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000
FXUS66 KSGX 052050
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
200 PM PDT THU MAY 5 2016

.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL BRING SHOWERS AT TIMES THROUGH THE
WEEKEND...WITH THE GREATEST CHANCES LATE TONIGHT AND FRIDAY WHEN A
FEW THUNDERSTORMS ARE POSSIBLE. LOCALLY STRONG GUSTY WINDS WILL
OCCUR IN THE MOUNTAINS AND DESERTS LATE THIS AFTERNOON AND TONIGHT.
DAYTIME TEMPERATURES WILL BE WELL BELOW NORMAL THROUGH SUNDAY...THEN
HIGH PRESSURE ALOFT WILL MOVE IN FROM THE WEST AND BRING WARMER
WEATHER IN THE EARLY TO MIDDLE PARTS OF NEXT WEEK.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

SKIES WERE CLOUDY WEST OF THE MOUNTAINS AS MINIMAL AFTERNOON
CLEARING OCCURRED. PATCHY DRIZZLE AND VERY LIGHT SHOWERS OCCURREDAT
TIMES...WITH A FEW LOCATIONS RECEIVING A FEW HUNDREDTHS OF AN INCH
OF ACCUMULATION...EXCEPT THE HIGHLY OROGRAPHIC CRESTLINE RIDGE HAD
0.15 INCHES IN THE SAN BERNARDINO MOUNTAINS. LOCAL WIND GUSTS WERE
OVER 40 MPH ON THE DESERT MOUNTAIN SLOPES AT MID-MORNING...WITH SOME
INCREASE EXPECTED LATE THIS AFTERNOON AND TONIGHT.

THE STORM SYSTEM IS CURRENTLY AROUND 32N/124W AND IS SLOWLY MOVING
EAST. A VIGOROUS WAVE IS EVIDENT ON THE WATER VAPOR LOOP AROUND 120
DEGREES WEST...AND LIGHTNING HAS BEEN DETECTED PERIODICALLY WITH
CONVECTION ALONG THIS WAVE. MORE SIGNIFICANT PRECIP SHOULD START
THIS EVENING ALONG THE COAST...MOST LIKELY MID-EVENING...WITH A
GRADUAL INCREASE IN PRECIP ELSEWHERE OVERNIGHT. MODELS ARE TRENDING
A LITTLE FURTHER NORTH WITH THE PASSAGE OVER SO-CAL FRIDAY...WHICH
WOULD BE FAVORABLE FOR HIGHER PRECIPITATION TOTALS IN THE AREA WITH
THE SYSTEM. ALSO...A MODERATE SURFACE LOW...AROUND 1010-1013
MB...DEPENDING ON THE MODEL...WILL MOVE THROUGH THE COASTAL WATERS
FRIDAY MORNING. THERE SHOULD BE ENOUGH INSTABILITY...WITH 500 MB
TEMPS AS LOW AS AROUND -22 DEG C...AND UPWARD VERTICAL MOTION ALOFT
DUE TO DYNAMICS TO BRING A FEW THUNDERSTORMS. WITH SOME SURFACE
HEATING FRIDAY...THERE COULD BE ENOUGH UPWARD MOTION IN THE STORMS
FOR HAIL...AND HAIL DOES OCCASIONALLY OCCUR WITH CLOSED LOWS THIS
LATE IN THE SEASON. MOST LIKELY THE HAIL DIAMETERS WILL BE 1/2 INCH
OR LESS. RIGHT NOW...TOTAL RAINFALL AMOUNTS SHOULD BE AROUND ONE-
HALF INCH AT LOWER ELEVATIONS...BUT LOCALLY MORE WHERE CONVECTION
MOVES OVER. MOUNTAINS SHOULD HAVE AROUND ONE INCH...BUT AGAIN
LOCALLY MORE IN CONVECTION. SNOW LEVELS WILL MOSTLY BE AROUND OR
ABOVE 7000 FEET...SO THE AREAL EXTENT OF SNOW WILL BE SMALL...BUT A
FEW PLACES COULD GET SEVERAL INCHES. THE MAIN PART OF THE UPPER LOW
WILL MOVE NORTHEAST INTO SOUTHERN UTAH BY SATURDAY...BUT ANOTHER
LOBE OF THE LOW COULD SWING THROUGH SO-CAL AND THE COASTAL WATERS
FROM THE NORTH...THOUGH THE MAIN VORT MAX WITH THAT WILL MOSTLY TAKE
A PATH SOUTHWARD OFF THE COAST AND THEN EAST INTO NORTHERN BAJA.
STILL...SOME MOISTURE AND INSTABILITY SHOULD CONTINUE SHOWERS
SATURDAY...WITH SOME THUNDERSTORMS MAINLY OVER HIGHER TERRAIN. THE
LOW WILL MOSTLY BE EAST OF THE AREA SUNDAY...WITH ONLY A FEW SHOWERS
POSSIBLE THEN.

