSTEM PULLS AWAY FROM
OUR REGION.

ANOTHER WEAK MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE
SYSTEM IS FORECAST TO UNDERCUT THE LARGER SCALE RIDGE AND
APPROACH SOUTHERN CALIFORNIA LATER THIS WEEK. THE MODELS
GENERALLY AGREE THIS SYSTEM WILL STAY WELL ENOUGH TO OUR SOUTH
AND WILL LACK NEEDED MOISTURE/SUPPORT TO BRING PRECIPITATION TO
OUR REGION. THUS...DRY WEATHER CONDITIONS WILL PERSIST THROUGH
THE REMAINDER OF THE WORK WEEK AS THE RIDGE OFF OF THE WEST COAST
STRENGTHENS.

THE RIDGE ALOFT WILL THEN NOSE INTO NORTHERN CALIFORNIA DURING
THE UPCOMING WEEKEND AND BRING A WARMING TREND BACK TO THE
MONTEREY/SAN FRANCISCO BAY AREA. DAYTIME TEMPERATURES WILL LIKELY
WARM INTO THE UPPER 60S TO 70S ONCE AGAIN BY SATURDAY AND SUNDAY.
THESE ABOVE AVERAGE TEMPERATURES AND DRY CONDITIONS WILL LIKELY
PERSIST AT LEAST INTO THE BEGINNING OF NEXT WEEK.

&&

.AVIATION...AS OF 9:50 PM PST MONDAY...MID AND HIGH LEVEL CLOUDS
WILL CONTINUE TO MOVE ACROSS THE REGION TONIGHT AND TUESDAY AS A
WEAK WEATHER SYSTEM SPINS OFF THE SOUTHERN CALIFORNIA COAST.
MAINLY VFR CONDITIONS ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN
FOG IN THE VALLEYS LATE TONIGHT AND EARLY TUESDAY. LIGHT AND
LOCALLY VARIABLE WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT AND VARIABLE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 03:19 AM PST TUESDAY...A WEAK WEATHER SYSTEM
MOVING ACROSS THE REGION WILL RESULT IN LIGHT SOUTHERLY WINDS
ACROSS THE COASTAL WATERS. BY MIDWEEK HIGH PRESSURE WILL BUILD OFF
THE NORTHERN CALIFORNIA COAST BRINGING LIGHT TO MODERATE NORTHWEST
WINDS TO THE COASTAL WATERS FOR THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION/MARINE: CW

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA






000
FXUS66 KMTR 271122
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
322 AM PST TUE JAN 27 2015

.SYNOPSIS...A WEAK UPPER LEVEL SYSTEM WILL CONTINUE TO MOVE
ACROSS CENTRAL CALIFORNIA AND BRING LIGHT PRECIPITATION TO
PORTIONS OF THE CENTRAL COAST THROUGH THIS AFTERNOON. DRY WEATHER
CONDITIONS AND MILD TEMPERATURES RETURN WEDNESDAY AND PERSIST INTO
THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION.

&&

.DISCUSSION...AS OF 03:19 AM PST TUESDAY...LIGHT RAIN BEING
REPORTED ACROSS SOUTHERN MONTEREY AND SAN BENITO COUNTIES EARLY
THIS MORNING UNDERNEATH A CLOUD DECK GENERALLY ABOVE 5KFT BASED
OFF RECENT AUTOMATED OBSERVATIONS. THIS PRECIPITATION IS A RESULT
OF A WEAK MID/UPPER LEVEL LOW PRESSURE SYSTEM THAT CONTINUES TO
MOVE NORTHWARD ACROSS SOUTHERN AND CENTRAL CALIFORNIA. WHILE MID-
LEVEL MOISTURE CONTINUES TO ADVECT NORTHWARD OVER THE REGION THIS
MORNING...THE LOWER LEVELS OF REMAIN RELATIVELY DRY. GIVEN
THIS...EXPECTING PRECIPITATION TO REMAIN LIGHT ESPECIALLY GIVEN
THE WEAK MID/UPPER LEVEL SUPPORT ASSOCIATED WITH THE SYSTEM. THE
LATEST MODEL ANALYSIS SHOWS THE UPPER LOW ALREADY BECOMING MORE
DISORGANIZED AT THIS HOUR AND IS FORECAST TO BECOME AN OPEN WAVE
LATER TODAY AS IT BEGINS TO SHIFT TOWARD THE NORTHEAST. ASIDE
FROM LINGERING SHOWERS THROUGH THE EARLY AFTERNOON...PRECIPITATION
CHANCES QUICKLY DROP OFF LATER TODAY AS THE SYSTEM PULLS AWAY FROM
OUR REGION.

ANOTHER WEAK MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE
SYSTEM IS FORECAST TO UNDERCUT THE LARGER SCALE RIDGE AND
APPROACH SOUTHERN CALIFORNIA LATER THIS WEEK. THE MODELS
GENERALLY AGREE THIS SYSTEM WILL STAY WELL ENOUGH TO OUR SOUTH
AND WILL LACK NEEDED MOISTURE/SUPPORT TO BRING PRECIPITATION TO
OUR REGION. THUS...DRY WEATHER CONDITIONS WILL PERSIST THROUGH
THE REMAINDER OF THE WORK WEEK AS THE RIDGE OFF OF THE WEST COAST
STRENGTHENS.

THE RIDGE ALOFT WILL THEN NOSE INTO NORTHERN CALIFORNIA DURING
THE UPCOMING WEEKEND AND BRING A WARMING TREND BACK TO THE
MONTEREY/SAN FRANCISCO BAY AREA. DAYTIME TEMPERATURES WILL LIKELY
WARM INTO THE UPPER 60S TO 70S ONCE AGAIN BY SATURDAY AND SUNDAY.
THESE ABOVE AVERAGE TEMPERATURES AND DRY CONDITIONS WILL LIKELY
PERSIST AT LEAST INTO THE BEGINNING OF NEXT WEEK.

&&

.AVIATION...AS OF 9:50 PM PST MONDAY...MID AND HIGH LEVEL CLOUDS
WILL CONTINUE TO MOVE ACROSS THE REGION TONIGHT AND TUESDAY AS A
WEAK WEATHER SYSTEM SPINS OFF THE SOUTHERN CALIFORNIA COAST.
MAINLY VFR CONDITIONS ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN
FOG IN THE VALLEYS LATE TONIGHT AND EARLY TUESDAY. LIGHT AND
LOCALLY VARIABLE WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT AND VARIABLE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 03:19 AM PST TUESDAY...A WEAK WEATHER SYSTEM
MOVING ACROSS THE REGION WILL RESULT IN LIGHT SOUTHERLY WINDS
ACROSS THE COASTAL WATERS. BY MIDWEEK HIGH PRESSURE WILL BUILD OFF
THE NORTHERN CALIFORNIA COAST BRINGING LIGHT TO MODERATE NORTHWEST
WINDS TO THE COASTAL WATERS FOR THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION/MARINE: CW

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 270557
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
957 PM PST MON JAN 26 2015

.SYNOPSIS...A WEAK STORM OVER SOUTHERN CALIFORNIA WILL SPREAD HIGH
CLOUDS OVER THE BAY AREA TONIGHT WITH A CHANCE OF SHOWERS FOR
SOUTHERN AND CENTRAL CALIFORNIA OVERNIGHT INTO TUESDAY MORNING.
THE SYSTEM WILL MOVE EASTWARD BY TUESDAY NIGHT WITH DRY AND MILD
WEATHER FORECAST WEDNESDAY THROUGH FRIDAY. A WARMING TREND IS
FORECAST OVER THE WEEKEND AS HIGH PRESSURE STRENGTHENS.

&&

.DISCUSSION...AS OF 8:45 PM PST MONDAY...UPPER LEVEL LOW OFF THE
SOUTHERN CALIFORNIA COAST HAS BROUGHT LIGHT RAIN TO THE LA AND SAN
DIEGO AREAS TODAY. THE LOW WILL MOVE NORTHEAST AND WEAKEN TONIGHT
BRINGING A CHANCE OF RAIN TO THE SOUTHERN PART OF THE CWA LATE
TONIGHT AND TUESDAY. SHORT RANGE MODELS ARE SHOWING A FEW
HUNDREDTHS OF AN INCH OVER MUCH OF MONTEREY AND SAN BENITO
COUNTIES AND AS FAR NORTH AS THE SANTA CRUZ MOUNTAINS AND SANTA
CLARA VALLEY. THESE AREAS HAVE THE BEST CHANCE FOR GETTING ANY
RAIN WHILE THE GREATER SFO BAY AREA HAVE ONLY A VERY SLIGHT
CHANCE. THE LOW WILL WEAKEN AND OPEN UP INTO A WAVE AS IT MOVES
INTO NEVADA TUESDAY AFTERNOON. BY THIS TIME THE MOISTURE WILL BE
EAST OF THE DISTRICT.

FROM PREVIOUS DISCUSSION...

AS THAT LOW MOVES TO OUR EAST THE SYNOPTIC PATTERN REMAINS FAIRLY
NONDESCRIPT WITH WEAK CYCLONIC FLOW ALOFT THAT MAY GENERATE SOME
SHOWERS OVER THE SIERRA BY THURSDAY BUT NO PRECIP FOR THE BAY
AREA. OUR TEMPERATURES WILL TREND SLIGHTLY ABOVE NORMAL WITH
AFTERNOON HIGHS IN THE 60S THROUGH THE WORK-WEEK.

ANOTHER WARM WEEKEND LOOKS TO BE IN STORE AS A RIDGE BUILDS
SATURDAY AND SUNDAY WITH 850 MB TEMPS TO AROUND 15 CELSIUS. DOESN`T
LOOK AS WARM AS LAST WEEKEND SO NOT EXPECTING ANY RECORDS.

THE PATTERN BEYOND SUNDAY BECOMES MORE MUDDLED. THE ECMWF AND GEM
MODEL ARE ACTUALLY TRENDING A LITTLE WETTER WHILE THE GFS REMAINS
DRY. GIVEN THE HISTORIC DRY PATTERN WERE UNDER WILL NOT BE
INTRODUCING DAY 7 POPS AT THIS TIME.

&&

.AVIATION...AS OF 9:50 PM PST MONDAY...MID AND HIGH LEVEL CLOUDS
WILL CONTINUE TO MOVE ACROSS THE REGION TONIGHT AND TUESDAY AS A
WEAK WEATHER SYSTEM SPINS OFF THE SOUTHERN CALIFORNIA COAST.
MAINLY VFR CONDITIONS ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN
FOG IN THE VALLEYS LATE TONIGHT AND EARLY TUESDAY. LIGHT AND
LOCALLY VARIABLE WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT AND VARIABLE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 09:55 PM PST MONDAY...A LOW PRESSURE OFFSHORE WILL
RESULT IN LIGHT SOUTHERLY WINDS ACROSS THE COASTAL WATERS. BY
MIDWEEK HIGH PRESSURE WILL BUILD OFF THE NORTHERN CALIFORNIA COAST
BRINGING LIGHT TO MODERATE NORTHWEST WINDS TO THE COASTAL WATERS
FOR THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: W PI/RWW
AVIATION/MARINE: CW

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 270557
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
957 PM PST MON JAN 26 2015

.SYNOPSIS...A WEAK STORM OVER SOUTHERN CALIFORNIA WILL SPREAD HIGH
CLOUDS OVER THE BAY AREA TONIGHT WITH A CHANCE OF SHOWERS FOR
SOUTHERN AND CENTRAL CALIFORNIA OVERNIGHT INTO TUESDAY MORNING.
THE SYSTEM WILL MOVE EASTWARD BY TUESDAY NIGHT WITH DRY AND MILD
WEATHER FORECAST WEDNESDAY THROUGH FRIDAY. A WARMING TREND IS
FORECAST OVER THE WEEKEND AS HIGH PRESSURE STRENGTHENS.

&&

.DISCUSSION...AS OF 8:45 PM PST MONDAY...UPPER LEVEL LOW OFF THE
SOUTHERN CALIFORNIA COAST HAS BROUGHT LIGHT RAIN TO THE LA AND SAN
DIEGO AREAS TODAY. THE LOW WILL MOVE NORTHEAST AND WEAKEN TONIGHT
BRINGING A CHANCE OF RAIN TO THE SOUTHERN PART OF THE CWA LATE
TONIGHT AND TUESDAY. SHORT RANGE MODELS ARE SHOWING A FEW
HUNDREDTHS OF AN INCH OVER MUCH OF MONTEREY AND SAN BENITO
COUNTIES AND AS FAR NORTH AS THE SANTA CRUZ MOUNTAINS AND SANTA
CLARA VALLEY. THESE AREAS HAVE THE BEST CHANCE FOR GETTING ANY
RAIN WHILE THE GREATER SFO BAY AREA HAVE ONLY A VERY SLIGHT
CHANCE. THE LOW WILL WEAKEN AND OPEN UP INTO A WAVE AS IT MOVES
INTO NEVADA TUESDAY AFTERNOON. BY THIS TIME THE MOISTURE WILL BE
EAST OF THE DISTRICT.

FROM PREVIOUS DISCUSSION...

AS THAT LOW MOVES TO OUR EAST THE SYNOPTIC PATTERN REMAINS FAIRLY
NONDESCRIPT WITH WEAK CYCLONIC FLOW ALOFT THAT MAY GENERATE SOME
SHOWERS OVER THE SIERRA BY THURSDAY BUT NO PRECIP FOR THE BAY
AREA. OUR TEMPERATURES WILL TREND SLIGHTLY ABOVE NORMAL WITH
AFTERNOON HIGHS IN THE 60S THROUGH THE WORK-WEEK.

ANOTHER WARM WEEKEND LOOKS TO BE IN STORE AS A RIDGE BUILDS
SATURDAY AND SUNDAY WITH 850 MB TEMPS TO AROUND 15 CELSIUS. DOESN`T
LOOK AS WARM AS LAST WEEKEND SO NOT EXPECTING ANY RECORDS.

THE PATTERN BEYOND SUNDAY BECOMES MORE MUDDLED. THE ECMWF AND GEM
MODEL ARE ACTUALLY TRENDING A LITTLE WETTER WHILE THE GFS REMAINS
DRY. GIVEN THE HISTORIC DRY PATTERN WERE UNDER WILL NOT BE
INTRODUCING DAY 7 POPS AT THIS TIME.

&&

.AVIATION...AS OF 9:50 PM PST MONDAY...MID AND HIGH LEVEL CLOUDS
WILL CONTINUE TO MOVE ACROSS THE REGION TONIGHT AND TUESDAY AS A
WEAK WEATHER SYSTEM SPINS OFF THE SOUTHERN CALIFORNIA COAST.
MAINLY VFR CONDITIONS ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN
FOG IN THE VALLEYS LATE TONIGHT AND EARLY TUESDAY. LIGHT AND
LOCALLY VARIABLE WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT AND VARIABLE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 09:55 PM PST MONDAY...A LOW PRESSURE OFFSHORE WILL
RESULT IN LIGHT SOUTHERLY WINDS ACROSS THE COASTAL WATERS. BY
MIDWEEK HIGH PRESSURE WILL BUILD OFF THE NORTHERN CALIFORNIA COAST
BRINGING LIGHT TO MODERATE NORTHWEST WINDS TO THE COASTAL WATERS
FOR THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: W PI/RWW
AVIATION/MARINE: CW

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 270446
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
846 PM PST MON JAN 26 2015

.SYNOPSIS...A WEAK STORM OVER SOUTHERN CALIFORNIA WILL SPREAD HIGH
CLOUDS OVER THE BAY AREA TONIGHT WITH A CHANCE OF SHOWERS FOR
SOUTHERN AND CENTRAL CALIFORNIA OVERNIGHT INTO TUESDAY MORNING.
THE SYSTEM WILL MOVE EASTWARD BY TUESDAY NIGHT WITH DRY AND MILD
WEATHER FORECAST WEDNESDAY THROUGH FRIDAY. A WARMING TREND IS
FORECAST OVER THE WEEKEND AS HIGH PRESSURE STRENGTHENS.

&&

.DISCUSSION...AS OF 8:45 PM PST MONDAY...UPPER LEVEL LOW OFF THE
SOUTHERN CALIFORNIA COAST HAS BROUGHT LIGHT RAIN TO THE LA AND SAN
DIEGO AREAS TODAY. THE LOW WILL MOVE NORTHEAST AND WEAKEN TONIGHT
BRINGING A CHANCE OF RAIN TO THE SOUTHERN PART OF THE CWA LATE
TONIGHT AND TUESDAY. SHORT RANGE MODELS ARE SHOWING A FEW
HUNDREDTHS OF AN INCH OVER MUCH OF MONTEREY AND SAN BENITO
COUNTIES AND AS FAR NORTH AS THE SANTA CRUZ MOUNTAINS AND SANTA
CLARA VALLEY. THESE AREAS HAVE THE BEST CHANCE FOR GETTING ANY
RAIN WHILE THE GREATER SFO BAY AREA HAVE ONLY A VERY SLIGHT
CHANCE. THE LOW WILL WEAKEN AND OPEN UP INTO A WAVE AS IT MOVES
INTO NEVADA TUESDAY AFTERNOON. BY THIS TIME THE MOISTURE WILL BE
EAST OF THE DISTRICT.

FROM PREVIOUS DISCUSSION...

AS THAT LOW MOVES TO OUR EAST THE SYNOPTIC PATTERN REMAINS FAIRLY
NONDESCRIPT WITH WEAK CYCLONIC FLOW ALOFT THAT MAY GENERATE SOME
SHOWERS OVER THE SIERRA BY THURSDAY BUT NO PRECIP FOR THE BAY
AREA. OUR TEMPERATURES WILL TREND SLIGHTLY ABOVE NORMAL WITH
AFTERNOON HIGHS IN THE 60S THROUGH THE WORK-WEEK.

ANOTHER WARM WEEKEND LOOKS TO BE IN STORE AS A RIDGE BUILDS
SATURDAY AND SUNDAY WITH 850 MB TEMPS TO AROUND 15 CELSIUS. DOESN`T
LOOK AS WARM AS LAST WEEKEND SO NOT EXPECTING ANY RECORDS.

THE PATTERN BEYOND SUNDAY BECOMES MORE MUDDLED. THE ECMWF AND GEM
MODEL ARE ACTUALLY TRENDING A LITTLE WETTER WHILE THE GFS REMAINS
DRY. GIVEN THE HISTORIC DRY PATTERN WERE UNDER WILL NOT BE
INTRODUCING DAY 7 POPS AT THIS TIME.

&&

.AVIATION...AS OF 4:00 PM PST MONDAY...A WEAK WEATHER SYSTEM
OFF THE SOUTHERN CALIFORNIA COAST WILL CONTINUE TO DRAW A BLANKET
OF MID AND HIGH LEVEL CLOUDS OVER THE AREA TONIGHT AND TUESDAY.
MOSTLY VFR CONDITIONS ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN
FOG IN THE VALLEYS LATE TONIGHT AND EARLY TUESDAY. LIGHT AND
LOCALLY VARIABLE WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT AND VARIABLE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 1:49 PM PST MONDAY...EAST WINDS OVER THE COASTAL
WATERS WILL TURN TO THE SOUTHEAST LATER TODAY AND TONIGHT AS WEAK
LOW PRESSURE DEVELOPS OFFSHORE. HIGH PRESSURE WILL BUILD OFF THE
NORTHERN CALIFORNIA COAST BY MIDWEEK...RESULTING IN LIGHT TO
MODERATE NORTHWEST WINDS DURING THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: W PI/RWW
AVIATION: CW
MARINE: DYKEMA

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 270446
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
846 PM PST MON JAN 26 2015

.SYNOPSIS...A WEAK STORM OVER SOUTHERN CALIFORNIA WILL SPREAD HIGH
CLOUDS OVER THE BAY AREA TONIGHT WITH A CHANCE OF SHOWERS FOR
SOUTHERN AND CENTRAL CALIFORNIA OVERNIGHT INTO TUESDAY MORNING.
THE SYSTEM WILL MOVE EASTWARD BY TUESDAY NIGHT WITH DRY AND MILD
WEATHER FORECAST WEDNESDAY THROUGH FRIDAY. A WARMING TREND IS
FORECAST OVER THE WEEKEND AS HIGH PRESSURE STRENGTHENS.