HIGH PRESSURE ALOFT WILL MOVE IN FROM THE WEST MOST OF NEXT WEEK AND
BRING WARMER WEATHER...WITH TEMPS A LITTLE ABOVE NORMAL INLAND BY
TUE OR WED. THERE WILL LIKELY BE A MARINE LAYER NEAR THE COAST
THOUGH...SO THE WARMUP WILL BE LESS PRONOUNCED THERE...AND THERE
WILL BE NIGHT/MORNING LOW CLOUDS.

&&

.AVIATION...
052030Z...COASTS/VALLEYS...BKN/OVC LOW CLOUDS WITH BASES 3500-4500
FT MSL AND TOPS TO 5500 FT MSL CONTINUE TO FILL THE COASTAL BASIN.
VIS ACROSS THE REGION MAINLY P6SM...LOWER WHERE THESE CLOUDS
INTERSECT TERRAIN ON THE UPPER COASTAL SLOPES. BKN CLOUDS WITH
SIMILAR BASES AND TOPS WILL CONTINUE TO AFFECT THE AREA THROUGH LATE
AFTERNOON. STARTING AROUND 06/0200Z...SKIES WILL BECOME OVC WITH
SHOWERS AND ISOLATED THUNDERSTORMS DEVELOPING. EXPECT VIS TO DROP
TO 3-5SM IN SOME OF THE HEAVIER SHOWERS. BKN/OVC CONDS WITH SHRA
AND ISOLATED T-STORMS WILL CONTINUE THROUGH A MAJORITY OF FRIDAY.

MOUNTAINS/DESERTS...ABOVE THE MARINE LAYER...SCT CLOUDS AOA 15000
FEET WITH UNRESTRICTED VISIBILITY TODAY. THROUGH TONIGHT...GUSTY
SW TO WEST WINDS WILL CONTINUE TO BRING WEAK TO MODERATE
UP/DOWNDRAFTS OVER THE MOUNTAIN SLOPES AND DESERTS THROUGH TONIGHT.

&&

.MARINE...
130 PM...A PACIFIC STORM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
LATE THIS EVENING THROUGH LATE FRIDAY AFTERNOON. THESE STORMS COULD
PRODUCE CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS.
OTHERWISE...NO HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.


&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...WIND ADVISORY FROM 3 PM THIS AFTERNOON TO 5 AM PDT FRIDAY FOR
     RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY DESERTS-SAN
     DIEGO COUNTY MOUNTAINS-SAN GORGONIO PASS NEAR BANNING.

PZ...NONE.

&&

$$

PUBLIC...MAXWELL
AVIATION/MARINE...JT





000
FXUS66 KSGX 051651
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
930 AM PDT THU MAY 5 2016

.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL BRING SHOWERS AT TIMES THROUGH THE
WEEKEND...WITH THE GREATEST CHANCES LATE TONIGHT AND FRIDAY WHEN A
FEW THUNDERSTORMS ARE POSSIBLE. LOCALLY STRONG GUSTY WINDS WILL
OCCUR IN THE MOUNTAINS AND DESERTS LATE THIS AFTERNOON AND TONIGHT.
DAYTIME TEMPERATURES WILL BE WELL BELOW NORMAL THROUGH SUNDAY...THEN
HIGH PRESSURE ALOFT WILL MOVE IN FROM THE WEST AND BRING WARMER
WEATHER THROUGH THE MIDDLE OF NEXT WEEK.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

SKIES WERE CLOUDY WEST OF THE MOUNTAINS...AND MINIMAL AFTERNOON
CLEARING WILL OCCUR TODAY. PATCHY DRIZZLE AND VERY LIGHT SHOWERS
OCCURRED...WITH A FEW LOCATIONS RECEIVING A FEW HUNDREDTHS OF AN
INCH OF ACCUMULATION...EXCEPT THE HIGHLY OROGRAPHIC CRESTLINE RIDGE
HAD 0.13 INCHES IN THE SAN BERNARDINO MOUNTAINS. LOCAL WIND GUSTS
WERE OVER 40 MPH ON THE DESERT MOUNTAIN SLOPES AT MID-MORNING...WITH
SOME INCREASE EXPECTED LATE THIS AFTERNOON AND TONIGHT.

THE STORM SYSTEM IS CURRENTLY AROUND 32N/125W AND IS SLOWLY MOVING
EAST OR A LITTLE SOUTHEAST. MODELS ARE TRENDING A LITTLE FURTHER
NORTH WITH THE PASSAGE OVER SO-CAL FRIDAY...WHICH WOULD BE FAVORABLE
FOR HIGHER PRECIPITATION TOTALS IN THE AREA WITH THE SYSTEM.
ALSO...A MODERATE SURFACE LOW...AROUND 1010-1013 MB...DEPENDING ON
THE MODEL...WILL MOVE THROUGH THE COASTAL WATERS FRIDAY MORNING.
THERE SHOULD BE ENOUGH INSTABILITY...WITH 500 MB TEMPS AS LOW AS
AROUND -22 DEG C...AND UPWARD VERTICAL MOTION ALOFT DUE TO DYNAMICS
TO BRING A FEW THUNDERSTORMS. WITH SOME SURFACE HEATING
FRIDAY...THERE COULD BE ENOUGH UPWARD MOTION IN THE STORMS FOR
HAIL...AND HAIL DOES OCCASIONALLY OCCUR WITH CLOSED LOWS THIS LATE
IN THE SEASON. MOST LIKELY THE HAIL DIAMETERS WILL BE 1/2 INCH OR
LESS. RIGHT NOW...TOTAL RAINFALL AMOUNTS SHOULD BE AROUND ONE-HALF
INCH AT LOWER ELEVATIONS...BUT LOCALLY MORE WHERE CONVECTION MOVES
OVER. MOUNTAINS SHOULD HAVE AROUND ONE INCH...BUT AGAIN LOCALLY MORE
IN CONVECTION. SNOW LEVELS WILL MOSTLY BE AROUND OR ABOVE 7000
FEET...SO THE AREAL EXTENT OF SNOW WILL BE SMALL...BUT A FEW PLACES
COULD GET SEVERAL INCHES. THE MAIN PART OF THE UPPER LOW WILL MOVE
NORTHEAST INTO SOUTHERN UTAH BY SATURDAY...BUT ANOTHER LOBE OF THE
LOW WILL SWING THROUGH SO-CAL AND THE COASTAL WATERS FROM THE
NORTH...THOUGH THE MAIN VORT MAX WITH THAT WILL MOSTLY TAKE A PATH
SOUTHWARD OFF THE COAST AND THEN EAST INTO NORTHERN BAJA.
STILL...SOME MOISTURE AND INSTABILITY SHOULD CONTINUE SHOWERS
SATURDAY...WITH SOME THUNDERSTORMS MAINLY OVER HIGHER TERRAIN. THE
LOW WILL MOSTLY BE EAST OF THE AREA SUNDAY...WITH ONLY A FEW SHOWERS
POSSIBLE THEN.

HIGH PRESSURE ALOFT WILL MOVE IN FROM THE WEST MOST OF NEXT WEEK AND
BRING WARMER WEATHER...WITH TEMPS A LITTLE ABOVE NORMAL INLAND BY
TUE OR WED. THERE WILL LIKELY BE A MARINE LAYER NEAR THE COAST
THOUGH...SO THE WARMUP WILL BE LESS PRONOUNCED THERE...AND THERE
WILL BE NIGHT/MORNING LOW CLOUDS.