&&

.DISCUSSION...AS OF 8:45 PM PST MONDAY...UPPER LEVEL LOW OFF THE
SOUTHERN CALIFORNIA COAST HAS BROUGHT LIGHT RAIN TO THE LA AND SAN
DIEGO AREAS TODAY. THE LOW WILL MOVE NORTHEAST AND WEAKEN TONIGHT
BRINGING A CHANCE OF RAIN TO THE SOUTHERN PART OF THE CWA LATE
TONIGHT AND TUESDAY. SHORT RANGE MODELS ARE SHOWING A FEW
HUNDREDTHS OF AN INCH OVER MUCH OF MONTEREY AND SAN BENITO
COUNTIES AND AS FAR NORTH AS THE SANTA CRUZ MOUNTAINS AND SANTA
CLARA VALLEY. THESE AREAS HAVE THE BEST CHANCE FOR GETTING ANY
RAIN WHILE THE GREATER SFO BAY AREA HAVE ONLY A VERY SLIGHT
CHANCE. THE LOW WILL WEAKEN AND OPEN UP INTO A WAVE AS IT MOVES
INTO NEVADA TUESDAY AFTERNOON. BY THIS TIME THE MOISTURE WILL BE
EAST OF THE DISTRICT.

FROM PREVIOUS DISCUSSION...

AS THAT LOW MOVES TO OUR EAST THE SYNOPTIC PATTERN REMAINS FAIRLY
NONDESCRIPT WITH WEAK CYCLONIC FLOW ALOFT THAT MAY GENERATE SOME
SHOWERS OVER THE SIERRA BY THURSDAY BUT NO PRECIP FOR THE BAY
AREA. OUR TEMPERATURES WILL TREND SLIGHTLY ABOVE NORMAL WITH
AFTERNOON HIGHS IN THE 60S THROUGH THE WORK-WEEK.

ANOTHER WARM WEEKEND LOOKS TO BE IN STORE AS A RIDGE BUILDS
SATURDAY AND SUNDAY WITH 850 MB TEMPS TO AROUND 15 CELSIUS. DOESN`T
LOOK AS WARM AS LAST WEEKEND SO NOT EXPECTING ANY RECORDS.

THE PATTERN BEYOND SUNDAY BECOMES MORE MUDDLED. THE ECMWF AND GEM
MODEL ARE ACTUALLY TRENDING A LITTLE WETTER WHILE THE GFS REMAINS
DRY. GIVEN THE HISTORIC DRY PATTERN WERE UNDER WILL NOT BE
INTRODUCING DAY 7 POPS AT THIS TIME.

&&

.AVIATION...AS OF 4:00 PM PST MONDAY...A WEAK WEATHER SYSTEM
OFF THE SOUTHERN CALIFORNIA COAST WILL CONTINUE TO DRAW A BLANKET
OF MID AND HIGH LEVEL CLOUDS OVER THE AREA TONIGHT AND TUESDAY.
MOSTLY VFR CONDITIONS ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN
FOG IN THE VALLEYS LATE TONIGHT AND EARLY TUESDAY. LIGHT AND
LOCALLY VARIABLE WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT AND VARIABLE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 1:49 PM PST MONDAY...EAST WINDS OVER THE COASTAL
WATERS WILL TURN TO THE SOUTHEAST LATER TODAY AND TONIGHT AS WEAK
LOW PRESSURE DEVELOPS OFFSHORE. HIGH PRESSURE WILL BUILD OFF THE
NORTHERN CALIFORNIA COAST BY MIDWEEK...RESULTING IN LIGHT TO
MODERATE NORTHWEST WINDS DURING THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: W PI/RWW
AVIATION: CW
MARINE: DYKEMA

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 270018
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
418 PM PST MON JAN 26 2015

.SYNOPSIS...A WEAK STORM OVER SOUTHERN CALIFORNIA WILL SPREAD HIGH
CLOUDS OVER THE BAY AREA TONIGHT WITH A CHANCE OF SHOWERS FOR THE
CENTRAL COAST OVERNIGHT INTO TUESDAY MORNING. THE SYSTEM WILL MOVE
EASTWARD BY TUESDAY NIGHT WITH DRY AND MILD WEATHER FORECAST WEDNESDAY
THROUGH FRIDAY. A WARMING TREND IS FORECAST OVER THE WEEKEND AS
HIGH PRESSURE STRENGTHENS.

&&

.DISCUSSION...AS OF 2:19 PM PST MONDAY...TEMPERATURES IN THE BAY
AREA ARE TRENDING SLIGHTLY WARMER THIS AFTERNOON DUE TO LESS FOG
COVERAGE THIS MORNING. FARTHER SOUTH TEMPERATURES ALONG THE
CENTRAL COAST ARE MUCH COOLER AFTER YESTERDAYS RECORD WARMTH...AS
HIGH CLOUDS NOW BLANKET THE REGION IN ASSOCIATION WITH THE
CIRCULATION LOCATED WEST OF SAN DIEGO. RIGHT NOW SOME RAIN IS
FALLING IN THE DESERTS OF SOUTHERN CALIFORNIA WITH 29 PALMS AND
CHINA LAKE REPORTING LIGHT RAIN LAST HOUR. ITS AN UNUSUAL SET-UP
BUT ITS THE MOISTURE TO OUR SOUTH THAT WILL BE ADVECTED NORTHWARD
OVER THE NEXT 12-18 HOURS. LATEST MODELS CONTINUE TO KEEP BEST
CHANCES OF PRECIP EAST OF OUR DISTRICT BUT SOME OF THE MESO-SCALE
MODELS PAINT SOME SHOWERS OVER THE HILLS OF MONTEREY AND SAN
BENITO COUNTY AROUND SUNRISE TUESDAY AS THE SYSTEM BEGINS TO EJECT
INLAND. IN PARTICULAR THE LATEST RAP MODEL RUNS HAVE TRENDED
WETTER OVER MONTEREY/SAN BENITO COUNTY TUESDAY MORNING. HAVE LEFT
SHOWER CHANCES IN THE FORECAST TO ACCOUNT FOR THIS. ANY SHOWER
THREAT SHOULD END BY TUESDAY AFTERNOON AS THE MAIN UPPER LOW MOVES
EASTWARD.

AS THAT LOW MOVES TO OUR EAST THE SYNOPTIC PATTERN REMAINS FAIRLY
NONDESCRIPT WITH WEAK CYCLONIC FLOW ALOFT THAT MAY GENERATE SOME
SHOWERS OVER THE SIERRA BY THURSDAY BUT NO PRECIP FOR THE BAY
AREA. OUR TEMPERATURES WILL TREND SLIGHTLY ABOVE NORMAL WITH
AFTERNOON HIGHS IN THE 60S THROUGH THE WORK-WEEK.

ANOTHER WARM WEEKEND LOOKS TO BE IN STORE AS A RIDGE BUILDS
SATURDAY AND SUNDAY WITH 850 MB TEMPS TO AROUND 15 CELSIUS. DOESN`T
LOOK AS WARM AS LAST WEEKEND SO NOT EXPECTING ANY RECORDS.

THE PATTERN BEYOND SUNDAY BECOMES MORE MUDDLED. THE ECMWF AND GEM
MODEL ARE ACTUALLY TRENDING A LITTLE WETTER WHILE THE GFS REMAINS
DRY. GIVEN THE HISTORIC DRY PATTERN WERE UNDER WILL NOT BE
INTRODUCING DAY 7 POPS AT THIS TIME.

&&

.AVIATION...AS OF 4:00 PM PST MONDAY...A WEAK WEATHER SYSTEM
OFF THE SOUTHERN CALIFORNIA COAST WILL CONTINUE TO DRAW A BLANKET
OF MID AND HIGH LEVEL CLOUDS OVER THE AREA TONIGHT AND TUESDAY.
MOSTLY VFR CONDITIONS ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN
FOG IN THE VALLEYS LATE TONIGHT AND EARLY TUESDAY. LIGHT AND
LOCALLY VARIABLE WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT AND VARIABLE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 1:49 PM PST MONDAY...EAST WINDS OVER THE COASTAL
WATERS WILL TURN TO THE SOUTHEAST LATER TODAY AND TONIGHT AS WEAK
LOW PRESSURE DEVELOPS OFFSHORE. HIGH PRESSURE WILL BUILD OFF THE
NORTHERN CALIFORNIA COAST BY MIDWEEK...RESULTING IN LIGHT TO
MODERATE NORTHWEST WINDS DURING THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: RWW
AVIATION: CW
MARINE: DYKEMA

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 270018
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
418 PM PST MON JAN 26 2015

.SYNOPSIS...A WEAK STORM OVER SOUTHERN CALIFORNIA WILL SPREAD HIGH
CLOUDS OVER THE BAY AREA TONIGHT WITH A CHANCE OF SHOWERS FOR THE
CENTRAL COAST OVERNIGHT INTO TUESDAY MORNING. THE SYSTEM WILL MOVE
EASTWARD BY TUESDAY NIGHT WITH DRY AND MILD WEATHER FORECAST WEDNESDAY
THROUGH FRIDAY. A WARMING TREND IS FORECAST OVER THE WEEKEND AS
HIGH PRESSURE STRENGTHENS.

&&

.DISCUSSION...AS OF 2:19 PM PST MONDAY...TEMPERATURES IN THE BAY
AREA ARE TRENDING SLIGHTLY WARMER THIS AFTERNOON DUE TO LESS FOG
COVERAGE THIS MORNING. FARTHER SOUTH TEMPERATURES ALONG THE
CENTRAL COAST ARE MUCH COOLER AFTER YESTERDAYS RECORD WARMTH...AS
HIGH CLOUDS NOW BLANKET THE REGION IN ASSOCIATION WITH THE
CIRCULATION LOCATED WEST OF SAN DIEGO. RIGHT NOW SOME RAIN IS
FALLING IN THE DESERTS OF SOUTHERN CALIFORNIA WITH 29 PALMS AND
CHINA LAKE REPORTING LIGHT RAIN LAST HOUR. ITS AN UNUSUAL SET-UP
BUT ITS THE MOISTURE TO OUR SOUTH THAT WILL BE ADVECTED NORTHWARD
OVER THE NEXT 12-18 HOURS. LATEST MODELS CONTINUE TO KEEP BEST
CHANCES OF PRECIP EAST OF OUR DISTRICT BUT SOME OF THE MESO-SCALE
MODELS PAINT SOME SHOWERS OVER THE HILLS OF MONTEREY AND SAN
BENITO COUNTY AROUND SUNRISE TUESDAY AS THE SYSTEM BEGINS TO EJECT
INLAND. IN PARTICULAR THE LATEST RAP MODEL RUNS HAVE TRENDED
WETTER OVER MONTEREY/SAN BENITO COUNTY TUESDAY MORNING. HAVE LEFT
SHOWER CHANCES IN THE FORECAST TO ACCOUNT FOR THIS. ANY SHOWER
THREAT SHOULD END BY TUESDAY AFTERNOON AS THE MAIN UPPER LOW MOVES
EASTWARD.

AS THAT LOW MOVES TO OUR EAST THE SYNOPTIC PATTERN REMAINS FAIRLY
NONDESCRIPT WITH WEAK CYCLONIC FLOW ALOFT THAT MAY GENERATE SOME
SHOWERS OVER THE SIERRA BY THURSDAY BUT NO PRECIP FOR THE BAY
AREA. OUR TEMPERATURES WILL TREND SLIGHTLY ABOVE NORMAL WITH
AFTERNOON HIGHS IN THE 60S THROUGH THE WORK-WEEK.

ANOTHER WARM WEEKEND LOOKS TO BE IN STORE AS A RIDGE BUILDS
SATURDAY AND SUNDAY WITH 850 MB TEMPS TO AROUND 15 CELSIUS. DOESN`T
LOOK AS WARM AS LAST WEEKEND SO NOT EXPECTING ANY RECORDS.

THE PATTERN BEYOND SUNDAY BECOMES MORE MUDDLED. THE ECMWF AND GEM
MODEL ARE ACTUALLY TRENDING A LITTLE WETTER WHILE THE GFS REMAINS
DRY. GIVEN THE HISTORIC DRY PATTERN WERE UNDER WILL NOT BE
INTRODUCING DAY 7 POPS AT THIS TIME.

&&

.AVIATION...AS OF 4:00 PM PST MONDAY...A WEAK WEATHER SYSTEM
OFF THE SOUTHERN CALIFORNIA COAST WILL CONTINUE TO DRAW A BLANKET
OF MID AND HIGH LEVEL CLOUDS OVER THE AREA TONIGHT AND TUESDAY.
MOSTLY VFR CONDITIONS ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN
FOG IN THE VALLEYS LATE TONIGHT AND EARLY TUESDAY. LIGHT AND
LOCALLY VARIABLE WINDS WILL PREVAIL.

VICINITY OF KSFO...VFR. LIGHT AND VARIABLE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 1:49 PM PST MONDAY...EAST WINDS OVER THE COASTAL
WATERS WILL TURN TO THE SOUTHEAST LATER TODAY AND TONIGHT AS WEAK
LOW PRESSURE DEVELOPS OFFSHORE. HIGH PRESSURE WILL BUILD OFF THE
NORTHERN CALIFORNIA COAST BY MIDWEEK...RESULTING IN LIGHT TO
MODERATE NORTHWEST WINDS DURING THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: RWW
AVIATION: CW
MARINE: DYKEMA

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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000
FXUS66 KMTR 262219
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
219 PM PST MON JAN 26 2015

.SYNOPSIS...A WEAK STORM OVER SOUTHERN CALIFORNIA WILL SPREAD HIGH
CLOUDS OVER THE BAY AREA TONIGHT WITH A CHANCE OF SHOWERS FOR THE
CENTRAL COAST OVERNIGHT INTO TUESDAY MORNING. THE SYSTEM WILL MOVE
EASTWARD BY TUESDAY NIGHT WITH DRY AND MILD WEATHER FORECAST WEDNESDAY
THROUGH FRIDAY. A WARMING TREND IS FORECAST OVER THE WEEKEND AS
HIGH PRESSURE STRENGTHENS.

&&

.DISCUSSION...AS OF 2:19 PM PST MONDAY...TEMPERATURES IN THE BAY
AREA ARE TRENDING SLIGHTLY WARMER THIS AFTERNOON DUE TO LESS FOG
COVERAGE THIS MORNING. FARTHER SOUTH TEMPERATURES ALONG THE
CENTRAL COAST ARE MUCH COOLER AFTER YESTERDAYS RECORD WARMTH...AS
HIGH CLOUDS NOW BLANKET THE REGION IN ASSOCIATION WITH THE
CIRCULATION LOCATED WEST OF SAN DIEGO. RIGHT NOW SOME RAIN IS
FALLING IN THE DESERTS OF SOUTHERN CALIFORNIA WITH 29 PALMS AND
CHINA LAKE REPORTING LIGHT RAIN LAST HOUR. ITS AN UNUSUAL SET-UP
BUT ITS THE MOISTURE TO OUR SOUTH THAT WILL BE ADVECTED NORTHWARD
OVER THE NEXT 12-18 HOURS. LATEST MODELS CONTINUE TO KEEP BEST
CHANCES OF PRECIP EAST OF OUR DISTRICT BUT SOME OF THE MESO-SCALE
MODELS PAINT SOME SHOWERS OVER THE HILLS OF MONTEREY AND SAN
BENITO COUNTY AROUND SUNRISE TUESDAY AS THE SYSTEM BEGINS TO EJECT
INLAND. IN PARTICULAR THE LATEST RAP MODEL RUNS HAVE TRENDED
WETTER OVER MONTEREY/SAN BENITO COUNTY TUESDAY MORNING. HAVE LEFT
SHOWER CHANCES IN THE FORECAST TO ACCOUNT FOR THIS. ANY SHOWER
THREAT SHOULD END BY TUESDAY AFTERNOON AS THE MAIN UPPER LOW MOVES
EASTWARD.

AS THAT LOW MOVES TO OUR EAST THE SYNOPTIC PATTERN REMAINS FAIRLY
NONDESCRIPT WITH WEAK CYCLONIC FLOW ALOFT THAT MAY GENERATE SOME
SHOWERS OVER THE SIERRA BY THURSDAY BUT NO PRECIP FOR THE BAY
AREA. OUR TEMPERATURES WILL TREND SLIGHTLY ABOVE NORMAL WITH
AFTERNOON HIGHS IN THE 60S THROUGH THE WORK-WEEK.

ANOTHER WARM WEEKEND LOOKS TO BE IN STORE AS A RIDGE BUILDS
SATURDAY AND SUNDAY WITH 850 MB TEMPS TO AROUND 15 CELSIUS. DOESN`T
LOOK AS WARM AS LAST WEEKEND SO NOT EXPECTING ANY RECORDS.

THE PATTERN BEYOND SUNDAY BECOMES MORE MUDDLED. THE ECMWF AND GEM
MODEL ARE ACTUALLY TRENDING A LITTLE WETTER WHILE THE GFS REMAINS
DRY. GIVEN THE HISTORIC DRY PATTERN WERE UNDER WILL NOT BE
INTRODUCING DAY 7 POPS AT THIS TIME.

&&

.AVIATION...AS OF 9:50 AM PST MONDAY...PATCHY FOG IN THE VALLEYS
WILL CLEAR BY LATE MORNING. A WEAK WEATHER SYSTEM MOVING INTO
SOUTHERN CALIFORNIA WILL SPREAD CONSIDERABLE MID AND HIGH LEVEL
CLOUDS ACROSS THE REGION THROUGH TUESDAY. MOSTLY VFR CONDITIONS
ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN FOG IN THE VALLEYS
LATE MONDAY NIGHT AND EARLY TUESDAY. WINDS WILL BE LIGHT
EASTERLY...TRANSITIONING TO LIGHT WESTERLY THIS AFTERNOON AND
LIGHT SOUTHERLY TONIGHT.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS WINDS THIS MORNING
BECOMING LIGHT VARIABLE THIS AFTERNOON.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 1:49 PM PST MONDAY...EAST WINDS OVER THE COASTAL
WATERS WILL TURN TO THE SOUTHEAST LATER TODAY AND TONIGHT AS WEAK
LOW PRESSURE DEVELOPS OFFSHORE. HIGH PRESSURE WILL BUILD OFF THE
NORTHERN CALIFORNIA COAST BY MIDWEEK...RESULTING IN LIGHT TO
MODERATE NORTHWEST WINDS DURING THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: RWW
AVIATION/MARINE: DYKEMA

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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000
FXUS66 KMTR 261751
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
951 AM PST MON JAN 26 2015

.SYNOPSIS...TEMPERATURES COOL SLIGHTLY FOR THE START OF THE WORK
WEEK AS HIGH PRESSURE OVER CALIFORNIA WEAKENS AND SHIFTS EASTWARD.
A WEAK STORM SYSTEM WILL THEN MOVE INTO SOUTHERN CALIFORNIA
TONIGHT INTO TUESDAY...BRINGING A SLIGHT CHANCE OF SHOWERS TO
THE CENTRAL COAST WHILE THE BAY AREA STAYS DRY. DRY AND SEASONABLE
WEATHER FORECAST WEDNESDAY THROUGH FRIDAY WITH A WARMING TREND
THIS WEEKEND.

&&

.DISCUSSION...AS OF 9:16 AM PST MONDAY...MID AND HIGH CLOUDS ARE
INCREASING ACROSS THE REGION AS MOISTURE FROM SOUTHERN CALIFORNIA
CONTINUES TO SLOWLY INCREASE. IN TERMS OF FOG THE LIVERMORE
AIRPORT IS STILL REPORTING SOME DENSE FOG THAT SHOULD ERODE
SHORTLY. AFTER MILD TO WARM WEATHER OVER THE WEEKEND THE
COMBINATION OF INCREASING CLOUDS AND SOME AIRMASS COOLING WILL
ULTIMATELY LEAD TO A SUBTLE COOLING TREND FOR THE START OF THE
WORK WEEK. THE MAIN WEATHER FEATURE OF INTEREST CONTINUES TO BE A
CIRCULATION OFF THE SOUTHERN CALIFORNIA COAST. 12Z DATA SPREADS
SOME SHOWERS NORTHWARD LATER THIS EVENING INTO TUESDAY MORNING.
MOST OF THE PRECIP WILL STAY SOUTH AND EAST OF OUR DISTRICT. THE
BEST CHANCE FOR SHOWERS LOOKS TO BE OVER MONTEREY AND SAN BENITO
COUNTIES EARLY TUESDAY MORNING. CURRENT POP FORECAST HAS THIS
COVERED FAIRLY WELL AND WILL ONLY PLAN ON MINOR ADJUSTMENTS FOR
THE AFTERNOON PACKAGE.

THE PATTERN STAYS BENIGN THIS WEEK WITH ZONAL FLOW OR SOME WEAK
TROUGHING. THIS WILL KEEP SKIES PARTLY TO MOSTLY CLOUDY WITH
MORNING FOG IN THE VALLEYS CLOSER TO THE DELTA. TEMPERATURES WILL
RUN NEAR NORMAL WITH FAIRLY MILD DAYS AND NIGHTS.