&&

.AVIATION...
051530Z...COASTS/VALLEYS...BKN/OVC LOW CLOUDS WITH BASES 3000-3500
FT MSL AND TOPS TO 5000 FT MSL CONTINUE TO FILL THE COASTAL BASIN.
VIS ACROSS THE REGION MAINLY P6SM...LOWER WHERE THESE CLOUDS
INTERSECT TERRAIN ON THE COASTAL SLOPES. BKN TO OCCASIONALLY SCT LOW
CLOUDS WITH SIMILAR BASES AND TOPS WILL CONTINUE THROUGH LATE
AFTERNOON. AFT 06/0200Z...SKIES WILL BECOME OVC WITH SHOWERS AND
ISOLATED THUNDERSTORMS . EXPECT VIS TO DROP TO 3-5SM IN SOME OF THE
HEAVIER SHOWERS.

MOUNTAINS/DESERTS...ABOVE THE MARINE LAYER...SCT CLOUDS AOA 15000
FEET WITH UNRESTRICTED VISIBILITY TODAY. GUSTY SW TO WEST WINDS WILL
CONTINUE TO BRING WEAK TO MODERATE UP/DOWNDRAFTS OVER AND EAST OF
THE MOUNTAINS THROUGH THIS AFTERNOON.

&&

.MARINE...
830 AM...A PACIFIC STORM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
LATE THIS EVENING THROUGH LATE FRIDAY AFTERNOON. THESE STORMS COULD
PRODUCE CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS.
OTHERWISE...NO HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...WIND ADVISORY FROM 3 PM THIS AFTERNOON TO 5 AM PDT FRIDAY FOR
     RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY DESERTS-SAN
     DIEGO COUNTY MOUNTAINS-SAN GORGONIO PASS NEAR BANNING.

PZ...NONE.

&&

$$

PUBLIC...MAXWELL
AVIATION/MARINE...JT





000
FXUS66 KSGX 050945
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
245 AM PDT THU MAY 5 2016

.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL ARRIVE IN SOUTHERN CALIFORNIA TODAY
AND MOVE SLOWLY THROUGH THE REGION FRIDAY THROUGH THE WEEKEND.
IT WILL BRING COOL AND CLOUDY WEATHER WITH SHOWERS AND BRISK
WINDS THIS AFTERNOON AND EVENING. THE GREATEST CHANCE OF SHOWERS
WILL BE TONIGHT AND FRIDAY...WITH A FEW THUNDERSTORMS POSSIBLE.
FAIR AND WARMER WEATHER WILL RETURN NEXT WEEK AS HIGH PRESSURE
MOVES OVER THE WEST COAST.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

MARINE LAYER CLOUDS HAVE DEVELOPED RAPIDLY TO FILL THE ENTIRE
COASTAL BASIN THIS MORNING...AND THIS COULD PRODUCE SOME DRIZZLE.
A LOW PRESSURE TROUGH WILL MOVE INTO SOUTHERN CALIFORNIA TODAY.
WINDS WILL DEVELOP IN PORTIONS OF THE MOUNTAINS AND DESERTS THIS
AFTERNOON THROUGH TONIGHT. SOME GUSTS WILL TOP 50 MPH. THE CHANCE
OF SHOWERS WILL GRADUALLY INCREASE THIS AFTERNOON AND
EVENING...AND BECOME LIKELY TONIGHT THROUGH FRIDAY. LATEST MODELS
INDICATE ENOUGH INSTABILITY FOR A SLIGHT CHANCE OF THUNDERSTORMS
THIS EVENING THROUGH FRIDAY AS WELL...BUT THE GREATEST CHANCE WILL
MIGRATE INLAND DURING THE DAY FRIDAY. THE LOW PRESSURE SYSTEM VERY
SLOWLY MOVES EAST OVER THE WEEKEND AND ENOUGH MOISTURE KEEPS
SWIRLING AROUND THE LOW TO KEEP SHOWERS IN THE FORECAST THROUGH
SUNDAY...ALTHOUGH LESS CHANCE THAN ON FRIDAY. RAINFALL AMOUNTS
WILL RANGE FROM A FEW HUNDREDTHS IN THE LOW DESERT...TWO TENTHS TO
A HALF INCH IN COASTS AND VALLEYS...AND A HALF TO AN INCH OR SO IN
THE MOUNTAINS. THE SHOWERY NATURE WILL MAKE THE RAINFALL
DISTRIBUTION QUITE RANDOM AND VARIABLE. SNOW WILL STAY ABOVE
6500 FEET...BUT SEVERAL INCHES COULD ACCUMULATE ON THE HIGHEST
PEAKS. THE SYSTEM FINALLY DEPARTS EAST LATE SUNDAY. HIGH PRESSURE
ALOFT BUILDS ALONG THE WEST COAST TO BRING FAIR AND WARMER
WEATHER MONDAY THROUGH AT LEAST WEDNESDAY. A SHALLOW MARINE LAYER
IS EXPECTED TO PROVIDE COASTAL CLOUDS NIGHTS AND MORNINGS.

&&

.AVIATION...
050930Z...COASTS/VALLEYS...BKN/OVC LOW CLOUDS WITH BASES 2500-3000
FT MSL AND TOPS TO 4000 FT MSL HAVE FILLED IN THE COASTAL BASIN
OVERNIGHT. VIS WILL DROP TO 3-5 SM WHERE THESE CLOUDS INTERSECT
TERRAIN ON THE COASTAL SLOPES. LIGHT DRIZZLE IS ALSO POSSIBLE THIS
MORNING FROM THE COAST TO THE MOUNTAINS. EXPECT ONLY PARTIAL
CLEARING OF CLOUD COVER AFTER 17Z, BEFORE THE CLOUD LAYER THICKENS
BACK UP LATER THIS AFTERNOON.

MOUNTAINS/DESERTS...ABOVE THE MARINE LAYER...SCT CLOUDS AOA 15000
FEET WITH UNRESTRICTED VISIBILITY TODAY. GUSTY SW TO WEST WINDS WILL
CONTINUE TO BRING WEAK TO MODERATE UP/DOWNDRAFTS OVER AND EAST OF
THE MOUNTAINS THROUGH TODAY AS WELL.

&&

.MARINE...
230 AM...A PACIFIC STORM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
THIS EVENING THROUGH FRIDAY. THESE STORMS COULD PRODUCE CLOUD TO
WATER LIGHTNING AND BRIEF GUSTY WINDS. OTHERWISE...NO HAZARDOUS
MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...WIND ADVISORY FROM 3 PM THIS AFTERNOON TO 5 AM PDT FRIDAY FOR
     RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY DESERTS-SAN
     DIEGO COUNTY MOUNTAINS-SAN GORGONIO PASS NEAR BANNING.

PZ...NONE.

&&

$$

PUBLIC...MM
AVIATION/MARINE...TS





000
FXUS66 KSGX 050342
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
842 PM PDT WED MAY 4 2016

.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE PACIFIC AND
RESULT IN COOLER WEATHER THURSDAY WITH SOME DRIZZLE OR LIGHT SHOWERS
POSSIBLE. MODERATELY STRONG WINDS WILL DEVELOP IN PARTS OF THE
MOUNTAINS AND DESERTS THURSDAY AND THURSDAY NIGHT. SHOWERS WILL
OCCUR AT TIMES THURSDAY NIGHT THROUGH SUNDAY...WITH GREATEST CHANCES
FRIDAY WHEN A FEW THUNDERSTORMS ARE POSSIBLE. TEMPERATURES WILL BE
BELOW NORMAL THURSDAY THROUGH SUNDAY. FAIR AND WARM WEATHER WILL
RETURN NEXT WEEK AS HIGH PRESSURE MOVES OVER THE WEST COAST.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

LOW CLOUD DECK HAS SPREAD INTO THE INLAND VALLEYS THIS EVENING.
THE SKY WILL BE MOSTLY CLOUDY TO OVERCAST WEST OF THE MOUNTAINS
WITH THE POTENTIAL FOR PATCHY DRIZZLE OVERNIGHT. HIGH RESOLUTION
MODELS SEEM BULLISH WITH SOME SHOWERS DEVELOPING AND MOVING INLAND
OVERNIGHT. BOTH THE GFS AND ECMWF KEEP IT DRY...AND SINCE AM NOT
SEEING ANY INDICATION FOR SHOWERS WILL CONTINUE TO KEEP MENTION
OUT OF THE FORECAST THROUGH THE NIGHT.