ANOTHER WARM WEEKEND IS LOOKING LIKELY AS THE ECMWF BUILDS A
STRONG RIDGE OVER THE BAY AREA AGAIN SATURDAY AND
SUNDAY...ALTHOUGH RECORD WARMTH LOOKS LESS LIKELY FOR THE CENTRAL
COAST AT THIS TIME. THAT RIDGE WILL BREAK DOWN BY NEXT MONDAY AS
THE CALENDAR TURNS TO FEBRUARY. THE WAITING GAME WILL THEN
CONTINUE AS WE LOOK FOR SOME TYPE OF A PATTERN CHANGE. THE GFS
CONTINUES TO PLAY ITS SAME GAME OF HINTING AT RAIN OF SUBSTANCE
ABOUT 2 WEEKS FROM NOW.

&&

.PREV DISCUSSION...AS OF 3:46 AM PST MONDAY...THE CENTER OF THE
MID/UPPER LEVEL HIGH THAT RESULTED IN RECORD BREAKING TEMPERATURES
ACROSS PORTIONS OF THE REGION THIS WEEKEND WILL CONTINUE TO SHIFT
FURTHER INLAND TODAY. MEANWHILE...AN UPPER LEVEL LOW PRESSURE
SYSTEM CURRENTLY SOUTHWEST OF THE SOUTHERN CALIFORNIA COAST WILL
SHIFT NORTHWARD DURING THE NEXT 12 TO 36 HOURS. THIS FEATURE HAS
ALREADY BROUGHT AN INCREASE IN MID/HIGH LEVEL CLOUDS OVER THE
REGION THIS MORNING WITH DEEPER MOISTURE FORECAST TO ADVECT
NORTHWARD THROUGH TUESDAY. THE LATEST FORECAST GUIDANCE CONTINUES
TO SHOW LIGHT PRECIPITATION SPREADING ACROSS MONTEREY AND SAN
BENITO COUNTIES LATE TONIGHT AND MAY REACH AS FAR NORTH AS THE
SANTA CLARA VALLEY/EAST BAY BY TUESDAY MORNING. IT STILL APPEARS
RAINFALL AMOUNTS WILL REMAIN LIGHT AS THE LOW BEGINS TO TRANSITION
INTO AN OPEN WAVE AND BECOMES SHEARED APART WHILE APPROACHING THE
CENTRAL COAST ON TUESDAY. MOST AREAS THAT DO RECEIVE RAINFALL WILL
LIKELY ONLY PICK UP A FEW HUNDREDTHS TO ONE- TENTH OF AN INCH.
HOWEVER...CANNOT RULE OUT RAINFALL AMOUNTS UP TO ONE-QUARTER OF AN
INCH WITHIN HEAVIER SHOWERS THAT MAY DEVELOP OVER THE HIGHER
ELEVATIONS. A FEW SHOWERS MAY LINGER INTO TUESDAY AFTERNOON BEFORE
THE MID/UPPER LEVEL SUPPORT AND ASSOCIATED MOISTURE SHIFT INLAND.

ANOTHER MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE SYSTEM
IS FORECAST TO FOLLOW BEHIND THE AFOREMENTIONED SYSTEM AND
APPROACH SOUTHERN CALIFORNIA BY MIDWEEK. UNFORTUNATELY...THE
MODEL GENERALLY AGREE THIS SYSTEM WILL BE TOO WEAK AND
DISORGANIZED TO BRING PRECIPITATION TO OUR REGION. THUS...WILL
MAINTAIN DRY WEATHER CONDITIONS BEYOND TUESDAY WITH LINGERING
MID/HIGH LEVEL CLOUDS STREAMING ACROSS CENTRAL CALIFORNIA. GIVEN
ONLY SLIGHT COOLING ALOFT FROM THESE TWO SYSTEMS...TEMPERATURES
ACROSS THE REGION WILL LIKELY REMAIN ABOVE SEASONAL AVERAGES
THROUGH THE WORK WEEK.

THE UPPER LEVEL RIDGE OFF OF THE WEST COAST IS THEN FORECAST TO
NOSE INTO NORTHERN AND CENTRAL CALIFORNIA LATE IN THE WEEK. THIS
WILL MAINTAIN DRY WEATHER CONDITIONS AND RESULT IN ANOTHER
WARMING TREND ACROSS THE FORECAST AREA THROUGH THE UPCOMING
WEEKEND. WITH THIS...JANUARY 2015 WILL LIKELY GO DOWN IN THE
RECORD BOOKS AS THE DRIEST ON RECORD FOR MANY (IF NOT MOST) SITES
ACROSS THE SAN FRANCISCO/MONTEREY BAY AREA.

&&

.AVIATION...AS OF 9:50 AM PST MONDAY...PATCHY FOG IN THE VALLEYS
WILL CLEAR BY LATE MORNING. A WEAK WEATHER SYSTEM MOVING INTO
SOUTHERN CALIFORNIA WILL SPREAD CONSIDERABLE MID AND HIGH LEVEL
CLOUDS ACROSS THE REGION THROUGH TUESDAY. MOSTLY VFR CONDITIONS
ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN FOG IN THE VALLEYS
LATE MONDAY NIGHT AND EARLY TUESDAY. WINDS WILL BE LIGHT
EASTERLY...TRANSITIONING TO LIGHT WESTERLY THIS AFTERNOON AND
LIGHT SOUTHERLY TONIGHT.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS WINDS THIS MORNING
BECOMING LIGHT VARIABLE THIS AFTERNOON.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 9:00 AM PST MONDAY...EAST WINDS OVER THE COASTAL
WATERS WILL TURN TO THE SOUTHEAST LATER TODAY AND TONIGHT AS WEAK
LOW PRESSURE DEVELOPS OFFSHORE. HIGH PRESSURE WILL BUILD OFF THE
NORTHERN CALIFORNIA COAST BY MIDWEEK...RESULTING IN LIGHT TO
MODERATE NORTHWEST WINDS DURING THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RWW
AVIATION/MARINE: DYKEMA

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA







000
FXUS66 KMTR 261751
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
951 AM PST MON JAN 26 2015

.SYNOPSIS...TEMPERATURES COOL SLIGHTLY FOR THE START OF THE WORK
WEEK AS HIGH PRESSURE OVER CALIFORNIA WEAKENS AND SHIFTS EASTWARD.
A WEAK STORM SYSTEM WILL THEN MOVE INTO SOUTHERN CALIFORNIA
TONIGHT INTO TUESDAY...BRINGING A SLIGHT CHANCE OF SHOWERS TO
THE CENTRAL COAST WHILE THE BAY AREA STAYS DRY. DRY AND SEASONABLE
WEATHER FORECAST WEDNESDAY THROUGH FRIDAY WITH A WARMING TREND
THIS WEEKEND.

&&

.DISCUSSION...AS OF 9:16 AM PST MONDAY...MID AND HIGH CLOUDS ARE
INCREASING ACROSS THE REGION AS MOISTURE FROM SOUTHERN CALIFORNIA
CONTINUES TO SLOWLY INCREASE. IN TERMS OF FOG THE LIVERMORE
AIRPORT IS STILL REPORTING SOME DENSE FOG THAT SHOULD ERODE
SHORTLY. AFTER MILD TO WARM WEATHER OVER THE WEEKEND THE
COMBINATION OF INCREASING CLOUDS AND SOME AIRMASS COOLING WILL
ULTIMATELY LEAD TO A SUBTLE COOLING TREND FOR THE START OF THE
WORK WEEK. THE MAIN WEATHER FEATURE OF INTEREST CONTINUES TO BE A
CIRCULATION OFF THE SOUTHERN CALIFORNIA COAST. 12Z DATA SPREADS
SOME SHOWERS NORTHWARD LATER THIS EVENING INTO TUESDAY MORNING.
MOST OF THE PRECIP WILL STAY SOUTH AND EAST OF OUR DISTRICT. THE
BEST CHANCE FOR SHOWERS LOOKS TO BE OVER MONTEREY AND SAN BENITO
COUNTIES EARLY TUESDAY MORNING. CURRENT POP FORECAST HAS THIS
COVERED FAIRLY WELL AND WILL ONLY PLAN ON MINOR ADJUSTMENTS FOR
THE AFTERNOON PACKAGE.

THE PATTERN STAYS BENIGN THIS WEEK WITH ZONAL FLOW OR SOME WEAK
TROUGHING. THIS WILL KEEP SKIES PARTLY TO MOSTLY CLOUDY WITH
MORNING FOG IN THE VALLEYS CLOSER TO THE DELTA. TEMPERATURES WILL
RUN NEAR NORMAL WITH FAIRLY MILD DAYS AND NIGHTS.

ANOTHER WARM WEEKEND IS LOOKING LIKELY AS THE ECMWF BUILDS A
STRONG RIDGE OVER THE BAY AREA AGAIN SATURDAY AND
SUNDAY...ALTHOUGH RECORD WARMTH LOOKS LESS LIKELY FOR THE CENTRAL
COAST AT THIS TIME. THAT RIDGE WILL BREAK DOWN BY NEXT MONDAY AS
THE CALENDAR TURNS TO FEBRUARY. THE WAITING GAME WILL THEN
CONTINUE AS WE LOOK FOR SOME TYPE OF A PATTERN CHANGE. THE GFS
CONTINUES TO PLAY ITS SAME GAME OF HINTING AT RAIN OF SUBSTANCE
ABOUT 2 WEEKS FROM NOW.

&&

.PREV DISCUSSION...AS OF 3:46 AM PST MONDAY...THE CENTER OF THE
MID/UPPER LEVEL HIGH THAT RESULTED IN RECORD BREAKING TEMPERATURES
ACROSS PORTIONS OF THE REGION THIS WEEKEND WILL CONTINUE TO SHIFT
FURTHER INLAND TODAY. MEANWHILE...AN UPPER LEVEL LOW PRESSURE
SYSTEM CURRENTLY SOUTHWEST OF THE SOUTHERN CALIFORNIA COAST WILL
SHIFT NORTHWARD DURING THE NEXT 12 TO 36 HOURS. THIS FEATURE HAS
ALREADY BROUGHT AN INCREASE IN MID/HIGH LEVEL CLOUDS OVER THE
REGION THIS MORNING WITH DEEPER MOISTURE FORECAST TO ADVECT
NORTHWARD THROUGH TUESDAY. THE LATEST FORECAST GUIDANCE CONTINUES
TO SHOW LIGHT PRECIPITATION SPREADING ACROSS MONTEREY AND SAN
BENITO COUNTIES LATE TONIGHT AND MAY REACH AS FAR NORTH AS THE
SANTA CLARA VALLEY/EAST BAY BY TUESDAY MORNING. IT STILL APPEARS
RAINFALL AMOUNTS WILL REMAIN LIGHT AS THE LOW BEGINS TO TRANSITION
INTO AN OPEN WAVE AND BECOMES SHEARED APART WHILE APPROACHING THE
CENTRAL COAST ON TUESDAY. MOST AREAS THAT DO RECEIVE RAINFALL WILL
LIKELY ONLY PICK UP A FEW HUNDREDTHS TO ONE- TENTH OF AN INCH.
HOWEVER...CANNOT RULE OUT RAINFALL AMOUNTS UP TO ONE-QUARTER OF AN
INCH WITHIN HEAVIER SHOWERS THAT MAY DEVELOP OVER THE HIGHER
ELEVATIONS. A FEW SHOWERS MAY LINGER INTO TUESDAY AFTERNOON BEFORE
THE MID/UPPER LEVEL SUPPORT AND ASSOCIATED MOISTURE SHIFT INLAND.

ANOTHER MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE SYSTEM
IS FORECAST TO FOLLOW BEHIND THE AFOREMENTIONED SYSTEM AND
APPROACH SOUTHERN CALIFORNIA BY MIDWEEK. UNFORTUNATELY...THE
MODEL GENERALLY AGREE THIS SYSTEM WILL BE TOO WEAK AND
DISORGANIZED TO BRING PRECIPITATION TO OUR REGION. THUS...WILL
MAINTAIN DRY WEATHER CONDITIONS BEYOND TUESDAY WITH LINGERING
MID/HIGH LEVEL CLOUDS STREAMING ACROSS CENTRAL CALIFORNIA. GIVEN
ONLY SLIGHT COOLING ALOFT FROM THESE TWO SYSTEMS...TEMPERATURES
ACROSS THE REGION WILL LIKELY REMAIN ABOVE SEASONAL AVERAGES
THROUGH THE WORK WEEK.

THE UPPER LEVEL RIDGE OFF OF THE WEST COAST IS THEN FORECAST TO
NOSE INTO NORTHERN AND CENTRAL CALIFORNIA LATE IN THE WEEK. THIS
WILL MAINTAIN DRY WEATHER CONDITIONS AND RESULT IN ANOTHER
WARMING TREND ACROSS THE FORECAST AREA THROUGH THE UPCOMING
WEEKEND. WITH THIS...JANUARY 2015 WILL LIKELY GO DOWN IN THE
RECORD BOOKS AS THE DRIEST ON RECORD FOR MANY (IF NOT MOST) SITES
ACROSS THE SAN FRANCISCO/MONTEREY BAY AREA.

&&

.AVIATION...AS OF 9:50 AM PST MONDAY...PATCHY FOG IN THE VALLEYS
WILL CLEAR BY LATE MORNING. A WEAK WEATHER SYSTEM MOVING INTO
SOUTHERN CALIFORNIA WILL SPREAD CONSIDERABLE MID AND HIGH LEVEL
CLOUDS ACROSS THE REGION THROUGH TUESDAY. MOSTLY VFR CONDITIONS
ARE EXPECTED EXCEPT LOCAL IFR CONDITIONS IN FOG IN THE VALLEYS
LATE MONDAY NIGHT AND EARLY TUESDAY. WINDS WILL BE LIGHT
EASTERLY...TRANSITIONING TO LIGHT WESTERLY THIS AFTERNOON AND
LIGHT SOUTHERLY TONIGHT.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS WINDS THIS MORNING
BECOMING LIGHT VARIABLE THIS AFTERNOON.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT WINDS.

&&

.MARINE...AS OF 9:00 AM PST MONDAY...EAST WINDS OVER THE COASTAL
WATERS WILL TURN TO THE SOUTHEAST LATER TODAY AND TONIGHT AS WEAK
LOW PRESSURE DEVELOPS OFFSHORE. HIGH PRESSURE WILL BUILD OFF THE
NORTHERN CALIFORNIA COAST BY MIDWEEK...RESULTING IN LIGHT TO
MODERATE NORTHWEST WINDS DURING THE SECOND HALF OF THE WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RWW
AVIATION/MARINE: DYKEMA

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA






000
FXUS66 KMTR 261716
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
916 AM PST MON JAN 26 2015

.SYNOPSIS...TEMPERATURES COOL SLIGHTLY FOR THE START OF THE WORK
WEEK AS HIGH PRESSURE OVER CALIFORNIA WEAKENS AND SHIFTS EASTWARD.
A WEAK STORM SYSTEM WILL THEN MOVE INTO SOUTHERN CALIFORNIA
TONIGHT INTO TUESDAY...BRINGING A SLIGHT CHANCE OF SHOWERS TO
THE CENTRAL COAST WHILE THE BAY AREA STAYS DRY. DRY AND SEASONABLE
WEATHER FORECAST WEDNESDAY THROUGH FRIDAY WITH A WARMING TREND
THIS WEEKEND.

&&

.DISCUSSION...AS OF 9:16 AM PST MONDAY...MID AND HIGH CLOUDS ARE
INCREASING ACROSS THE REGION AS MOISTURE FROM SOUTHERN CALIFORNIA
CONTINUES TO SLOWLY INCREASE. IN TERMS OF FOG THE LIVERMORE
AIRPORT IS STILL REPORTING SOME DENSE FOG THAT SHOULD ERODE
SHORTLY. AFTER MILD TO WARM WEATHER OVER THE WEEKEND THE
COMBINATION OF INCREASING CLOUDS AND SOME AIRMASS COOLING WILL
ULTIMATELY LEAD TO A SUBTLE COOLING TREND FOR THE START OF THE
WORK WEEK. THE MAIN WEATHER FEATURE OF INTEREST CONTINUES TO BE A
CIRCULATION OFF THE SOUTHERN CALIFORNIA COAST. 12Z DATA SPREADS
SOME SHOWERS NORTHWARD LATER THIS EVENING INTO TUESDAY MORNING.
MOST OF THE PRECIP WILL STAY SOUTH AND EAST OF OUR DISTRICT. THE
BEST CHANCE FOR SHOWERS LOOKS TO BE OVER MONTEREY AND SAN BENITO
COUNTIES EARLY TUESDAY MORNING. CURRENT POP FORECAST HAS THIS
COVERED FAIRLY WELL AND WILL ONLY PLAN ON MINOR ADJUSTMENTS FOR
THE AFTERNOON PACKAGE.

THE PATTERN STAYS BENIGN THIS WEEK WITH ZONAL FLOW OR SOME WEAK
TROUGHING. THIS WILL KEEP SKIES PARTLY TO MOSTLY CLOUDY WITH
MORNING FOG IN THE VALLEYS CLOSER TO THE DELTA. TEMPERATURES WILL
RUN NEAR NORMAL WITH FAIRLY MILD DAYS AND NIGHTS.

ANOTHER WARM WEEKEND IS LOOKING LIKELY AS THE ECMWF BUILDS A
STRONG RIDGE OVER THE BAY AREA AGAIN SATURDAY AND
SUNDAY...ALTHOUGH RECORD WARMTH LOOKS LESS LIKELY FOR THE CENTRAL
COAST AT THIS TIME. THAT RIDGE WILL BREAK DOWN BY NEXT MONDAY AS
THE CALENDAR TURNS TO FEBRUARY. THE WAITING GAME WILL THEN
CONTINUE AS WE LOOK FOR SOME TYPE OF A PATTERN CHANGE. THE GFS
CONTINUES TO PLAY ITS SAME GAME OF HINTING AT RAIN OF SUBSTANCE
ABOUT 2 WEEKS FROM NOW.

&&

.PREV DISCUSSION...AS OF 3:46 AM PST MONDAY...THE CENTER OF THE
MID/UPPER LEVEL HIGH THAT RESULTED IN RECORD BREAKING TEMPERATURES
ACROSS PORTIONS OF THE REGION THIS WEEKEND WILL CONTINUE TO SHIFT
FURTHER INLAND TODAY. MEANWHILE...AN UPPER LEVEL LOW PRESSURE
SYSTEM CURRENTLY SOUTHWEST OF THE SOUTHERN CALIFORNIA COAST WILL
SHIFT NORTHWARD DURING THE NEXT 12 TO 36 HOURS. THIS FEATURE HAS
ALREADY BROUGHT AN INCREASE IN MID/HIGH LEVEL CLOUDS OVER THE
REGION THIS MORNING WITH DEEPER MOISTURE FORECAST TO ADVECT
NORTHWARD THROUGH TUESDAY. THE LATEST FORECAST GUIDANCE CONTINUES
TO SHOW LIGHT PRECIPITATION SPREADING ACROSS MONTEREY AND SAN
BENITO COUNTIES LATE TONIGHT AND MAY REACH AS FAR NORTH AS THE
SANTA CLARA VALLEY/EAST BAY BY TUESDAY MORNING. IT STILL APPEARS
RAINFALL AMOUNTS WILL REMAIN LIGHT AS THE LOW BEGINS TO TRANSITION
INTO AN OPEN WAVE AND BECOMES SHEARED APART WHILE APPROACHING THE
CENTRAL COAST ON TUESDAY. MOST AREAS THAT DO RECEIVE RAINFALL WILL
LIKELY ONLY PICK UP A FEW HUNDREDTHS TO ONE- TENTH OF AN INCH.
HOWEVER...CANNOT RULE OUT RAINFALL AMOUNTS UP TO ONE-QUARTER OF AN
INCH WITHIN HEAVIER SHOWERS THAT MAY DEVELOP OVER THE HIGHER
ELEVATIONS. A FEW SHOWERS MAY LINGER INTO TUESDAY AFTERNOON BEFORE
THE MID/UPPER LEVEL SUPPORT AND ASSOCIATED MOISTURE SHIFT INLAND.

ANOTHER MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE SYSTEM
IS FORECAST TO FOLLOW BEHIND THE AFOREMENTIONED SYSTEM AND
APPROACH SOUTHERN CALIFORNIA BY MIDWEEK. UNFORTUNATELY...THE
MODEL GENERALLY AGREE THIS SYSTEM WILL BE TOO WEAK AND
DISORGANIZED TO BRING PRECIPITATION TO OUR REGION. THUS...WILL
MAINTAIN DRY WEATHER CONDITIONS BEYOND TUESDAY WITH LINGERING
MID/HIGH LEVEL CLOUDS STREAMING ACROSS CENTRAL CALIFORNIA. GIVEN
ONLY SLIGHT COOLING ALOFT FROM THESE TWO SYSTEMS...TEMPERATURES
ACROSS THE REGION WILL LIKELY REMAIN ABOVE SEASONAL AVERAGES
THROUGH THE WORK WEEK.