THE UPPER LOW IS SOME 550 MI TO OUR WEST/NORTHWEST. THE MODELS
CONTINUE TO BE CONSISTENT WITH THE LOW...MOVING OVER FAR SOUTHERN
CALIFORNIA LATE FRIDAY. RIGHT NOW...THE MARINE LAYER LOOKS
MARGINALLY DEEP FOR PRECIP THU MORNING...SO MOST LIKELY DRIZZLE
WILL OCCUR FROM THE COASTAL MOUNTAIN SLOPES WEST TO THE COAST. THE
ONSHORE FLOW AND FURTHER DEEPENING OF THE MOIST LAYER WILL RESULT
IN SOME RAIN THURSDAY NIGHT/FRIDAY MORNING...WITH A TRANSITION
TOWARDS CONVECTIVE SHOWERS/ISOLATED THUNDERSTORMS DURING THE DAY
FRIDAY AS THE COLD CORE MOVES OVER...WITH -22 C AT 500 MB. BEST
CHANCES WILL BE OVER THE MOUNTAINS DUE TO THE HIGH SUN
ANGLE...THOUGH DYNAMICS COULD COMBINE WITH SOME INSTABILITY ALOFT
TO BRING A FEW TSTORMS FRI MORNING. THERE IS A RISK OF HAIL
FRIDAY...MOSTLY 1/2 INCH OR LESS...BUT UPPER LOWS IN MAY IN
SOUTHERN CALIFORNIA CAN PRODUCE LARGE HAIL. NEAR SATURATION OCCURS
UP TO AROUND 600 MB FRIDAY...WHICH IS GOOD FOR PRECIP. THE LOW
WILL MOVE TO THE NORTHEAST SAT/SUN...BUT ENOUGH MOISTURE AND SOME
INSTABILITY WILL KEEP THE CHANCE OF SHOWERS SAT...AND A SLIGHT
CHANCE SUNDAY. AFTER FRIDAY...MOST OF THE ACTIVITY WILL BE
INLAND...CLOSER TO THE LOW...AND WITH BETTER INSTABILITY AIDED BY
THAT SUN ANGLE. OVERALL...PRECIP AMOUNTS SHOULD BE 1/4 TO 1/2
INCH...WITH LOCAL AMOUNTS OVER 1 INCH IN THE MOUNTAINS FROM
THURSDAY NIGHT THROUGH SUNDAY. SOME WIND WILL OCCUR THU/THU NIGHT
IN THE MOUNTAINS/DESERTS...WITH ISOLATED GUSTS TO NEAR 60 MPH ON
THE DESERT SLOPES...WHEN SOME TEMPERATURE GRADIENTS WILL STILL BE
IN PLACE...BUT AFTER THAT...WINDS WILL BE SOMEWHAT LIGHTER AS THE
CLOSED LOW WILL RESULT IN WEAKER GRADIENTS. A WIND ADVISORY WILL
BE ISSUED FOR SOME MOUNTAIN/DESERT LOCATIONS 3 PM FRIDAY-5 AM
SATURDAY. SNOW LEVELS WILL MOSTLY BE AROUND 7000 FEET...WITH
SEVERAL INCHES OF SNOW POSSIBLE AT HIGHEST ELEVATIONS.

HIGH PRESSURE ALOFT WILL BRING FAIR AND WARMER WEATHER EXCEPT FOR
SOME NIGHT/MORNING COASTAL STRATUS EARLY NEXT WEEK.

&&

.AVIATION...
050330Z...COASTS/VALLEYS...BKN/OVC LOW CLOUDS WITH BASES 2000-2500
FT MSL AND TOPS TO 3000 FT MSL WILL INCREASE IN COVERAGE
OVERNIGHT...OBSCURING HIGHER TERRAIN ON THE COASTAL SLOPES. VIS WILL
DROP TO 3-5 SM WHERE THESE CLOUDS INTERSECT TERRAIN. LIGHT DRIZZLE
WILL ALSO BE POSSIBLE LATE TONIGHT FROM THE COAST TO THE MOUNTAINS.
EXPECT PARTIAL CLEARING TO THE COAST AFTER 17Z THU.

MOUNTAINS/DESERTS...ABOVE THE MARINE LAYER...SCT CLOUDS AOA 15000
FEET WITH UNRESTRICTED VISIBILITY THROUGH THU. GUSTY SW TO WEST
WINDS WILL CONTINUE TO BRING WEAK TO MODERATE UP/DOWNDRAFTS OVER
AND EAST OF THE MOUNTAINS THROUGH THU.

&&

.MARINE...
830 PM...A PACIFIC STORM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
FRIDAY MORNING THROUGH LATE FRIDAY AFTERNOON. THESE STORMS COULD
PRODUCE CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS.
OTHERWISE...NO HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH
SATURDAY.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...WIND ADVISORY FROM 3 PM THURSDAY TO 5 AM PDT FRIDAY FOR
     RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY DESERTS-SAN
     DIEGO COUNTY MOUNTAINS-SAN GORGONIO PASS NEAR BANNING.
PZ...NONE.

&&

$$

PUBLIC...GREGORIA/MAXWELL
AVIATION/MARINE...PG





000
FXUS66 KSGX 042049
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
200 PM PDT WED MAY 4 2016

.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE PACIFIC AND
RESULT IN COOLER WEATHER THURSDAY WITH SOME DRIZZLE OR LIGHT SHOWERS
POSSIBLE. MODERATELY STRONG WINDS WILL DEVELOP IN PARTS OF THE
MOUNTAINS AND DESERTS THURSDAY AND THURSDAY NIGHT. SHOWERS WILL
OCCUR AT TIMES THURSDAY NIGHT THROUGH SUNDAY...WITH GREATEST CHANCES
FRIDAY WHEN A FEW THUNDERSTORMS ARE POSSIBLE. TEMPERATURES WILL BE
BELOW NORMAL THURSDAY THROUGH SUNDAY. FAIR AND WARM WEATHER WILL
RETURN NEXT WEEK AS HIGH PRESSURE MOVES OVER THE WEST COAST.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

LOW CLOUDS ONLY PARTIALLY CLEARED THE COAST...BUT SKIES WERE MOSTLY
CLEAR INLAND. DUE TO THE MARINE LAYER...IT WAS MUCH COOLER WEST OF
THE MOUNTAINS...AS MUCH AS 15-20 DEG F LOWER IN PARTS OF THE INLAND
EMPIRE VERSUS 24 HOURS AGO...BUT SINCE THE PROFILE ABOVE THE MARINE
LAYER HAS NOT YET COOLED...THE DESERTS AND MOST MOUNTAIN AREAS HAD
SIMILAR TEMPS TODAY VERSUS TUESDAY...AS HIGH AS 98 AT THERMAL.

THE UPPER LOW IS NOW AROUND 33N/127W...AROUND 600 MI TO OUR WEST.
THE MODELS CONTINUE TO BE CONSISTENT WITH THE LOW...MOVING OVER FAR
SOUTHERN CALIFORNIA LATE FRIDAY. RIGHT NOW...THE MARINE LAYER LOOKS
MARGINALLY DEEP FOR PRECIP THU MORNING...SO MOST LIKELY DRIZZLE WILL
OCCUR FROM THE COASTAL MOUNTAIN SLOPES WEST TO THE COAST. THE
ONSHORE FLOW AND FURTHER DEEPENING OF THE MOIST LAYER WILL RESULT IN
SOME RAIN THURSDAY NIGHT/FRIDAY MORNING...WITH A TRANSITION TOWARDS
CONVECTIVE SHOWERS/ISOLATED THUNDERSTORMS DURING THE DAY FRIDAY AS
THE COLD CORE MOVES OVER...WITH -22 C AT 500 MB. BEST CHANCES WILL
BE OVER THE MOUNTAINS DUE TO THE HIGH SUN ANGLE...THOUGH DYNAMICS
COULD COMBINE WITH SOME INSTABILITY ALOFT TO BRING A FEW TSTORMS FRI
MORNING. THERE IS A RISK OF HAIL FRIDAY...MOSTLY 1/2 INCH OR
LESS...BUT UPPER LOWS IN MAY IN SOUTHERN CALIFORNIA CAN PRODUCE
LARGE HAIL. NEAR SATURATION OCCURS UP TO AROUND 600 MB
FRIDAY...WHICH IS GOOD FOR PRECIP. THE LOW WILL MOVE TO THE
NORTHEAST SAT/SUN...BUT ENOUGH MOISTURE AND SOME INSTABILITY WILL
KEEP THE CHANCE OF SHOWERS SAT...AND A SLIGHT CHANCE SUNDAY. AFTER
FRIDAY...MOST OF THE ACTIVITY WILL BE INLAND...CLOSER TO THE
LOW...AND WITH BETTER INSTABILITY AIDED BY THAT SUN ANGLE.
OVERALL...PRECIP AMOUNTS SHOULD BE 1/4 TO 1/2 INCH...WITH LOCAL
AMOUNTS OVER 1 INCH IN THE MOUNTAINS FROM THURSDAY NIGHT THROUGH
SUNDAY. SOME WIND WILL OCCUR THU/THU NIGHT IN THE
MOUNTAINS/DESERTS...WITH ISOLATED GUSTS TO NEAR 60 MPH ON THE DESERT
SLOPES...WHEN SOME TEMPERATURE GRADIENTS WILL STILL BE IN
PLACE...BUT AFTER THAT...WINDS WILL BE SOMEWHAT LIGHTER AS THE
CLOSED LOW WILL RESULT IN WEAKER GRADIENTS. A WIND ADVISORY WILL BE
ISSUED FOR SOME MOUNTAIN/DESERT LOCATIONS 3 PM FRIDAY-5 AM SATURDAY.
SNOW LEVELS WILL MOSTLY BE AROUND 7000 FEET...WITH SEVERAL INCHES
OF SNOW POSSIBLE AT HIGHEST ELEVATIONS.