THE UPPER LEVEL RIDGE OFF OF THE WEST COAST IS THEN FORECAST TO
NOSE INTO NORTHERN AND CENTRAL CALIFORNIA LATE IN THE WEEK. THIS
WILL MAINTAIN DRY WEATHER CONDITIONS AND RESULT IN ANOTHER
WARMING TREND ACROSS THE FORECAST AREA THROUGH THE UPCOMING
WEEKEND. WITH THIS...JANUARY 2015 WILL LIKELY GO DOWN IN THE
RECORD BOOKS AS THE DRIEST ON RECORD FOR MANY (IF NOT MOST) SITES
ACROSS THE SAN FRANCISCO/MONTEREY BAY AREA.

&&

.AVIATION...AS OF 4:00 AM PST MONDAY...OFFSHORE WINDS ARE HOLDING
ON BUT WILL WEAKEN BEGINNING THIS AFTERNOON AS A WEAKENING UPPER
LEVEL LOW APPROACHES THE AREA TONIGHT AND TUESDAY. KSTS REPORTS
VISIBILITY REDUCED TO IFR IN FOG OTHERWISE AREA TERMINALS REPORT
VFR.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.MARINE...AS OF 03:46 AM PST MONDAY...HIGH PRESSURE OVER THE GREAT
BASIN WILL MOVE SOUTH AND WEAKEN. WINDS WILL SWITCH TO A SOUTHEAST
DIRECTION THROUGH TUESDAY. HIGH PRESSURE WILL BUILD OFF THE
PACIFIC NORTHWEST WEDNESDAY AND THURSDAY FOR A RETURN TO NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RWW
AVIATION: CANEPA
MARINE: W PI/CANEPA

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA






000
FXUS66 KMTR 261716
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
916 AM PST MON JAN 26 2015

.SYNOPSIS...TEMPERATURES COOL SLIGHTLY FOR THE START OF THE WORK
WEEK AS HIGH PRESSURE OVER CALIFORNIA WEAKENS AND SHIFTS EASTWARD.
A WEAK STORM SYSTEM WILL THEN MOVE INTO SOUTHERN CALIFORNIA
TONIGHT INTO TUESDAY...BRINGING A SLIGHT CHANCE OF SHOWERS TO
THE CENTRAL COAST WHILE THE BAY AREA STAYS DRY. DRY AND SEASONABLE
WEATHER FORECAST WEDNESDAY THROUGH FRIDAY WITH A WARMING TREND
THIS WEEKEND.

&&

.DISCUSSION...AS OF 9:16 AM PST MONDAY...MID AND HIGH CLOUDS ARE
INCREASING ACROSS THE REGION AS MOISTURE FROM SOUTHERN CALIFORNIA
CONTINUES TO SLOWLY INCREASE. IN TERMS OF FOG THE LIVERMORE
AIRPORT IS STILL REPORTING SOME DENSE FOG THAT SHOULD ERODE
SHORTLY. AFTER MILD TO WARM WEATHER OVER THE WEEKEND THE
COMBINATION OF INCREASING CLOUDS AND SOME AIRMASS COOLING WILL
ULTIMATELY LEAD TO A SUBTLE COOLING TREND FOR THE START OF THE
WORK WEEK. THE MAIN WEATHER FEATURE OF INTEREST CONTINUES TO BE A
CIRCULATION OFF THE SOUTHERN CALIFORNIA COAST. 12Z DATA SPREADS
SOME SHOWERS NORTHWARD LATER THIS EVENING INTO TUESDAY MORNING.
MOST OF THE PRECIP WILL STAY SOUTH AND EAST OF OUR DISTRICT. THE
BEST CHANCE FOR SHOWERS LOOKS TO BE OVER MONTEREY AND SAN BENITO
COUNTIES EARLY TUESDAY MORNING. CURRENT POP FORECAST HAS THIS
COVERED FAIRLY WELL AND WILL ONLY PLAN ON MINOR ADJUSTMENTS FOR
THE AFTERNOON PACKAGE.

THE PATTERN STAYS BENIGN THIS WEEK WITH ZONAL FLOW OR SOME WEAK
TROUGHING. THIS WILL KEEP SKIES PARTLY TO MOSTLY CLOUDY WITH
MORNING FOG IN THE VALLEYS CLOSER TO THE DELTA. TEMPERATURES WILL
RUN NEAR NORMAL WITH FAIRLY MILD DAYS AND NIGHTS.

ANOTHER WARM WEEKEND IS LOOKING LIKELY AS THE ECMWF BUILDS A
STRONG RIDGE OVER THE BAY AREA AGAIN SATURDAY AND
SUNDAY...ALTHOUGH RECORD WARMTH LOOKS LESS LIKELY FOR THE CENTRAL
COAST AT THIS TIME. THAT RIDGE WILL BREAK DOWN BY NEXT MONDAY AS
THE CALENDAR TURNS TO FEBRUARY. THE WAITING GAME WILL THEN
CONTINUE AS WE LOOK FOR SOME TYPE OF A PATTERN CHANGE. THE GFS
CONTINUES TO PLAY ITS SAME GAME OF HINTING AT RAIN OF SUBSTANCE
ABOUT 2 WEEKS FROM NOW.

&&

.PREV DISCUSSION...AS OF 3:46 AM PST MONDAY...THE CENTER OF THE
MID/UPPER LEVEL HIGH THAT RESULTED IN RECORD BREAKING TEMPERATURES
ACROSS PORTIONS OF THE REGION THIS WEEKEND WILL CONTINUE TO SHIFT
FURTHER INLAND TODAY. MEANWHILE...AN UPPER LEVEL LOW PRESSURE
SYSTEM CURRENTLY SOUTHWEST OF THE SOUTHERN CALIFORNIA COAST WILL
SHIFT NORTHWARD DURING THE NEXT 12 TO 36 HOURS. THIS FEATURE HAS
ALREADY BROUGHT AN INCREASE IN MID/HIGH LEVEL CLOUDS OVER THE
REGION THIS MORNING WITH DEEPER MOISTURE FORECAST TO ADVECT
NORTHWARD THROUGH TUESDAY. THE LATEST FORECAST GUIDANCE CONTINUES
TO SHOW LIGHT PRECIPITATION SPREADING ACROSS MONTEREY AND SAN
BENITO COUNTIES LATE TONIGHT AND MAY REACH AS FAR NORTH AS THE
SANTA CLARA VALLEY/EAST BAY BY TUESDAY MORNING. IT STILL APPEARS
RAINFALL AMOUNTS WILL REMAIN LIGHT AS THE LOW BEGINS TO TRANSITION
INTO AN OPEN WAVE AND BECOMES SHEARED APART WHILE APPROACHING THE
CENTRAL COAST ON TUESDAY. MOST AREAS THAT DO RECEIVE RAINFALL WILL
LIKELY ONLY PICK UP A FEW HUNDREDTHS TO ONE- TENTH OF AN INCH.
HOWEVER...CANNOT RULE OUT RAINFALL AMOUNTS UP TO ONE-QUARTER OF AN
INCH WITHIN HEAVIER SHOWERS THAT MAY DEVELOP OVER THE HIGHER
ELEVATIONS. A FEW SHOWERS MAY LINGER INTO TUESDAY AFTERNOON BEFORE
THE MID/UPPER LEVEL SUPPORT AND ASSOCIATED MOISTURE SHIFT INLAND.

ANOTHER MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE SYSTEM
IS FORECAST TO FOLLOW BEHIND THE AFOREMENTIONED SYSTEM AND
APPROACH SOUTHERN CALIFORNIA BY MIDWEEK. UNFORTUNATELY...THE
MODEL GENERALLY AGREE THIS SYSTEM WILL BE TOO WEAK AND
DISORGANIZED TO BRING PRECIPITATION TO OUR REGION. THUS...WILL
MAINTAIN DRY WEATHER CONDITIONS BEYOND TUESDAY WITH LINGERING
MID/HIGH LEVEL CLOUDS STREAMING ACROSS CENTRAL CALIFORNIA. GIVEN
ONLY SLIGHT COOLING ALOFT FROM THESE TWO SYSTEMS...TEMPERATURES
ACROSS THE REGION WILL LIKELY REMAIN ABOVE SEASONAL AVERAGES
THROUGH THE WORK WEEK.

THE UPPER LEVEL RIDGE OFF OF THE WEST COAST IS THEN FORECAST TO
NOSE INTO NORTHERN AND CENTRAL CALIFORNIA LATE IN THE WEEK. THIS
WILL MAINTAIN DRY WEATHER CONDITIONS AND RESULT IN ANOTHER
WARMING TREND ACROSS THE FORECAST AREA THROUGH THE UPCOMING
WEEKEND. WITH THIS...JANUARY 2015 WILL LIKELY GO DOWN IN THE
RECORD BOOKS AS THE DRIEST ON RECORD FOR MANY (IF NOT MOST) SITES
ACROSS THE SAN FRANCISCO/MONTEREY BAY AREA.

&&

.AVIATION...AS OF 4:00 AM PST MONDAY...OFFSHORE WINDS ARE HOLDING
ON BUT WILL WEAKEN BEGINNING THIS AFTERNOON AS A WEAKENING UPPER
LEVEL LOW APPROACHES THE AREA TONIGHT AND TUESDAY. KSTS REPORTS
VISIBILITY REDUCED TO IFR IN FOG OTHERWISE AREA TERMINALS REPORT
VFR.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.MARINE...AS OF 03:46 AM PST MONDAY...HIGH PRESSURE OVER THE GREAT
BASIN WILL MOVE SOUTH AND WEAKEN. WINDS WILL SWITCH TO A SOUTHEAST
DIRECTION THROUGH TUESDAY. HIGH PRESSURE WILL BUILD OFF THE
PACIFIC NORTHWEST WEDNESDAY AND THURSDAY FOR A RETURN TO NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RWW
AVIATION: CANEPA
MARINE: W PI/CANEPA

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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000
FXUS66 KMTR 261204
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
404 AM PST MON JAN 26 2015

.SYNOPSIS...TEMPERATURES COOL SLIGHTLY FOR THE START OF THE WORK
WEEK AS HIGH PRESSURE OVER CALIFORNIA WEAKENS AND SHIFTS EASTWARD.
A WEAK STORM SYSTEM WILL THEN MOVE INTO SOUTHERN CALIFORNIA
TONIGHT INTO TUESDAY...BRINGING A SLIGHT CHANCE OF PRECIPITATION
TO AREAS SOUTH OF THE BAY AREA.

&&

.DISCUSSION...AS OF 03:46 AM PST MONDAY...THE CENTER OF THE
MID/UPPER LEVEL HIGH THAT RESULTED IN RECORD BREAKING
TEMPERATURES ACROSS PORTIONS OF THE REGION THIS WEEKEND WILL
CONTINUE TO SHIFT FURTHER INLAND TODAY. MEANWHILE...AN UPPER
LEVEL LOW PRESSURE SYSTEM CURRENTLY SOUTHWEST OF THE SOUTHERN
CALIFORNIA COAST WILL SHIFT NORTHWARD DURING THE NEXT 12 TO 36
HOURS. THIS FEATURE HAS ALREADY BROUGHT AN INCREASE IN MID/HIGH
LEVEL CLOUDS OVER THE REGION THIS MORNING WITH DEEPER MOISTURE
FORECAST TO ADVECT NORTHWARD THROUGH TUESDAY. THE LATEST FORECAST
GUIDANCE CONTINUES TO SHOW LIGHT PRECIPITATION SPREADING ACROSS
MONTEREY AND SAN BENITO COUNTIES LATE TONIGHT AND MAY REACH AS
FAR NORTH AS THE SANTA CLARA VALLEY/EAST BAY BY TUESDAY MORNING.
IT STILL APPEARS RAINFALL AMOUNTS WILL REMAIN LIGHT AS THE LOW
BEGINS TO TRANSITION INTO AN OPEN WAVE AND BECOMES SHEARED APART
WHILE APPROACHING THE CENTRAL COAST ON TUESDAY. MOST AREAS THAT
DO RECEIVE RAINFALL WILL LIKELY ONLY PICK UP A FEW HUNDREDTHS TO
ONE- TENTH OF AN INCH. HOWEVER...CANNOT RULE OUT RAINFALL AMOUNTS
UP TO ONE-QUARTER OF AN INCH WITHIN HEAVIER SHOWERS THAT MAY
DEVELOP OVER THE HIGHER ELEVATIONS. A FEW SHOWERS MAY LINGER INTO
TUESDAY AFTERNOON BEFORE THE MID/UPPER LEVEL SUPPORT AND
ASSOCIATED MOISTURE SHIFT INLAND.

ANOTHER MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE SYSTEM
IS FORECAST TO FOLLOW BEHIND THE AFOREMENTIONED SYSTEM AND
APPROACH SOUTHERN CALIFORNIA BY MIDWEEK. UNFORTUNATELY...THE
MODEL GENERALLY AGREE THIS SYSTEM WILL BE TOO WEAK AND
DISORGANIZED TO BRING PRECIPITATION TO OUR REGION. THUS...WILL
MAINTAIN DRY WEATHER CONDITIONS BEYOND TUESDAY WITH LINGERING
MID/HIGH LEVEL CLOUDS STREAMING ACROSS CENTRAL CALIFORNIA. GIVEN
ONLY SLIGHT COOLING ALOFT FROM THESE TWO SYSTEMS...TEMPERATURES
ACROSS THE REGION WILL LIKELY REMAIN ABOVE SEASONAL AVERAGES
THROUGH THE WORK WEEK.

THE UPPER LEVEL RIDGE OFF OF THE WEST COAST IS THEN FORECAST TO
NOSE INTO NORTHERN AND CENTRAL CALIFORNIA LATE IN THE WEEK. THIS
WILL MAINTAIN DRY WEATHER CONDITIONS AND RESULT IN ANOTHER
WARMING TREND ACROSS THE FORECAST AREA THROUGH THE UPCOMING
WEEKEND. WITH THIS...JANUARY 2015 WILL LIKELY GO DOWN IN THE
RECORD BOOKS AS THE DRIEST ON RECORD FOR MANY (IF NOT MOST) SITES
ACROSS THE SAN FRANCISCO/MONTEREY BAY AREA.

&&

.AVIATION...AS OF 4:00 AM PST MONDAY...OFFSHORE WINDS ARE HOLDING
ON BUT WILL WEAKEN BEGINNING THIS AFTERNOON AS A WEAKENING UPPER
LEVEL LOW APPROACHES THE AREA TONIGHT AND TUESDAY. KSTS REPORTS
VISIBILITY REDUCED TO IFR IN FOG OTHERWISE AREA TERMINALS REPORT
VFR.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.MARINE...AS OF 03:46 AM PST MONDAY...HIGH PRESSURE OVER THE GREAT
BASIN WILL MOVE SOUTH AND WEAKEN. WINDS WILL SWITCH TO A SOUTHEAST
DIRECTION THROUGH TUESDAY. HIGH PRESSURE WILL BUILD OFF THE
PACIFIC NORTHWEST WEDNESDAY AND THURSDAY FOR A RETURN TO NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION: CANEPA
MARINE: W PI/CANEPA

VISIT US AT WEATHER.GOV/SANFRANCISCO

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000
FXUS66 KMTR 261204
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
404 AM PST MON JAN 26 2015

.SYNOPSIS...TEMPERATURES COOL SLIGHTLY FOR THE START OF THE WORK
WEEK AS HIGH PRESSURE OVER CALIFORNIA WEAKENS AND SHIFTS EASTWARD.
A WEAK STORM SYSTEM WILL THEN MOVE INTO SOUTHERN CALIFORNIA
TONIGHT INTO TUESDAY...BRINGING A SLIGHT CHANCE OF PRECIPITATION
TO AREAS SOUTH OF THE BAY AREA.

&&

.DISCUSSION...AS OF 03:46 AM PST MONDAY...THE CENTER OF THE
MID/UPPER LEVEL HIGH THAT RESULTED IN RECORD BREAKING
TEMPERATURES ACROSS PORTIONS OF THE REGION THIS WEEKEND WILL
CONTINUE TO SHIFT FURTHER INLAND TODAY. MEANWHILE...AN UPPER
LEVEL LOW PRESSURE SYSTEM CURRENTLY SOUTHWEST OF THE SOUTHERN
CALIFORNIA COAST WILL SHIFT NORTHWARD DURING THE NEXT 12 TO 36
HOURS. THIS FEATURE HAS ALREADY BROUGHT AN INCREASE IN MID/HIGH
LEVEL CLOUDS OVER THE REGION THIS MORNING WITH DEEPER MOISTURE
FORECAST TO ADVECT NORTHWARD THROUGH TUESDAY. THE LATEST FORECAST
GUIDANCE CONTINUES TO SHOW LIGHT PRECIPITATION SPREADING ACROSS
MONTEREY AND SAN BENITO COUNTIES LATE TONIGHT AND MAY REACH AS
FAR NORTH AS THE SANTA CLARA VALLEY/EAST BAY BY TUESDAY MORNING.
IT STILL APPEARS RAINFALL AMOUNTS WILL REMAIN LIGHT AS THE LOW
BEGINS TO TRANSITION INTO AN OPEN WAVE AND BECOMES SHEARED APART
WHILE APPROACHING THE CENTRAL COAST ON TUESDAY. MOST AREAS THAT
DO RECEIVE RAINFALL WILL LIKELY ONLY PICK UP A FEW HUNDREDTHS TO
ONE- TENTH OF AN INCH. HOWEVER...CANNOT RULE OUT RAINFALL AMOUNTS
UP TO ONE-QUARTER OF AN INCH WITHIN HEAVIER SHOWERS THAT MAY
DEVELOP OVER THE HIGHER ELEVATIONS. A FEW SHOWERS MAY LINGER INTO
TUESDAY AFTERNOON BEFORE THE MID/UPPER LEVEL SUPPORT AND
ASSOCIATED MOISTURE SHIFT INLAND.

ANOTHER MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE SYSTEM
IS FORECAST TO FOLLOW BEHIND THE AFOREMENTIONED SYSTEM AND
APPROACH SOUTHERN CALIFORNIA BY MIDWEEK. UNFORTUNATELY...THE
MODEL GENERALLY AGREE THIS SYSTEM WILL BE TOO WEAK AND
DISORGANIZED TO BRING PRECIPITATION TO OUR REGION. THUS...WILL
MAINTAIN DRY WEATHER CONDITIONS BEYOND TUESDAY WITH LINGERING
MID/HIGH LEVEL CLOUDS STREAMING ACROSS CENTRAL CALIFORNIA. GIVEN
ONLY SLIGHT COOLING ALOFT FROM THESE TWO SYSTEMS...TEMPERATURES
ACROSS THE REGION WILL LIKELY REMAIN ABOVE SEASONAL AVERAGES
THROUGH THE WORK WEEK.

THE UPPER LEVEL RIDGE OFF OF THE WEST COAST IS THEN FORECAST TO
NOSE INTO NORTHERN AND CENTRAL CALIFORNIA LATE IN THE WEEK. THIS
WILL MAINTAIN DRY WEATHER CONDITIONS AND RESULT IN ANOTHER
WARMING TREND ACROSS THE FORECAST AREA THROUGH THE UPCOMING
WEEKEND. WITH THIS...JANUARY 2015 WILL LIKELY GO DOWN IN THE
RECORD BOOKS AS THE DRIEST ON RECORD FOR MANY (IF NOT MOST) SITES
ACROSS THE SAN FRANCISCO/MONTEREY BAY AREA.

&&

.AVIATION...AS OF 4:00 AM PST MONDAY...OFFSHORE WINDS ARE HOLDING
ON BUT WILL WEAKEN BEGINNING THIS AFTERNOON AS A WEAKENING UPPER
LEVEL LOW APPROACHES THE AREA TONIGHT AND TUESDAY. KSTS REPORTS
VISIBILITY REDUCED TO IFR IN FOG OTHERWISE AREA TERMINALS REPORT
VFR.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.MARINE...AS OF 03:46 AM PST MONDAY...HIGH PRESSURE OVER THE GREAT
BASIN WILL MOVE SOUTH AND WEAKEN. WINDS WILL SWITCH TO A SOUTHEAST
DIRECTION THROUGH TUESDAY. HIGH PRESSURE WILL BUILD OFF THE
PACIFIC NORTHWEST WEDNESDAY AND THURSDAY FOR A RETURN TO NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION: CANEPA
MARINE: W PI/CANEPA

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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000
FXUS66 KMTR 261151
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
351 AM PST MON JAN 26 2015

.SYNOPSIS...TEMPERATURES COOL SLIGHTLY FOR THE START OF THE WORK
WEEK AS HIGH PRESSURE OVER CALIFORNIA WEAKENS AND SHIFTS EASTWARD.
A WEAK STORM SYSTEM WILL THEN MOVE INTO SOUTHERN CALIFORNIA
TONIGHT INTO TUESDAY...BRINGING A SLIGHT CHANCE OF PRECIPITATION
TO AREAS SOUTH OF THE BAY AREA.

&&

.DISCUSSION...AS OF 03:46 AM PST MONDAY...THE CENTER OF THE
MID/UPPER LEVEL HIGH THAT RESULTED IN RECORD BREAKING
TEMPERATURES ACROSS PORTIONS OF THE REGION THIS WEEKEND WILL
CONTINUE TO SHIFT FURTHER INLAND TODAY. MEANWHILE...AN UPPER
LEVEL LOW PRESSURE SYSTEM CURRENTLY SOUTHWEST OF THE SOUTHERN
CALIFORNIA COAST WILL SHIFT NORTHWARD DURING THE NEXT 12 TO 36
HOURS. THIS FEATURE HAS ALREADY BROUGHT AN INCREASE IN MID/HIGH
LEVEL CLOUDS OVER THE REGION THIS MORNING WITH DEEPER MOISTURE
FORECAST TO ADVECT NORTHWARD THROUGH TUESDAY. THE LATEST FORECAST
GUIDANCE CONTINUES TO SHOW LIGHT PRECIPITATION SPREADING ACROSS
MONTEREY AND SAN BENITO COUNTIES LATE TONIGHT AND MAY REACH AS
FAR NORTH AS THE SANTA CLARA VALLEY/EAST BAY BY TUESDAY MORNING.
IT STILL APPEARS RAINFALL AMOUNTS WILL REMAIN LIGHT AS THE LOW
BEGINS TO TRANSITION INTO AN OPEN WAVE AND BECOMES SHEARED APART
WHILE APPROACHING THE CENTRAL COAST ON TUESDAY. MOST AREAS THAT
DO RECEIVE RAINFALL WILL LIKELY ONLY PICK UP A FEW HUNDREDTHS TO
ONE- TENTH OF AN INCH. HOWEVER...CANNOT RULE OUT RAINFALL AMOUNTS
UP TO ONE-QUARTER OF AN INCH WITHIN HEAVIER SHOWERS THAT MAY
DEVELOP OVER THE HIGHER ELEVATIONS. A FEW SHOWERS MAY LINGER INTO
TUESDAY AFTERNOON BEFORE THE MID/UPPER LEVEL SUPPORT AND
ASSOCIATED MOISTURE SHIFT INLAND.

ANOTHER MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE SYSTEM
IS FORECAST TO FOLLOW BEHIND THE AFOREMENTIONED SYSTEM AND
APPROACH SOUTHERN CALIFORNIA BY MIDWEEK. UNFORTUNATELY...THE
MODEL GENERALLY AGREE THIS SYSTEM WILL BE TOO WEAK AND
DISORGANIZED TO BRING PRECIPITATION TO OUR REGION. THUS...WILL
MAINTAIN DRY WEATHER CONDITIONS BEYOND TUESDAY WITH LINGERING
MID/HIGH LEVEL CLOUDS STREAMING ACROSS CENTRAL CALIFORNIA. GIVEN
ONLY SLIGHT COOLING ALOFT FROM THESE TWO SYSTEMS...TEMPERATURES
ACROSS THE REGION WILL LIKELY REMAIN ABOVE SEASONAL AVERAGES
THROUGH THE WORK WEEK.

THE UPPER LEVEL RIDGE OFF OF THE WEST COAST IS THEN FORECAST TO
NOSE INTO NORTHERN AND CENTRAL CALIFORNIA LATE IN THE WEEK. THIS
WILL MAINTAIN DRY WEATHER CONDITIONS AND RESULT IN ANOTHER
WARMING TREND ACROSS THE FORECAST AREA THROUGH THE UPCOMING
WEEKEND. WITH THIS...JANUARY 2015 WILL LIKELY GO DOWN IN THE
RECORD BOOKS AS THE DRIEST ON RECORD FOR MANY (IF NOT MOST) SITES
ACROSS THE SAN FRANCISCO/MONTEREY BAY AREA.


&&

.AVIATION...AS OF 10:30 PM PST SUNDAY...OFFSHORE FLOW WEAKENING
BUT AIRMASS REMAINS DRY ENOUGH FOR VFR CONDITIONS. CENTRAL VALLEY
FOG MAY STILL IMPACT THE INTERIOR NORTH AND EAST BAY VALLEYS LATE
TONIGHT. HIGH CLOUDS MOVING IN FROM THE SOUTH.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF 5-6 MILE
VSBY IN HAZE.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.MARINE...AS OF 03:46 AM PST MONDAY...HIGH PRESSURE OVER THE GREAT
BASIN WILL MOVE SOUTH AND WEAKEN. WINDS WILL SWITCH TO A SOUTHEAST
DIRECTION THROUGH TUESDAY. HIGH PRESSURE WILL BUILD OFF THE
PACIFIC NORTHWEST WEDNESDAY AND THURSDAY FOR A RETURN TO NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION: W PI
MARINE: CANEPA

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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WWW.YOUTUBE.COM/NWSBAYAREA






000
FXUS66 KMTR 261151
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
351 AM PST MON JAN 26 2015

.SYNOPSIS...TEMPERATURES COOL SLIGHTLY FOR THE START OF THE WORK
WEEK AS HIGH PRESSURE OVER CALIFORNIA WEAKENS AND SHIFTS EASTWARD.
A WEAK STORM SYSTEM WILL THEN MOVE INTO SOUTHERN CALIFORNIA
TONIGHT INTO TUESDAY...BRINGING A SLIGHT CHANCE OF PRECIPITATION
TO AREAS SOUTH OF THE BAY AREA.

&&

.DISCUSSION...AS OF 03:46 AM PST MONDAY...THE CENTER OF THE
MID/UPPER LEVEL HIGH THAT RESULTED IN RECORD BREAKING
TEMPERATURES ACROSS PORTIONS OF THE REGION THIS WEEKEND WILL
CONTINUE TO SHIFT FURTHER INLAND TODAY. MEANWHILE...AN UPPER
LEVEL LOW PRESSURE SYSTEM CURRENTLY SOUTHWEST OF THE SOUTHERN
CALIFORNIA COAST WILL SHIFT NORTHWARD DURING THE NEXT 12 TO 36
HOURS. THIS FEATURE HAS ALREADY BROUGHT AN INCREASE IN MID/HIGH
LEVEL CLOUDS OVER THE REGION THIS MORNING WITH DEEPER MOISTURE
FORECAST TO ADVECT NORTHWARD THROUGH TUESDAY. THE LATEST FORECAST
GUIDANCE CONTINUES TO SHOW LIGHT PRECIPITATION SPREADING ACROSS
MONTEREY AND SAN BENITO COUNTIES LATE TONIGHT AND MAY REACH AS
FAR NORTH AS THE SANTA CLARA VALLEY/EAST BAY BY TUESDAY MORNING.
IT STILL APPEARS RAINFALL AMOUNTS WILL REMAIN LIGHT AS THE LOW
BEGINS TO TRANSITION INTO AN OPEN WAVE AND BECOMES SHEARED APART
WHILE APPROACHING THE CENTRAL COAST ON TUESDAY. MOST AREAS THAT
DO RECEIVE RAINFALL WILL LIKELY ONLY PICK UP A FEW HUNDREDTHS TO
ONE- TENTH OF AN INCH. HOWEVER...CANNOT RULE OUT RAINFALL AMOUNTS
UP TO ONE-QUARTER OF AN INCH WITHIN HEAVIER SHOWERS THAT MAY
DEVELOP OVER THE HIGHER ELEVATIONS. A FEW SHOWERS MAY LINGER INTO
TUESDAY AFTERNOON BEFORE THE MID/UPPER LEVEL SUPPORT AND
ASSOCIATED MOISTURE SHIFT INLAND.

ANOTHER MID/UPPER LEVEL TROUGH AND ASSOCIATED LOW PRESSURE SYSTEM
IS FORECAST TO FOLLOW BEHIND THE AFOREMENTIONED SYSTEM AND
APPROACH SOUTHERN CALIFORNIA BY MIDWEEK. UNFORTUNATELY...THE
MODEL GENERALLY AGREE THIS SYSTEM WILL BE TOO WEAK AND
DISORGANIZED TO BRING PRECIPITATION TO OUR REGION. THUS...WILL
MAINTAIN DRY WEATHER CONDITIONS BEYOND TUESDAY WITH LINGERING
MID/HIGH LEVEL CLOUDS STREAMING ACROSS CENTRAL CALIFORNIA. GIVEN
ONLY SLIGHT COOLING ALOFT FROM THESE TWO SYSTEMS...TEMPERATURES
ACROSS THE REGION WILL LIKELY REMAIN ABOVE SEASONAL AVERAGES
THROUGH THE WORK WEEK.

THE UPPER LEVEL RIDGE OFF OF THE WEST COAST IS THEN FORECAST TO
NOSE INTO NORTHERN AND CENTRAL CALIFORNIA LATE IN THE WEEK. THIS
WILL MAINTAIN DRY WEATHER CONDITIONS AND RESULT IN ANOTHER
WARMING TREND ACROSS THE FORECAST AREA THROUGH THE UPCOMING
WEEKEND. WITH THIS...JANUARY 2015 WILL LIKELY GO DOWN IN THE
RECORD BOOKS AS THE DRIEST ON RECORD FOR MANY (IF NOT MOST) SITES
ACROSS THE SAN FRANCISCO/MONTEREY BAY AREA.


&&

.AVIATION...AS OF 10:30 PM PST SUNDAY...OFFSHORE FLOW WEAKENING
BUT AIRMASS REMAINS DRY ENOUGH FOR VFR CONDITIONS. CENTRAL VALLEY
FOG MAY STILL IMPACT THE INTERIOR NORTH AND EAST BAY VALLEYS LATE
TONIGHT. HIGH CLOUDS MOVING IN FROM THE SOUTH.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF 5-6 MILE
VSBY IN HAZE.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.MARINE...AS OF 03:46 AM PST MONDAY...HIGH PRESSURE OVER THE GREAT
BASIN WILL MOVE SOUTH AND WEAKEN. WINDS WILL SWITCH TO A SOUTHEAST
DIRECTION THROUGH TUESDAY. HIGH PRESSURE WILL BUILD OFF THE
PACIFIC NORTHWEST WEDNESDAY AND THURSDAY FOR A RETURN TO NORTHWEST
WINDS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

$$

PUBLIC FORECAST: RGASS
AVIATION: W PI
MARINE: CANEPA

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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000
FXUS66 KMTR 260654
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1054 PM PST SUN JAN 25 2015

.SYNOPSIS...SLIGHT COOLING IS FORECAST FOR MONDAY AS HIGH PRESSURE
OVER CALIFORNIA WEAKENS AND MOVES TO THE EAST. A WEAK STORM SYSTEM
WILL MOVE INTO SOUTHERN CALIFORNIA ON MONDAY NIGHT AND BRING A
CHANCE OF RAIN TO THE SOUTHERN PORTION OF OUR AREA ON MONDAY NIGHT
AND TUESDAY...MAINLY AREAS SOUTH OF SAN JOSE. DRY AND MILD WEATHER
IS THEN FORECAST FROM WEDNESDAY THROUGH THE END OF THE WEEK.

&&

.DISCUSSION...AS OF 8:55 PM PST SUNDAY...SLOW CLEARING OF FOG/LOW
CLOUDS ACROSS MUCH OF THE SF BAY AREA TODAY HELD TEMPERATURES
DOWN FOR MOST BAY AREA LOCATIONS. THERE WAS HOWEVER A LATE DAY
UPWARD SURGE IN TEMPS WHICH MANAGED TO PUSH RICHMOND`S HIGH TEMP
UP TO 69...ENOUGH TO TIE A RECORD THERE. FARTHER SOUTH...FROM
MONTEREY BAY SOUTHWARD...THE DAY STARTED OFF SUNNY AND
TEMPERATURES CLIMBED QUICKLY. FIVE LOCATIONS AROUND MONTEREY BAY
AND IN THE SALINAS VALLEY SET DAILY HIGH TEMPERATURE RECORDS THIS
AFTERNOON...INCLUDING AN 84 DEGREE HIGH AT THE MONTEREY CLIMATE
STATION AND AN 83 IN SANTA CRUZ. THE HIGH OF 83 IN SANTA CRUZ CAME
WITHIN ONE DEGREE OF MATCHING THE ALL-TIME JANUARY RECORD OF 84
SET JUST LAST YEAR (JANUARY 16 2014).

FOG AND LOW CLOUDS ARE LARGELY ABSENT FROM THE CENTRAL VALLEY THIS
EVENING...UNLIKE THE PAST TWO EVENINGS WHEN FOG BLANKETED THE
CENTRAL VALLEY...AND THEN SUBSEQUENTLY DEVELOPED INTO OUR NORTH
AND EAST BAY VALLEYS OVERNIGHT. HOWEVER...THE LOW LEVELS REMAIN
RELATIVELY MOIST AND WOULD EXPECT AREAS OF FOG TO REDEVELOP IN
THE N AND E BAY VALLEYS LATE TONIGHT AND PERSIST INTO MONDAY
MORNING.

EVENING WATER VAPOR SATELLITE IMAGERY SHOWS THE UNSEASONABLY
STRONG UPPER RIDGE OVER NORTHERN CA BEGINNING TO MOVE TO THE
EAST...A PROCESS THAT WILL CONTINUE INTO MONDAY. MEANWHILE A WEAK
UPPER LOW WEST OF BAJA WILL BEGIN TO LIFT TO THE NORTH. HIGH
CLOUDS ASSOCIATED WITH THIS LOW CENTER ARE DRIFTING WELL OUT AHEAD
OF IT...ALREADY BEGINNING TO OVERSPREAD THE SOUTHERN PART OF OUR
FORECAST AREA. THE COMBINATION OF INCREASING HIGH CLOUDS AND
THE WEAKENING UPPER RIDGE WILL RESULT IN SLIGHT COOLING ON
MONDAY...ESPECIALLY ACROSS THE SOUTHERN PART OF OUR AREA WHERE
HIGHS WILL BE FROM 5 TO 10 DEGREES COOLER COMPARED TO TODAY.

THE MODELS HAVE COME INTO REASONABLY GOOD AGREEMENT REGARDING THE
TRACK OF THE UPPER LOW AND ITS ASSOCIATED PRECIP. THE GENERAL IDEA
IS FOR THE LOW TO DRIFT DUE NORTH MONDAY AND MONDAY
NIGHT...APPROACHING POINT CONCEPTION BY LATE MONDAY NIGHT...WITH
THE LOW THEN TRANSITIONING TO AN OPEN WAVE AND SHEARING APART AS
IT TRAVERSES SOUTH-CENTRAL CALIFORNIA ON TUESDAY MORNING. THE NAM
CONTINUES TO BE THE MOST BULLISH OF THE MODELS IN REGARD TO PRECIP
POTENTIAL FROM THIS SYSTEM...FORECASTING LIGHT RAIN TO OVERSPREAD
ALL OF MONTEREY AND SAN BENITO COUNTIES ON MONDAY NIGHT...WITH
RAIN THEN REACHING AS FAR NORTH AS PALO ALTO AND LIVERMORE BY
DAYBREAK TUESDAY. THE 00Z GFS IS WETTER COMPARED TO ITS
PREVIOUS RUNS AND IS NOW SIMILAR TO THE NAM IN TERMS OF HOW
MUCH OF OUR FORECAST AREA WILL GET WET. HOWEVER...THE NAM
CONTINUES TO FORECAST GREATER RAINFALL AMOUNTS. THE NAM FORECASTS
IN EXCESS OF A HALF INCH OF RAIN ACROSS MUCH OF MONTEREY COUNTY ON
MONDAY NIGHT AND TUESDAY MORNING...WHILE THE GFS FORECASTS ONLY
ABOUT HALF THAT. PRECIPITABLE WATER VALUES MOVING NORTH OUT OF
BAJA ARE LACKLUSTER UP TO THIS POINT...SO IT SEEMS THE NAM MAY BE
OVERLY OPTIMISTIC. IN ANY CASE...IT`S BEGINNING TO LOOK LIKELY
THAT AT LEAST OUR SOUTHERN-MOST COUNTIES WILL GET SOME MEASURABLE
RAIN OUT OF THIS SYSTEM...AND POPS ACROSS MONTEREY AND SAN BENITO
COUNTIES MAY NEED TO BE RAISED DEPENDING ON WHAT THE 00Z ECMWF
SHOWS.

BY THE TIME THE SYSTEM CURRENTLY APPROACHING FROM THE SOUTH EXITS
TO OUR EAST LATE TUE...ANOTHER WEAK AND COMPLEX SYSTEM WILL BE
APPROACHING CALIFORNIA FROM THE WEST AND SOUTHWEST...DUE TO
ARRIVE OVER CA EITHER WEDNESDAY OR WEDNESDAY NIGHT. THE MODELS
AGREE THAT THIS MIDWEEK SYSTEM WILL BE TOO WEAK AND DISORGANIZED
TO PRODUCE PRECIP OVER OUR AREA AND WILL LIKELY ONLY GENERATE SOME
CLOUD COVER.

AN UPPER RIDGE OFFSHORE IS EXPECTED TO NOSE INLAND ACROSS NORTHERN
CA DURING THE SECOND HALF OF THE WEEK AND MAINTAIN A DRY WEATHER
PATTERN THROUGH THE END OF JANUARY.

&&

.AVIATION...AS OF 10:30 PM PST SUNDAY...OFFSHORE FLOW WEAKENING
BUT AIRMASS REMAINS DRY ENOUGH FOR VFR CONDITIONS. CENTRAL VALLEY
FOG MAY STILL IMPACT THE INTERIOR NORTH AND EAST BAY VALLEYS LATE
TONIGHT. HIGH CLOUDS MOVING IN FROM THE SOUTH.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF 5-6 MILE
VSBY IN HAZE.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 2:19 PM PST SUNDAY...LIGHT OFFSHORE FLOW NEAR THE
COAST WITH SOUTHERLY FLOW FURTHER OFFSHORE DUE TO HIGH PRESSURE
OVER THE GREAT BASIN OVER THE NEXT 24 HOURS. WINDS VEER TO THE
SOUTH TUESDAY WITH NORTHERLY WINDS RETURNING LATE WEDNESDAY.
NORTHWEST SWELL WILL GRADUALLY DIMINISH THROUGH THE UPCOMING WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: DYKEMA
AVIATION: W PI
MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA







000
FXUS66 KMTR 260654
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1054 PM PST SUN JAN 25 2015

.SYNOPSIS...SLIGHT COOLING IS FORECAST FOR MONDAY AS HIGH PRESSURE
OVER CALIFORNIA WEAKENS AND MOVES TO THE EAST. A WEAK STORM SYSTEM
WILL MOVE INTO SOUTHERN CALIFORNIA ON MONDAY NIGHT AND BRING A
CHANCE OF RAIN TO THE SOUTHERN PORTION OF OUR AREA ON MONDAY NIGHT
AND TUESDAY...MAINLY AREAS SOUTH OF SAN JOSE. DRY AND MILD WEATHER
IS THEN FORECAST FROM WEDNESDAY THROUGH THE END OF THE WEEK.

&&

.DISCUSSION...AS OF 8:55 PM PST SUNDAY...SLOW CLEARING OF FOG/LOW
CLOUDS ACROSS MUCH OF THE SF BAY AREA TODAY HELD TEMPERATURES
DOWN FOR MOST BAY AREA LOCATIONS. THERE WAS HOWEVER A LATE DAY
UPWARD SURGE IN TEMPS WHICH MANAGED TO PUSH RICHMOND`S HIGH TEMP
UP TO 69...ENOUGH TO TIE A RECORD THERE. FARTHER SOUTH...FROM
MONTEREY BAY SOUTHWARD...THE DAY STARTED OFF SUNNY AND
TEMPERATURES CLIMBED QUICKLY. FIVE LOCATIONS AROUND MONTEREY BAY
AND IN THE SALINAS VALLEY SET DAILY HIGH TEMPERATURE RECORDS THIS
AFTERNOON...INCLUDING AN 84 DEGREE HIGH AT THE MONTEREY CLIMATE
STATION AND AN 83 IN SANTA CRUZ. THE HIGH OF 83 IN SANTA CRUZ CAME
WITHIN ONE DEGREE OF MATCHING THE ALL-TIME JANUARY RECORD OF 84
SET JUST LAST YEAR (JANUARY 16 2014).

FOG AND LOW CLOUDS ARE LARGELY ABSENT FROM THE CENTRAL VALLEY THIS
EVENING...UNLIKE THE PAST TWO EVENINGS WHEN FOG BLANKETED THE
CENTRAL VALLEY...AND THEN SUBSEQUENTLY DEVELOPED INTO OUR NORTH
AND EAST BAY VALLEYS OVERNIGHT. HOWEVER...THE LOW LEVELS REMAIN
RELATIVELY MOIST AND WOULD EXPECT AREAS OF FOG TO REDEVELOP IN
THE N AND E BAY VALLEYS LATE TONIGHT AND PERSIST INTO MONDAY
MORNING.

EVENING WATER VAPOR SATELLITE IMAGERY SHOWS THE UNSEASONABLY
STRONG UPPER RIDGE OVER NORTHERN CA BEGINNING TO MOVE TO THE
EAST...A PROCESS THAT WILL CONTINUE INTO MONDAY. MEANWHILE A WEAK
UPPER LOW WEST OF BAJA WILL BEGIN TO LIFT TO THE NORTH. HIGH
CLOUDS ASSOCIATED WITH THIS LOW CENTER ARE DRIFTING WELL OUT AHEAD
OF IT...ALREADY BEGINNING TO OVERSPREAD THE SOUTHERN PART OF OUR
FORECAST AREA. THE COMBINATION OF INCREASING HIGH CLOUDS AND
THE WEAKENING UPPER RIDGE WILL RESULT IN SLIGHT COOLING ON
MONDAY...ESPECIALLY ACROSS THE SOUTHERN PART OF OUR AREA WHERE
HIGHS WILL BE FROM 5 TO 10 DEGREES COOLER COMPARED TO TODAY.

THE MODELS HAVE COME INTO REASONABLY GOOD AGREEMENT REGARDING THE
TRACK OF THE UPPER LOW AND ITS ASSOCIATED PRECIP. THE GENERAL IDEA
IS FOR THE LOW TO DRIFT DUE NORTH MONDAY AND MONDAY
NIGHT...APPROACHING POINT CONCEPTION BY LATE MONDAY NIGHT...WITH
THE LOW THEN TRANSITIONING TO AN OPEN WAVE AND SHEARING APART AS
IT TRAVERSES SOUTH-CENTRAL CALIFORNIA ON TUESDAY MORNING. THE NAM
CONTINUES TO BE THE MOST BULLISH OF THE MODELS IN REGARD TO PRECIP
POTENTIAL FROM THIS SYSTEM...FORECASTING LIGHT RAIN TO OVERSPREAD
ALL OF MONTEREY AND SAN BENITO COUNTIES ON MONDAY NIGHT...WITH
RAIN THEN REACHING AS FAR NORTH AS PALO ALTO AND LIVERMORE BY
DAYBREAK TUESDAY. THE 00Z GFS IS WETTER COMPARED TO ITS
PREVIOUS RUNS AND IS NOW SIMILAR TO THE NAM IN TERMS OF HOW
MUCH OF OUR FORECAST AREA WILL GET WET. HOWEVER...THE NAM
CONTINUES TO FORECAST GREATER RAINFALL AMOUNTS. THE NAM FORECASTS
IN EXCESS OF A HALF INCH OF RAIN ACROSS MUCH OF MONTEREY COUNTY ON
MONDAY NIGHT AND TUESDAY MORNING...WHILE THE GFS FORECASTS ONLY
ABOUT HALF THAT. PRECIPITABLE WATER VALUES MOVING NORTH OUT OF
BAJA ARE LACKLUSTER UP TO THIS POINT...SO IT SEEMS THE NAM MAY BE
OVERLY OPTIMISTIC. IN ANY CASE...IT`S BEGINNING TO LOOK LIKELY
THAT AT LEAST OUR SOUTHERN-MOST COUNTIES WILL GET SOME MEASURABLE
RAIN OUT OF THIS SYSTEM...AND POPS ACROSS MONTEREY AND SAN BENITO
COUNTIES MAY NEED TO BE RAISED DEPENDING ON WHAT THE 00Z ECMWF
SHOWS.

BY THE TIME THE SYSTEM CURRENTLY APPROACHING FROM THE SOUTH EXITS
TO OUR EAST LATE TUE...ANOTHER WEAK AND COMPLEX SYSTEM WILL BE
APPROACHING CALIFORNIA FROM THE WEST AND SOUTHWEST...DUE TO
ARRIVE OVER CA EITHER WEDNESDAY OR WEDNESDAY NIGHT. THE MODELS
AGREE THAT THIS MIDWEEK SYSTEM WILL BE TOO WEAK AND DISORGANIZED
TO PRODUCE PRECIP OVER OUR AREA AND WILL LIKELY ONLY GENERATE SOME
CLOUD COVER.

AN UPPER RIDGE OFFSHORE IS EXPECTED TO NOSE INLAND ACROSS NORTHERN
CA DURING THE SECOND HALF OF THE WEEK AND MAINTAIN A DRY WEATHER
PATTERN THROUGH THE END OF JANUARY.

&&

.AVIATION...AS OF 10:30 PM PST SUNDAY...OFFSHORE FLOW WEAKENING
BUT AIRMASS REMAINS DRY ENOUGH FOR VFR CONDITIONS. CENTRAL VALLEY
FOG MAY STILL IMPACT THE INTERIOR NORTH AND EAST BAY VALLEYS LATE
TONIGHT. HIGH CLOUDS MOVING IN FROM THE SOUTH.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF 5-6 MILE
VSBY IN HAZE.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 2:19 PM PST SUNDAY...LIGHT OFFSHORE FLOW NEAR THE
COAST WITH SOUTHERLY FLOW FURTHER OFFSHORE DUE TO HIGH PRESSURE
OVER THE GREAT BASIN OVER THE NEXT 24 HOURS. WINDS VEER TO THE
SOUTH TUESDAY WITH NORTHERLY WINDS RETURNING LATE WEDNESDAY.
NORTHWEST SWELL WILL GRADUALLY DIMINISH THROUGH THE UPCOMING WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: DYKEMA
AVIATION: W PI
MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA






000
FXUS66 KMTR 260457
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
857 PM PST SUN JAN 25 2015

.SYNOPSIS...SLIGHT COOLING IS FORECAST FOR MONDAY AS HIGH PRESSURE
OVER CALIFORNIA WEAKENS AND MOVES TO THE EAST. A WEAK STORM SYSTEM
WILL MOVE INTO SOUTHERN CALIFORNIA ON MONDAY NIGHT AND BRING A
CHANCE OF RAIN TO THE SOUTHERN PORTION OF OUR AREA ON MONDAY NIGHT
AND TUESDAY...MAINLY AREAS SOUTH OF SAN JOSE. DRY AND MILD WEATHER
IS THEN FORECAST FROM WEDNESDAY THROUGH THE END OF THE WEEK.

&&

.DISCUSSION...AS OF 8:55 PM PST SUNDAY...SLOW CLEARING OF FOG/LOW
CLOUDS ACROSS MUCH OF THE SF BAY AREA TODAY HELD TEMPERATURES
DOWN FOR MOST BAY AREA LOCATIONS. THERE WAS HOWEVER A LATE DAY
UPWARD SURGE IN TEMPS WHICH MANAGED TO PUSH RICHMOND`S HIGH TEMP
UP TO 69...ENOUGH TO TIE A RECORD THERE. FARTHER SOUTH...FROM
MONTEREY BAY SOUTHWARD...THE DAY STARTED OFF SUNNY AND
TEMPERATURES CLIMBED QUICKLY. FIVE LOCATIONS AROUND MONTEREY BAY
AND IN THE SALINAS VALLEY SET DAILY HIGH TEMPERATURE RECORDS THIS
AFTERNOON...INCLUDING AN 84 DEGREE HIGH AT THE MONTEREY CLIMATE
STATION AND AN 83 IN SANTA CRUZ. THE HIGH OF 83 IN SANTA CRUZ CAME
WITHIN ONE DEGREE OF MATCHING THE ALL-TIME JANUARY RECORD OF 84
SET JUST LAST YEAR (JANUARY 16 2014).

FOG AND LOW CLOUDS ARE LARGELY ABSENT FROM THE CENTRAL VALLEY THIS
EVENING...UNLIKE THE PAST TWO EVENINGS WHEN FOG BLANKETED THE
CENTRAL VALLEY...AND THEN SUBSEQUENTLY DEVELOPED INTO OUR NORTH
AND EAST BAY VALLEYS OVERNIGHT. HOWEVER...THE LOW LEVELS REMAIN
RELATIVELY MOIST AND WOULD EXPECT AREAS OF FOG TO REDEVELOP IN
THE N AND E BAY VALLEYS LATE TONIGHT AND PERSIST INTO MONDAY
MORNING.

EVENING WATER VAPOR SATELLITE IMAGERY SHOWS THE UNSEASONABLY
STRONG UPPER RIDGE OVER NORTHERN CA BEGINNING TO MOVE TO THE
EAST...A PROCESS THAT WILL CONTINUE INTO MONDAY. MEANWHILE A WEAK
UPPER LOW WEST OF BAJA WILL BEGIN TO LIFT TO THE NORTH. HIGH
CLOUDS ASSOCIATED WITH THIS LOW CENTER ARE DRIFTING WELL OUT AHEAD
OF IT...ALREADY BEGINNING TO OVERSPREAD THE SOUTHERN PART OF OUR
FORECAST AREA. THE COMBINATION OF INCREASING HIGH CLOUDS AND
THE WEAKENING UPPER RIDGE WILL RESULT IN SLIGHT COOLING ON
MONDAY...ESPECIALLY ACROSS THE SOUTHERN PART OF OUR AREA WHERE
HIGHS WILL BE FROM 5 TO 10 DEGREES COOLER COMPARED TO TODAY.

THE MODELS HAVE COME INTO REASONABLY GOOD AGREEMENT REGARDING THE
TRACK OF THE UPPER LOW AND ITS ASSOCIATED PRECIP. THE GENERAL IDEA
IS FOR THE LOW TO DRIFT DUE NORTH MONDAY AND MONDAY
NIGHT...APPROACHING POINT CONCEPTION BY LATE MONDAY NIGHT...WITH
THE LOW THEN TRANSITIONING TO AN OPEN WAVE AND SHEARING APART AS
IT TRAVERSES SOUTH-CENTRAL CALIFORNIA ON TUESDAY MORNING. THE NAM
CONTINUES TO BE THE MOST BULLISH OF THE MODELS IN REGARD TO PRECIP
POTENTIAL FROM THIS SYSTEM...FORECASTING LIGHT RAIN TO OVERSPREAD
ALL OF MONTEREY AND SAN BENITO COUNTIES ON MONDAY NIGHT...WITH
RAIN THEN REACHING AS FAR NORTH AS PALO ALTO AND LIVERMORE BY
DAYBREAK TUESDAY. THE 00Z GFS IS WETTER COMPARED TO ITS
PREVIOUS RUNS AND IS NOW SIMILAR TO THE NAM IN TERMS OF HOW
MUCH OF OUR FORECAST AREA WILL GET WET. HOWEVER...THE NAM
CONTINUES TO FORECAST GREATER RAINFALL AMOUNTS. THE NAM FORECASTS
IN EXCESS OF A HALF INCH OF RAIN ACROSS MUCH OF MONTEREY COUNTY ON
MONDAY NIGHT AND TUESDAY MORNING...WHILE THE GFS FORECASTS ONLY
ABOUT HALF THAT. PRECIPITABLE WATER VALUES MOVING NORTH OUT OF
BAJA ARE LACKLUSTER UP TO THIS POINT...SO IT SEEMS THE NAM MAY BE
OVERLY OPTIMISTIC. IN ANY CASE...IT`S BEGINNING TO LOOK LIKELY
THAT AT LEAST OUR SOUTHERN-MOST COUNTIES WILL GET SOME MEASURABLE
RAIN OUT OF THIS SYSTEM...AND POPS ACROSS MONTEREY AND SAN BENITO
COUNTIES MAY NEED TO BE RAISED DEPENDING ON WHAT THE 00Z ECMWF
SHOWS.

BY THE TIME THE SYSTEM CURRENTLY APPROACHING FROM THE SOUTH EXITS
TO OUR EAST LATE TUE...ANOTHER WEAK AND COMPLEX SYSTEM WILL BE
APPROACHING CALIFORNIA FROM THE WEST AND SOUTHWEST...DUE TO
ARRIVE OVER CA EITHER WEDNESDAY OR WEDNESDAY NIGHT. THE MODELS
AGREE THAT THIS MIDWEEK SYSTEM WILL BE TOO WEAK AND DISORGANIZED
TO PRODUCE PRECIP OVER OUR AREA AND WILL LIKELY ONLY GENERATE SOME
CLOUD COVER.

AN UPPER RIDGE OFFSHORE IS EXPECTED TO NOSE INLAND ACROSS NORTHERN
CA DURING THE SECOND HALF OF THE WEEK AND MAINTAIN A DRY WEATHER
PATTERN THROUGH THE END OF JANUARY.

&&

.AVIATION...AS OF 5:00 PM PST SUNDAY...OFFSHORE FLOW WEAKENING BUT
AIRMASS REMAINS DRY ENOUGH FOR VFR CONDITIONS. CENTRAL VALLEY FOG
MAY STILL IMPACT THE INTERIOR NORTH AND EAST BAY VALLEYS LATE
TONIGHT. HIGH CLOUDS WILL MOVE IN FROM THE SOUTH BY MONDAY MORNING.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF 5-6 MILE
VSBY IN HAZE.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 2:19 PM PST SUNDAY...LIGHT OFFSHORE FLOW NEAR THE
COAST WITH SOUTHERLY FLOW FURTHER OFFSHORE DUE TO HIGH PRESSURE
OVER THE GREAT BASIN OVER THE NEXT 24 HOURS. WINDS VEER TO THE
SOUTH TUESDAY WITH NORTHERLY WINDS RETURNING LATE WEDNESDAY.
NORTHWEST SWELL WILL GRADUALLY DIMINISH THROUGH THE UPCOMING WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: DYKEMA
AVIATION: W PI
MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA






000
FXUS66 KMTR 260457
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
857 PM PST SUN JAN 25 2015

.SYNOPSIS...SLIGHT COOLING IS FORECAST FOR MONDAY AS HIGH PRESSURE
OVER CALIFORNIA WEAKENS AND MOVES TO THE EAST. A WEAK STORM SYSTEM
WILL MOVE INTO SOUTHERN CALIFORNIA ON MONDAY NIGHT AND BRING A
CHANCE OF RAIN TO THE SOUTHERN PORTION OF OUR AREA ON MONDAY NIGHT
AND TUESDAY...MAINLY AREAS SOUTH OF SAN JOSE. DRY AND MILD WEATHER
IS THEN FORECAST FROM WEDNESDAY THROUGH THE END OF THE WEEK.

&&

.DISCUSSION...AS OF 8:55 PM PST SUNDAY...SLOW CLEARING OF FOG/LOW
CLOUDS ACROSS MUCH OF THE SF BAY AREA TODAY HELD TEMPERATURES
DOWN FOR MOST BAY AREA LOCATIONS. THERE WAS HOWEVER A LATE DAY
UPWARD SURGE IN TEMPS WHICH MANAGED TO PUSH RICHMOND`S HIGH TEMP
UP TO 69...ENOUGH TO TIE A RECORD THERE. FARTHER SOUTH...FROM
MONTEREY BAY SOUTHWARD...THE DAY STARTED OFF SUNNY AND
TEMPERATURES CLIMBED QUICKLY. FIVE LOCATIONS AROUND MONTEREY BAY
AND IN THE SALINAS VALLEY SET DAILY HIGH TEMPERATURE RECORDS THIS
AFTERNOON...INCLUDING AN 84 DEGREE HIGH AT THE MONTEREY CLIMATE
STATION AND AN 83 IN SANTA CRUZ. THE HIGH OF 83 IN SANTA CRUZ CAME
WITHIN ONE DEGREE OF MATCHING THE ALL-TIME JANUARY RECORD OF 84
SET JUST LAST YEAR (JANUARY 16 2014).

FOG AND LOW CLOUDS ARE LARGELY ABSENT FROM THE CENTRAL VALLEY THIS
EVENING...UNLIKE THE PAST TWO EVENINGS WHEN FOG BLANKETED THE
CENTRAL VALLEY...AND THEN SUBSEQUENTLY DEVELOPED INTO OUR NORTH
AND EAST BAY VALLEYS OVERNIGHT. HOWEVER...THE LOW LEVELS REMAIN
RELATIVELY MOIST AND WOULD EXPECT AREAS OF FOG TO REDEVELOP IN
THE N AND E BAY VALLEYS LATE TONIGHT AND PERSIST INTO MONDAY
MORNING.

EVENING WATER VAPOR SATELLITE IMAGERY SHOWS THE UNSEASONABLY
STRONG UPPER RIDGE OVER NORTHERN CA BEGINNING TO MOVE TO THE
EAST...A PROCESS THAT WILL CONTINUE INTO MONDAY. MEANWHILE A WEAK
UPPER LOW WEST OF BAJA WILL BEGIN TO LIFT TO THE NORTH. HIGH
CLOUDS ASSOCIATED WITH THIS LOW CENTER ARE DRIFTING WELL OUT AHEAD
OF IT...ALREADY BEGINNING TO OVERSPREAD THE SOUTHERN PART OF OUR
FORECAST AREA. THE COMBINATION OF INCREASING HIGH CLOUDS AND
THE WEAKENING UPPER RIDGE WILL RESULT IN SLIGHT COOLING ON
MONDAY...ESPECIALLY ACROSS THE SOUTHERN PART OF OUR AREA WHERE
HIGHS WILL BE FROM 5 TO 10 DEGREES COOLER COMPARED TO TODAY.

THE MODELS HAVE COME INTO REASONABLY GOOD AGREEMENT REGARDING THE
TRACK OF THE UPPER LOW AND ITS ASSOCIATED PRECIP. THE GENERAL IDEA
IS FOR THE LOW TO DRIFT DUE NORTH MONDAY AND MONDAY
NIGHT...APPROACHING POINT CONCEPTION BY LATE MONDAY NIGHT...WITH
THE LOW THEN TRANSITIONING TO AN OPEN WAVE AND SHEARING APART AS
IT TRAVERSES SOUTH-CENTRAL CALIFORNIA ON TUESDAY MORNING. THE NAM
CONTINUES TO BE THE MOST BULLISH OF THE MODELS IN REGARD TO PRECIP
POTENTIAL FROM THIS SYSTEM...FORECASTING LIGHT RAIN TO OVERSPREAD
ALL OF MONTEREY AND SAN BENITO COUNTIES ON MONDAY NIGHT...WITH
RAIN THEN REACHING AS FAR NORTH AS PALO ALTO AND LIVERMORE BY
DAYBREAK TUESDAY. THE 00Z GFS IS WETTER COMPARED TO ITS
PREVIOUS RUNS AND IS NOW SIMILAR TO THE NAM IN TERMS OF HOW
MUCH OF OUR FORECAST AREA WILL GET WET. HOWEVER...THE NAM
CONTINUES TO FORECAST GREATER RAINFALL AMOUNTS. THE NAM FORECASTS
IN EXCESS OF A HALF INCH OF RAIN ACROSS MUCH OF MONTEREY COUNTY ON
MONDAY NIGHT AND TUESDAY MORNING...WHILE THE GFS FORECASTS ONLY
ABOUT HALF THAT. PRECIPITABLE WATER VALUES MOVING NORTH OUT OF
BAJA ARE LACKLUSTER UP TO THIS POINT...SO IT SEEMS THE NAM MAY BE
OVERLY OPTIMISTIC. IN ANY CASE...IT`S BEGINNING TO LOOK LIKELY
THAT AT LEAST OUR SOUTHERN-MOST COUNTIES WILL GET SOME MEASURABLE
RAIN OUT OF THIS SYSTEM...AND POPS ACROSS MONTEREY AND SAN BENITO
COUNTIES MAY NEED TO BE RAISED DEPENDING ON WHAT THE 00Z ECMWF
SHOWS.

BY THE TIME THE SYSTEM CURRENTLY APPROACHING FROM THE SOUTH EXITS
TO OUR EAST LATE TUE...ANOTHER WEAK AND COMPLEX SYSTEM WILL BE
APPROACHING CALIFORNIA FROM THE WEST AND SOUTHWEST...DUE TO
ARRIVE OVER CA EITHER WEDNESDAY OR WEDNESDAY NIGHT. THE MODELS
AGREE THAT THIS MIDWEEK SYSTEM WILL BE TOO WEAK AND DISORGANIZED
TO PRODUCE PRECIP OVER OUR AREA AND WILL LIKELY ONLY GENERATE SOME
CLOUD COVER.

AN UPPER RIDGE OFFSHORE IS EXPECTED TO NOSE INLAND ACROSS NORTHERN
CA DURING THE SECOND HALF OF THE WEEK AND MAINTAIN A DRY WEATHER
PATTERN THROUGH THE END OF JANUARY.

&&

.AVIATION...AS OF 5:00 PM PST SUNDAY...OFFSHORE FLOW WEAKENING BUT
AIRMASS REMAINS DRY ENOUGH FOR VFR CONDITIONS. CENTRAL VALLEY FOG
MAY STILL IMPACT THE INTERIOR NORTH AND EAST BAY VALLEYS LATE
TONIGHT. HIGH CLOUDS WILL MOVE IN FROM THE SOUTH BY MONDAY MORNING.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF 5-6 MILE
VSBY IN HAZE.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 2:19 PM PST SUNDAY...LIGHT OFFSHORE FLOW NEAR THE
COAST WITH SOUTHERLY FLOW FURTHER OFFSHORE DUE TO HIGH PRESSURE
OVER THE GREAT BASIN OVER THE NEXT 24 HOURS. WINDS VEER TO THE
SOUTH TUESDAY WITH NORTHERLY WINDS RETURNING LATE WEDNESDAY.
NORTHWEST SWELL WILL GRADUALLY DIMINISH THROUGH THE UPCOMING WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: DYKEMA
AVIATION: W PI
MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
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000
FXUS66 KMTR 260113
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
513 PM PST SUN JAN 25 2015

.SYNOPSIS...DRY WEATHER AND UNSEASONABLY WARM TEMPERATURES WILL
PERSIST THROUGH MONDAY AS THE REGION REMAINS UNDER A STRONG RIDGE
OF HIGH PRESSURE. A WEAK STORM SYSTEM WILL THEN APPROACH SOUTHERN
CALIFORNIA MONDAY NIGHT INTO TUESDAY AND BRING A CHANCE OF LIGHT
PRECIPITATION TO THE CENTRAL COAST.

&&

.DISCUSSION...AS OF 2:48 PM PST SUNDAY...FOG HAS CLEARED FROM ALL
AREAS IN THE CWA...BUT EVEN WITH AFTERNOON SUNSHINE...AREAS AROUND THE
GREATER SAN FRANCISCO BAY HAVE BEEN VERY SLOW TO WARM UP. THE
COOLEST LOCATION AS OF 2 PM WAS NAPA AIRPORT AT A CLAMMY 54
DEGREES. OAKLAND AND HAYWARD ARE 13 AND 15 DEGREES COOLER THAN
YESTERDAY AT THIS TIME...AND ARE STRUGGLING TO GET OUT OF THE 50S.
THE DIFFERENCE IS IN THE WIND. YESTERDAY MUCH OF THE AREA
EXPERIENCED DOWN-SLOPING OFFSHORE WINDS WHILE TODAY WINDS HAVE
SWITCHED TO A LIGHT SEA BREEZE. MEANWHILE...LOCATIONS FROM THE
MONTEREY BAY SOUTHWARD HAVE WARMED TO THE THE UPPER 70S AND 80S.
CURRENTLY WATSONVILLE AND SALINAS ARE REPORTING 80 AND 81 DEGREES
RESPECTIVELY...AND THE HIGH SO FAR TODAY AT THE WEATHER OFFICE IN
MONTEREY HAS BEEN 77 DEGREES. RIGHT NOW THE ONLY LOCATIONS THAT
ARE IN JEOPARDY OF BREAKING HIGH TEMPERATURE RECORDS ARE IN
MONTEREY OR SANTA CRUZ COUNTIES. 2 PM TEMPERATURES AT SFO AND MRY
AIRPORTS ARE 23 DEGREES APART: 57 VERSUS 80.

BEGINNING TOMORROW THE UPPER RIDGE WILL BEGIN TO WEAKEN AND SHIFT
EASTWARD AS A DISTURBANCE OVER SOUTHERN CALIFORNIA AND ARIZONA
BEGINS TO MOVE TO THE NORTH AND INTO CENTRAL CALIFORNIA. THIS IS
EXPECTED TO ADVECT SOME MOISTURE INTO THE SOUTHERN ZONES...THUS A
SLIGHT CHANCE OF LIGHT RAIN IS POSSIBLE ACROSS MAINLY THE SOUTHERN
HALF OF THE DISTRICT ON TUESDAY MORNING. BY LATER IN THE DAY THE
DISTURBANCE WILL EJECT TO THE EAST AND SHOWER CHANCES WILL END.
DRY AND MILD CONDITIONS ARE INDICATED FOR THE REST OF THE WEEK AS
THE AREA REMAINS UNDER WEAK HIGH PRESSURE. TEMPERATURES ARE
EXPECTED TO WARM AGAIN BY THE END OF THE WEEK.

&&

.AVIATION...AS OF 5:00 PM PST SUNDAY...OFFSHORE FLOW WEAKENING BUT
AIRMASS REMAINS DRY ENOUGH FOR VFR CONDITIONS. CENTRAL VALLEY FOG
MAY STILL IMPACT THE INTERIOR NORTH AND EAST BAY VALLEYS LATE
TONIGHT. HIGH CLOUDS WILL MOVE IN FROM THE SOUTH BY MONDAY MORNING.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF 5-6 MILE
VSBY IN HAZE.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 2:19 PM PST SUNDAY...LIGHT OFFSHORE FLOW NEAR THE
COAST WITH SOUTHERLY FLOW FURTHER OFFSHORE DUE TO HIGH PRESSURE
OVER THE GREAT BASIN OVER THE NEXT 24 HOURS. WINDS VEER TO THE
SOUTH TUESDAY WITH NORTHERLY WINDS RETURNING LATE WEDNESDAY.
NORTHWEST SWELL WILL GRADUALLY DIMINISH THROUGH THE UPCOMING WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: SIMS
AVIATION: W PI
MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA






000
FXUS66 KMTR 260113
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
513 PM PST SUN JAN 25 2015

.SYNOPSIS...DRY WEATHER AND UNSEASONABLY WARM TEMPERATURES WILL
PERSIST THROUGH MONDAY AS THE REGION REMAINS UNDER A STRONG RIDGE
OF HIGH PRESSURE. A WEAK STORM SYSTEM WILL THEN APPROACH SOUTHERN
CALIFORNIA MONDAY NIGHT INTO TUESDAY AND BRING A CHANCE OF LIGHT
PRECIPITATION TO THE CENTRAL COAST.

&&

.DISCUSSION...AS OF 2:48 PM PST SUNDAY...FOG HAS CLEARED FROM ALL
AREAS IN THE CWA...BUT EVEN WITH AFTERNOON SUNSHINE...AREAS AROUND THE
GREATER SAN FRANCISCO BAY HAVE BEEN VERY SLOW TO WARM UP. THE
COOLEST LOCATION AS OF 2 PM WAS NAPA AIRPORT AT A CLAMMY 54
DEGREES. OAKLAND AND HAYWARD ARE 13 AND 15 DEGREES COOLER THAN
YESTERDAY AT THIS TIME...AND ARE STRUGGLING TO GET OUT OF THE 50S.
THE DIFFERENCE IS IN THE WIND. YESTERDAY MUCH OF THE AREA
EXPERIENCED DOWN-SLOPING OFFSHORE WINDS WHILE TODAY WINDS HAVE
SWITCHED TO A LIGHT SEA BREEZE. MEANWHILE...LOCATIONS FROM THE
MONTEREY BAY SOUTHWARD HAVE WARMED TO THE THE UPPER 70S AND 80S.
CURRENTLY WATSONVILLE AND SALINAS ARE REPORTING 80 AND 81 DEGREES
RESPECTIVELY...AND THE HIGH SO FAR TODAY AT THE WEATHER OFFICE IN
MONTEREY HAS BEEN 77 DEGREES. RIGHT NOW THE ONLY LOCATIONS THAT
ARE IN JEOPARDY OF BREAKING HIGH TEMPERATURE RECORDS ARE IN
MONTEREY OR SANTA CRUZ COUNTIES. 2 PM TEMPERATURES AT SFO AND MRY
AIRPORTS ARE 23 DEGREES APART: 57 VERSUS 80.

BEGINNING TOMORROW THE UPPER RIDGE WILL BEGIN TO WEAKEN AND SHIFT
EASTWARD AS A DISTURBANCE OVER SOUTHERN CALIFORNIA AND ARIZONA
BEGINS TO MOVE TO THE NORTH AND INTO CENTRAL CALIFORNIA. THIS IS
EXPECTED TO ADVECT SOME MOISTURE INTO THE SOUTHERN ZONES...THUS A
SLIGHT CHANCE OF LIGHT RAIN IS POSSIBLE ACROSS MAINLY THE SOUTHERN
HALF OF THE DISTRICT ON TUESDAY MORNING. BY LATER IN THE DAY THE
DISTURBANCE WILL EJECT TO THE EAST AND SHOWER CHANCES WILL END.
DRY AND MILD CONDITIONS ARE INDICATED FOR THE REST OF THE WEEK AS
THE AREA REMAINS UNDER WEAK HIGH PRESSURE. TEMPERATURES ARE
EXPECTED TO WARM AGAIN BY THE END OF THE WEEK.

&&

.AVIATION...AS OF 5:00 PM PST SUNDAY...OFFSHORE FLOW WEAKENING BUT
AIRMASS REMAINS DRY ENOUGH FOR VFR CONDITIONS. CENTRAL VALLEY FOG
MAY STILL IMPACT THE INTERIOR NORTH AND EAST BAY VALLEYS LATE
TONIGHT. HIGH CLOUDS WILL MOVE IN FROM THE SOUTH BY MONDAY MORNING.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF 5-6 MILE
VSBY IN HAZE.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 2:19 PM PST SUNDAY...LIGHT OFFSHORE FLOW NEAR THE
COAST WITH SOUTHERLY FLOW FURTHER OFFSHORE DUE TO HIGH PRESSURE
OVER THE GREAT BASIN OVER THE NEXT 24 HOURS. WINDS VEER TO THE
SOUTH TUESDAY WITH NORTHERLY WINDS RETURNING LATE WEDNESDAY.
NORTHWEST SWELL WILL GRADUALLY DIMINISH THROUGH THE UPCOMING WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

$$

PUBLIC FORECAST: SIMS
AVIATION: W PI
MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA







000
FXUS66 KMTR 252248
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
248 PM PST SUN JAN 25 2015

.SYNOPSIS...DRY WEATHER AND UNSEASONABLY WARM TEMPERATURES WILL
PERSIST THROUGH MONDAY AS THE REGION REMAINS UNDER A STRONG RIDGE
OF HIGH PRESSURE. A WEAK STORM SYSTEM WILL THEN APPROACH SOUTHERN
CALIFORNIA MONDAY NIGHT INTO TUESDAY AND BRING A CHANCE OF LIGHT
PRECIPITATION TO THE CENTRAL COAST.

&&

.DISCUSSION...AS OF 2:48 PM PST SUNDAY...FOG HAS CLEARED FROM ALL
AREAS IN THE CWA...BUT EVEN WITH AFTERNOON SUNSHINE...AREAS AROUND THE
GREATER SAN FRANCISCO BAY HAVE BEEN VERY SLOW TO WARM UP. THE
COOLEST LOCATION AS OF 2 PM WAS NAPA AIRPORT AT A CLAMMY 54
DEGREES. OAKLAND AND HAYWARD ARE 13 AND 15 DEGREES COOLER THAN
YESTERDAY AT THIS TIME...AND ARE STRUGGLING TO GET OUT OF THE 50S.
THE DIFFERENCE IS IN THE WIND. YESTERDAY MUCH OF THE AREA
EXPERIENCED DOWN-SLOPING OFFSHORE WINDS WHILE TODAY WINDS HAVE
SWITCHED TO A LIGHT SEA BREEZE. MEANWHILE...LOCATIONS FROM THE
MONTEREY BAY SOUTHWARD HAVE WARMED TO THE THE UPPER 70S AND 80S.
CURRENTLY WATSONVILLE AND SALINAS ARE REPORTING 80 AND 81 DEGREES
RESPECTIVELY...AND THE HIGH SO FAR TODAY AT THE WEATHER OFFICE IN
MONTEREY HAS BEEN 77 DEGREES. RIGHT NOW THE ONLY LOCATIONS THAT
ARE IN JEOPARDY OF BREAKING HIGH TEMPERATURE RECORDS ARE IN
MONTEREY OR SANTA CRUZ COUNTIES. 2 PM TEMPERATURES AT SFO AND MRY
AIRPORTS ARE 23 DEGREES APART: 57 VERSUS 80.

BEGINNING TOMORROW THE UPPER RIDGE WILL BEGIN TO WEAKEN AND SHIFT
EASTWARD AS A DISTURBANCE OVER SOUTHERN CALIFORNIA AND ARIZONA
BEGINS TO MOVE TO THE NORTH AND INTO CENTRAL CALIFORNIA. THIS IS
EXPECTED TO ADVECT SOME MOISTURE INTO THE SOUTHERN ZONES...THUS A
SLIGHT CHANCE OF LIGHT RAIN IS POSSIBLE ACROSS MAINLY THE SOUTHERN
HALF OF THE DISTRICT ON TUESDAY MORNING. BY LATER IN THE DAY THE
DISTURBANCE WILL EJECT TO THE EAST AND SHOWER CHANCES WILL END.
DRY AND MILD CONDITIONS ARE INDICATED FOR THE REST OF THE WEEK AS
THE AREA REMAINS UNDER WEAK HIGH PRESSURE. TEMPERATURES ARE
EXPECTED TO WARM AGAIN BY THE END OF THE WEEK.

&&

.AVIATION...AS OF 9:50 AM PST SUNDAY... PORTIONS OF THE NORTH AND
EAST BAY INTERIOR VALLEYS UNDER LOW CLOUDS AND FOG THIS MORNING.
THESE AREAS SHOULD IMPROVE AROUND 19Z HOWEVER LINGERING HZ WILL
PERSIST THROUGH THE DAY. OTHERWISE... VFR WITH LIGHT OFFSHORE
WINDS. BKN TO OVC HIGH CLOUDS WILL MOVE IN FROM THE SOUTH A FEW
HOURS BEFORE SUNRISE MONDAY.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF HAZE.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT SE WINDS EXCEPT UP TO
10-12 KNOTS AT KSNS.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 2:19 PM PST SUNDAY...LIGHT OFFSHORE FLOW NEAR THE
COAST WITH SOUTHERLY FLOW FURTHER OFFSHORE DUE TO HIGH PRESSURE
OVER THE GREAT BASIN OVER THE NEXT 24 HOURS. WINDS VEER TO THE
SOUTH TUESDAY WITH NORTHERLY WINDS RETURNING LATE WEDNESDAY.
NORTHWEST SWELL WILL GRADUALLY DIMINISH THROUGH THE UPCOMING WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE

&&

$$

PUBLIC FORECAST: SIMS
AVIATION/MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA









000
FXUS66 KMTR 252248
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
248 PM PST SUN JAN 25 2015

.SYNOPSIS...DRY WEATHER AND UNSEASONABLY WARM TEMPERATURES WILL
PERSIST THROUGH MONDAY AS THE REGION REMAINS UNDER A STRONG RIDGE
OF HIGH PRESSURE. A WEAK STORM SYSTEM WILL THEN APPROACH SOUTHERN
CALIFORNIA MONDAY NIGHT INTO TUESDAY AND BRING A CHANCE OF LIGHT
PRECIPITATION TO THE CENTRAL COAST.

&&

.DISCUSSION...AS OF 2:48 PM PST SUNDAY...FOG HAS CLEARED FROM ALL
AREAS IN THE CWA...BUT EVEN WITH AFTERNOON SUNSHINE...AREAS AROUND THE
GREATER SAN FRANCISCO BAY HAVE BEEN VERY SLOW TO WARM UP. THE
COOLEST LOCATION AS OF 2 PM WAS NAPA AIRPORT AT A CLAMMY 54
DEGREES. OAKLAND AND HAYWARD ARE 13 AND 15 DEGREES COOLER THAN
YESTERDAY AT THIS TIME...AND ARE STRUGGLING TO GET OUT OF THE 50S.
THE DIFFERENCE IS IN THE WIND. YESTERDAY MUCH OF THE AREA
EXPERIENCED DOWN-SLOPING OFFSHORE WINDS WHILE TODAY WINDS HAVE
SWITCHED TO A LIGHT SEA BREEZE. MEANWHILE...LOCATIONS FROM THE
MONTEREY BAY SOUTHWARD HAVE WARMED TO THE THE UPPER 70S AND 80S.
CURRENTLY WATSONVILLE AND SALINAS ARE REPORTING 80 AND 81 DEGREES
RESPECTIVELY...AND THE HIGH SO FAR TODAY AT THE WEATHER OFFICE IN
MONTEREY HAS BEEN 77 DEGREES. RIGHT NOW THE ONLY LOCATIONS THAT
ARE IN JEOPARDY OF BREAKING HIGH TEMPERATURE RECORDS ARE IN
MONTEREY OR SANTA CRUZ COUNTIES. 2 PM TEMPERATURES AT SFO AND MRY
AIRPORTS ARE 23 DEGREES APART: 57 VERSUS 80.

BEGINNING TOMORROW THE UPPER RIDGE WILL BEGIN TO WEAKEN AND SHIFT
EASTWARD AS A DISTURBANCE OVER SOUTHERN CALIFORNIA AND ARIZONA
BEGINS TO MOVE TO THE NORTH AND INTO CENTRAL CALIFORNIA. THIS IS
EXPECTED TO ADVECT SOME MOISTURE INTO THE SOUTHERN ZONES...THUS A
SLIGHT CHANCE OF LIGHT RAIN IS POSSIBLE ACROSS MAINLY THE SOUTHERN
HALF OF THE DISTRICT ON TUESDAY MORNING. BY LATER IN THE DAY THE
DISTURBANCE WILL EJECT TO THE EAST AND SHOWER CHANCES WILL END.
DRY AND MILD CONDITIONS ARE INDICATED FOR THE REST OF THE WEEK AS
THE AREA REMAINS UNDER WEAK HIGH PRESSURE. TEMPERATURES ARE
EXPECTED TO WARM AGAIN BY THE END OF THE WEEK.

&&

.AVIATION...AS OF 9:50 AM PST SUNDAY... PORTIONS OF THE NORTH AND
EAST BAY INTERIOR VALLEYS UNDER LOW CLOUDS AND FOG THIS MORNING.
THESE AREAS SHOULD IMPROVE AROUND 19Z HOWEVER LINGERING HZ WILL
PERSIST THROUGH THE DAY. OTHERWISE... VFR WITH LIGHT OFFSHORE
WINDS. BKN TO OVC HIGH CLOUDS WILL MOVE IN FROM THE SOUTH A FEW
HOURS BEFORE SUNRISE MONDAY.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF HAZE.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT SE WINDS EXCEPT UP TO
10-12 KNOTS AT KSNS.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 2:19 PM PST SUNDAY...LIGHT OFFSHORE FLOW NEAR THE
COAST WITH SOUTHERLY FLOW FURTHER OFFSHORE DUE TO HIGH PRESSURE
OVER THE GREAT BASIN OVER THE NEXT 24 HOURS. WINDS VEER TO THE
SOUTH TUESDAY WITH NORTHERLY WINDS RETURNING LATE WEDNESDAY.
NORTHWEST SWELL WILL GRADUALLY DIMINISH THROUGH THE UPCOMING WEEK.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE

&&

$$

PUBLIC FORECAST: SIMS
AVIATION/MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA








000
FXUS66 KMTR 251752
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
952 AM PST SUN JAN 25 2015

.SYNOPSIS...DRY WEATHER AND UNSEASONABLY WARM TEMPERATURES WILL
PERSIST THROUGH MONDAY AS THE REGION REMAINS UNDER THE INFLUENCE
OF A STRONG RIDGE OF HIGH PRESSURE. A WEAK STORM SYSTEM WILL THEN
APPROACH SOUTHERN CALIFORNIA MONDAY NIGHT INTO TUESDAY AND BRING A
CHANCE OF LIGHT PRECIPITATION TO THE CENTRAL COAST.

&&

.DISCUSSION...AS OF 8:52 AM PST SUNDAY...VISIBLE SATELLITE IMAGERY
SHOWS LOW CLOUDS AND FOG HAVE SPREAD FROM THE CENTRAL VALLEY INTO THE
EAST BAY AND NORTH BAY VALLEYS. CURRENTLY ONLY SANTA ROSA AIRPORT
IS INDICATING DENSE FOG (1/4 MILE)...WITH 1 TO 3 MILES AT
CONCORD...LIVERMORE AND NAPA AIRPORTS. EXPECT THESE CONDITIONS TO
SLOWLY IMPROVE THROUGH THE MORNING...BUT IN CURRENTLY FOGGY/CLOUDY
AREAS THERE WILL NATURALLY BE A DELAY TO THE DAYTIME HEATING.

HIGH PRESSURE ALOFT AND OFFSHORE SURFACE FLOW WILL LEAD TO ANOTHER
WARM DAY ACROSS MUCH OF THE DISTRICT WITH HIGHS FORECAST TO RANGE
FROM THE MID 60S TO AROUND 80. NEAR RECORD WARMTH IS AGAIN
EXPECTED FOR MUCH OF THE REGION AS TEMPERATURES WARM INTO THE 70S
TO NEAR 80 SOUTH OF THE GREATER SAN FRANCISCO BAY AREA. LIGHT
OFFSHORE WINDS ACROSS THE SAN FRANCISCO BAY SHOULD HELP TO KEEP
TEMPERATURES IN THE MID TO UPPER 60S ACROSS THAT AREA WITH
PORTIONS OF THE EAST BAY AND NORTH BAY REACHING INTO THE LOWER
70S. THE WARMEST AREAS WILL BE ACROSS INLAND MONTEREY AND SAN
BENITO COUNTIES WHERE LOWER 80S WILL BE POSSIBLE.

EARLY IN THE WEEK THE UPPER RIDGE WILL BEGIN TO SHIFT EASTWARD AS
A DISTURBANCE OVER SOUTHERN CALIFORNIA AND ARIZONA BEGINS TO MOVE
TO THE NORTH. THIS COULD ADVECT SOME MOISTURE INTO THE SOUTHERN
ZONES...THUS A SLIGHT CHANCE OF LIGHT RAIN IS POSSIBLE ACROSS
MAINLY THE SOUTHERN HALF OF THE DISTRICT...AND MOST LIKELY
MONTEREY AND SAN BENITO COUNTIES ON TUESDAY MORNING. BY LATER IN
THE DAY THE DISTURBANCE WILL EJECT TO THE EAST AND SHOWER CHANCES
WILL END. DRY AND MILD CONDITIONS ARE INDICATED FOR THE REST OF
THE WEEK AS THE AREA REMAINS UNDER WEAK HIGH PRESSURE.

&&

.AVIATION...AS OF 9:50 AM PST SUNDAY... PORTIONS OF THE NORTH AND
EAST BAY INTERIOR VALLEYS UNDER LOW CLOUDS AND FOG THIS MORNING.
THESE AREAS SHOULD IMPROVE AROUND 19Z HOWEVER LINGERING HZ WILL
PERSIST THROUGH THE DAY. OTHERWISE... VFR WITH LIGHT OFFSHORE
WINDS. BKN TO OVC HIGH CLOUDS WILL MOVE IN FROM THE SOUTH A FEW
HOURS BEFORE SUNRISE MONDAY.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF HAZE.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT SE WINDS EXCEPT UP TO
10-12 KNOTS AT KSNS.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 09:46 AM PST SUNDAY...HIGH PRESSURE SHIFTS
DOWNSTREAM AND WEAKENS OVER THE COASTAL WATERS THROUGH THE NEXT 24
HOURS. OFFSHORE FLOW WILL PERSIST INTO EARLY NEXT WEEK ALONG THE
COASTLINE WITH SOUTHERLY FLOW PREVAILING FURTHER OFFSHORE.
NORTHERLY WINDS RETURN LATE WEDNESDAY/EARLY THURSDAY. THE LARGE
LONG PERIOD SWELL HAS TAPERED OFF BUT WILL CONTINUE TO IMPACT THE
COASTAL WATERS THROUGH THIS AFTERNOON. THIS LONG PERIOD SWELL WILL
RESULT IN LARGE BREAKERS NEAR BARS...SHOALS AND JETTIES LEADING TO
HAZARDOUS CONDITIONS ALONG THE COAST.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...HIGH SURF ADVISORY...ENTIRE COAST FROM SONOMA COUNTY
                                  THROUGH MONTEREY COUNTY THRU 3PM

&&

$$

PUBLIC FORECAST: SIMS
AVIATION/MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

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WWW.TWITTER.COM/NWSBAYAREA
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000
FXUS66 KMTR 251752
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
952 AM PST SUN JAN 25 2015

.SYNOPSIS...DRY WEATHER AND UNSEASONABLY WARM TEMPERATURES WILL
PERSIST THROUGH MONDAY AS THE REGION REMAINS UNDER THE INFLUENCE
OF A STRONG RIDGE OF HIGH PRESSURE. A WEAK STORM SYSTEM WILL THEN
APPROACH SOUTHERN CALIFORNIA MONDAY NIGHT INTO TUESDAY AND BRING A
CHANCE OF LIGHT PRECIPITATION TO THE CENTRAL COAST.

&&

.DISCUSSION...AS OF 8:52 AM PST SUNDAY...VISIBLE SATELLITE IMAGERY
SHOWS LOW CLOUDS AND FOG HAVE SPREAD FROM THE CENTRAL VALLEY INTO THE
EAST BAY AND NORTH BAY VALLEYS. CURRENTLY ONLY SANTA ROSA AIRPORT
IS INDICATING DENSE FOG (1/4 MILE)...WITH 1 TO 3 MILES AT
CONCORD...LIVERMORE AND NAPA AIRPORTS. EXPECT THESE CONDITIONS TO
SLOWLY IMPROVE THROUGH THE MORNING...BUT IN CURRENTLY FOGGY/CLOUDY
AREAS THERE WILL NATURALLY BE A DELAY TO THE DAYTIME HEATING.

HIGH PRESSURE ALOFT AND OFFSHORE SURFACE FLOW WILL LEAD TO ANOTHER
WARM DAY ACROSS MUCH OF THE DISTRICT WITH HIGHS FORECAST TO RANGE
FROM THE MID 60S TO AROUND 80. NEAR RECORD WARMTH IS AGAIN
EXPECTED FOR MUCH OF THE REGION AS TEMPERATURES WARM INTO THE 70S
TO NEAR 80 SOUTH OF THE GREATER SAN FRANCISCO BAY AREA. LIGHT
OFFSHORE WINDS ACROSS THE SAN FRANCISCO BAY SHOULD HELP TO KEEP
TEMPERATURES IN THE MID TO UPPER 60S ACROSS THAT AREA WITH
PORTIONS OF THE EAST BAY AND NORTH BAY REACHING INTO THE LOWER
70S. THE WARMEST AREAS WILL BE ACROSS INLAND MONTEREY AND SAN
BENITO COUNTIES WHERE LOWER 80S WILL BE POSSIBLE.

EARLY IN THE WEEK THE UPPER RIDGE WILL BEGIN TO SHIFT EASTWARD AS
A DISTURBANCE OVER SOUTHERN CALIFORNIA AND ARIZONA BEGINS TO MOVE
TO THE NORTH. THIS COULD ADVECT SOME MOISTURE INTO THE SOUTHERN
ZONES...THUS A SLIGHT CHANCE OF LIGHT RAIN IS POSSIBLE ACROSS
MAINLY THE SOUTHERN HALF OF THE DISTRICT...AND MOST LIKELY
MONTEREY AND SAN BENITO COUNTIES ON TUESDAY MORNING. BY LATER IN
THE DAY THE DISTURBANCE WILL EJECT TO THE EAST AND SHOWER CHANCES
WILL END. DRY AND MILD CONDITIONS ARE INDICATED FOR THE REST OF
THE WEEK AS THE AREA REMAINS UNDER WEAK HIGH PRESSURE.

&&

.AVIATION...AS OF 9:50 AM PST SUNDAY... PORTIONS OF THE NORTH AND
EAST BAY INTERIOR VALLEYS UNDER LOW CLOUDS AND FOG THIS MORNING.
THESE AREAS SHOULD IMPROVE AROUND 19Z HOWEVER LINGERING HZ WILL
PERSIST THROUGH THE DAY. OTHERWISE... VFR WITH LIGHT OFFSHORE
WINDS. BKN TO OVC HIGH CLOUDS WILL MOVE IN FROM THE SOUTH A FEW
HOURS BEFORE SUNRISE MONDAY.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO EXCEPT AREAS OF HAZE.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT SE WINDS EXCEPT UP TO
10-12 KNOTS AT KSNS.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 09:46 AM PST SUNDAY...HIGH PRESSURE SHIFTS
DOWNSTREAM AND WEAKENS OVER THE COASTAL WATERS THROUGH THE NEXT 24
HOURS. OFFSHORE FLOW WILL PERSIST INTO EARLY NEXT WEEK ALONG THE
COASTLINE WITH SOUTHERLY FLOW PREVAILING FURTHER OFFSHORE.
NORTHERLY WINDS RETURN LATE WEDNESDAY/EARLY THURSDAY. THE LARGE
LONG PERIOD SWELL HAS TAPERED OFF BUT WILL CONTINUE TO IMPACT THE
COASTAL WATERS THROUGH THIS AFTERNOON. THIS LONG PERIOD SWELL WILL
RESULT IN LARGE BREAKERS NEAR BARS...SHOALS AND JETTIES LEADING TO
HAZARDOUS CONDITIONS ALONG THE COAST.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...HIGH SURF ADVISORY...ENTIRE COAST FROM SONOMA COUNTY
                                  THROUGH MONTEREY COUNTY THRU 3PM

&&

$$

PUBLIC FORECAST: SIMS
AVIATION/MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA







000
FXUS66 KMTR 251652
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
852 AM PST SUN JAN 25 2015

.SYNOPSIS...DRY WEATHER AND UNSEASONABLY WARM TEMPERATURES WILL
PERSIST THROUGH MONDAY AS THE REGION REMAINS UNDER THE INFLUENCE
OF A STRONG RIDGE OF HIGH PRESSURE. A WEAK STORM SYSTEM WILL THEN
APPROACH SOUTHERN CALIFORNIA MONDAY NIGHT INTO TUESDAY AND BRING A
CHANCE OF LIGHT PRECIPITATION TO THE CENTRAL COAST.

&&

.DISCUSSION...AS OF 8:52 AM PST SUNDAY...VISIBLE SATELLITE IMAGERY
SHOWS LOW CLOUDS AND FOG HAVE SPREAD FROM THE CENTRAL VALLEY INTO THE
EAST BAY AND NORTH BAY VALLEYS. CURRENTLY ONLY SANTA ROSA AIRPORT
IS INDICATING DENSE FOG (1/4 MILE)...WITH 1 TO 3 MILES AT
CONCORD...LIVERMORE AND NAPA AIRPORTS. EXPECT THESE CONDITIONS TO
SLOWLY IMPROVE THROUGH THE MORNING...BUT IN CURRENTLY FOGGY/CLOUDY
AREAS THERE WILL NATURALLY BE A DELAY TO THE DAYTIME HEATING.

HIGH PRESSURE ALOFT AND OFFSHORE SURFACE FLOW WILL LEAD TO ANOTHER
WARM DAY ACROSS MUCH OF THE DISTRICT WITH HIGHS FORECAST TO RANGE
FROM THE MID 60S TO AROUND 80. NEAR RECORD WARMTH IS AGAIN
EXPECTED FOR MUCH OF THE REGION AS TEMPERATURES WARM INTO THE 70S
TO NEAR 80 SOUTH OF THE GREATER SAN FRANCISCO BAY AREA. LIGHT
OFFSHORE WINDS ACROSS THE SAN FRANCISCO BAY SHOULD HELP TO KEEP
TEMPERATURES IN THE MID TO UPPER 60S ACROSS THAT AREA WITH
PORTIONS OF THE EAST BAY AND NORTH BAY REACHING INTO THE LOWER
70S. THE WARMEST AREAS WILL BE ACROSS INLAND MONTEREY AND SAN
BENITO COUNTIES WHERE LOWER 80S WILL BE POSSIBLE.

EARLY IN THE WEEK THE UPPER RIDGE WILL BEGIN TO SHIFT EASTWARD AS
A DISTURBANCE OVER SOUTHERN CALIFORNIA AND ARIZONA BEGINS TO MOVE
TO THE NORTH. THIS COULD ADVECT SOME MOISTURE INTO THE SOUTHERN
ZONES...THUS A SLIGHT CHANCE OF LIGHT RAIN IS POSSIBLE ACROSS
MAINLY THE SOUTHERN HALF OF THE DISTRICT...AND MOST LIKELY
MONTEREY AND SAN BENITO COUNTIES ON TUESDAY MORNING. BY LATER IN
THE DAY THE DISTURBANCE WILL EJECT TO THE EAST AND SHOWER CHANCES
WILL END. DRY AND MILD CONDITIONS ARE INDICATED FOR THE REST OF
THE WEEK AS THE AREA REMAINS UNDER WEAK HIGH PRESSURE.

&&

.AVIATION...AS OF 3:40 AM PST SUNDAY...LIGHT OFFSHORE WINDS.
THERE`LL BE AREAS OF FOG OR HAZE IN THE EAST AND NORTH
BAYS...MAINLY DURING THE LATE NIGHT AND/OR MORNING HOURS.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT SE WINDS EXCEPT UP TO
10-12 KNOTS AT KSNS.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 8:24 AM PST SUNDAY...HIGH PRESSURE SHIFTS
DOWNSTREAM AND WEAKENS OVER THE COASTAL WATERS THROUGH THE NEXT 24
HOURS. OFFSHORE FLOW WILL PERSIST INTO EARLY NEXT WEEK ALONG THE
COASTLINE WITH SOUTHERLY FLOW PREVAILING FURTHER OFFSHORE.
NORTHERLY WINDS RETURN LATE WEDNESDAY/EARLY THURSDAY. THE LARGE
LONG PERIOD SWELL HAS TAPERED OFF BUT WILL CONTINUE TO IMPACT THE
COASTAL WATERS THROUGH THIS AFTERNOON. THIS LONG PERIOD SWELL WILL
RESULT IN LARGE BREAKERS NEAR BARS...SHOALS AND JETTIES LEADING TO
HAZARDOUS CONDITIONS ALONG THE COAST.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...HIGH SURF ADVISORY...COASTAL SECTIONS FROM SONOMA COUNTY
             THROUGH MONTEREY COUNTY.

&&

$$

PUBLIC FORECAST: SIMS
AVIATION: CANEPA
MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
WWW.YOUTUBE.COM/NWSBAYAREA










000
FXUS66 KMTR 251652
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
852 AM PST SUN JAN 25 2015

.SYNOPSIS...DRY WEATHER AND UNSEASONABLY WARM TEMPERATURES WILL
PERSIST THROUGH MONDAY AS THE REGION REMAINS UNDER THE INFLUENCE
OF A STRONG RIDGE OF HIGH PRESSURE. A WEAK STORM SYSTEM WILL THEN
APPROACH SOUTHERN CALIFORNIA MONDAY NIGHT INTO TUESDAY AND BRING A
CHANCE OF LIGHT PRECIPITATION TO THE CENTRAL COAST.

&&

.DISCUSSION...AS OF 8:52 AM PST SUNDAY...VISIBLE SATELLITE IMAGERY
SHOWS LOW CLOUDS AND FOG HAVE SPREAD FROM THE CENTRAL VALLEY INTO THE
EAST BAY AND NORTH BAY VALLEYS. CURRENTLY ONLY SANTA ROSA AIRPORT
IS INDICATING DENSE FOG (1/4 MILE)...WITH 1 TO 3 MILES AT
CONCORD...LIVERMORE AND NAPA AIRPORTS. EXPECT THESE CONDITIONS TO
SLOWLY IMPROVE THROUGH THE MORNING...BUT IN CURRENTLY FOGGY/CLOUDY
AREAS THERE WILL NATURALLY BE A DELAY TO THE DAYTIME HEATING.

HIGH PRESSURE ALOFT AND OFFSHORE SURFACE FLOW WILL LEAD TO ANOTHER
WARM DAY ACROSS MUCH OF THE DISTRICT WITH HIGHS FORECAST TO RANGE
FROM THE MID 60S TO AROUND 80. NEAR RECORD WARMTH IS AGAIN
EXPECTED FOR MUCH OF THE REGION AS TEMPERATURES WARM INTO THE 70S
TO NEAR 80 SOUTH OF THE GREATER SAN FRANCISCO BAY AREA. LIGHT
OFFSHORE WINDS ACROSS THE SAN FRANCISCO BAY SHOULD HELP TO KEEP
TEMPERATURES IN THE MID TO UPPER 60S ACROSS THAT AREA WITH
PORTIONS OF THE EAST BAY AND NORTH BAY REACHING INTO THE LOWER
70S. THE WARMEST AREAS WILL BE ACROSS INLAND MONTEREY AND SAN
BENITO COUNTIES WHERE LOWER 80S WILL BE POSSIBLE.

EARLY IN THE WEEK THE UPPER RIDGE WILL BEGIN TO SHIFT EASTWARD AS
A DISTURBANCE OVER SOUTHERN CALIFORNIA AND ARIZONA BEGINS TO MOVE
TO THE NORTH. THIS COULD ADVECT SOME MOISTURE INTO THE SOUTHERN
ZONES...THUS A SLIGHT CHANCE OF LIGHT RAIN IS POSSIBLE ACROSS
MAINLY THE SOUTHERN HALF OF THE DISTRICT...AND MOST LIKELY
MONTEREY AND SAN BENITO COUNTIES ON TUESDAY MORNING. BY LATER IN
THE DAY THE DISTURBANCE WILL EJECT TO THE EAST AND SHOWER CHANCES
WILL END. DRY AND MILD CONDITIONS ARE INDICATED FOR THE REST OF
THE WEEK AS THE AREA REMAINS UNDER WEAK HIGH PRESSURE.

&&

.AVIATION...AS OF 3:40 AM PST SUNDAY...LIGHT OFFSHORE WINDS.
THERE`LL BE AREAS OF FOG OR HAZE IN THE EAST AND NORTH
BAYS...MAINLY DURING THE LATE NIGHT AND/OR MORNING HOURS.

VICINITY OF KSFO...VFR. LIGHT OFFSHORE WINDS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT SE WINDS EXCEPT UP TO
10-12 KNOTS AT KSNS.

&&

.CLIMATE...RECORD HIGH TEMPERATURES ARE POSSIBLE OVER THE AREA TODAY.
HERE IS THE LIST OF RECORDS ALONG WITH THE JANUARY WARMEST HIGH
TEMPERATURE READINGS AND THE LATEST YEAR THEY OCCURRED.

SF BAY AREA...

LOCATION       TODAY (1/25)  JANUARY WARMEST
KENTFIELD        77/1934       79/1962
SAN RAFAEL       70/2014       82/1962
NAPA             83/1899       85/1962
SAN FRANCISCO    74/1899       79/1962
SFO AIRPORT      68/2011       73/2014
OAKLAND          73/2014       78/2014
OAK AIRPORT      70/2014       77/2014
RICHMOND         69/2011       76/1962
LIVERMORE        73/1911       77/1911
MOUNTAIN VIEW    72/2014       76/1948
SAN JOSE         71/2014       79/1962
GILROY           77/2014       80/2014

NORTH CENTRAL COAST...

MONTEREY         78/1942         84/2014
SANTA CRUZ       80/1899         84/2014
SALINAS          78/2014         87/2014
SNS AIRPORT      78/2014         86/2014
KING CITY        77/2014         86/1976

&&

.MARINE...AS OF 8:24 AM PST SUNDAY...HIGH PRESSURE SHIFTS
DOWNSTREAM AND WEAKENS OVER THE COASTAL WATERS THROUGH THE NEXT 24
HOURS. OFFSHORE FLOW WILL PERSIST INTO EARLY NEXT WEEK ALONG THE
COASTLINE WITH SOUTHERLY FLOW PREVAILING FURTHER OFFSHORE.
NORTHERLY WINDS RETURN LATE WEDNESDAY/EARLY THURSDAY. THE LARGE
LONG PERIOD SWELL HAS TAPERED OFF BUT WILL CONTINUE TO IMPACT THE
COASTAL WATERS THROUGH THIS AFTERNOON. THIS LONG PERIOD SWELL WILL
RESULT IN LARGE BREAKERS NEAR BARS...SHOALS AND JETTIES LEADING TO
HAZARDOUS CONDITIONS ALONG THE COAST.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...HIGH SURF ADVISORY...COASTAL SECTIONS FROM SONOMA COUNTY
             THROUGH MONTEREY COUNTY.

&&

$$

PUBLIC FORECAST: SIMS
AVIATION: CANEPA
MARINE: DRP
CLIMATE: CANEPA/JOHNSON

VISIT US AT WEATHER.GOV/SANFRANCISCO

FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSBAYAREA
WWW.TWITTER.COM/NWSBAYAREA
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