HIGH PRESSURE ALOFT WILL BRING FAIR AND WARMER WEATHER EXCEPT FOR
SOME NIGHT/MORNING COASTAL STRATUS EARLY NEXT WEEK.

&&

.AVIATION...
042030Z...COASTS/VALLEYS...BKN/OVC LOW CLOUDS WITH BASES BETWEEN
1400-1800 FT MSL AND TOPS 2200 FT MSL CONTINUE TO HUG THE IMMEDIATE
COAST. INLAND...FEW HIGH CLOUDS AOA 15000 FT MSL WILL SLIDE OVER THE
REGION THROUGH TONIGHT. CLOUD BASES WILL GRADUALLY RISE TO AROUND
2000 FT MSL AND PUSH INLAND AGAIN AFT 05/0200Z. VIS WILL DROP TO 3-5
SM WHERE THESE CLOUDS INTERSECT TERRAIN ALONG THE LOWER COASTAL
SLOPES. LIGHT DRIZZLE WILL ALSO BE POSSIBLE LATE TONIGHT FROM THE
COAST TO THE MOUNTAINS.

MOUNTAINS/DESERTS...AS THE MARINE LAYER DEEPENS...MAINLY AFT
05/0200Z...MOUNTAINS WILL BECOME OBSCURED. THIS SCENARIO WOULD LOWER
VIS BELOW 3 MILES AT TIMES. IN THE DESERTS...EXPECT SCT CLOUDS AOA
15000 FT MSL AND UNRESTRICTED VIS THROUGH TONIGHT. SOUTH SOUTHWEST
WINDS IN THE SAN BERNARDINO MOUNTAINS AND UPPER DESERTS AND WEST
SOUTHWEST WINDS IN THE SAN DIEGO COUNTY MOUNTAINS/RIVERSIDE COUNTY
MOUNTAINS AND LOWER DESERTS WILL BECOME GUSTY AT TIMES AFT 04/2200Z
THIS AFTERNOON.

&&

.MARINE...
130 PM...A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
FRIDAY MORNING THROUGH LATE FRIDAY AFTERNOON. THESE STORMS COULD
PRODUCE CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS.
OTHERWISE...NO HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.


&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...WIND ADVISORY FROM 3 PM THURSDAY TO 5 AM PDT FRIDAY FOR
     RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY DESERTS-SAN
     DIEGO COUNTY MOUNTAINS-SAN GORGONIO PASS NEAR BANNING.
PZ...NONE.

&&

$$

PUBLIC...MAXWELL
AVIATION/MARINE...JT





000
FXUS66 KSGX 041652
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
930 AM PDT WED MAY 4 2016

.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE PACIFIC AND
RESULT IN COOLER AND CLOUDIER WEATHER TODAY AND THURSDAY.
MODERATELY STRONG WINDS WILL DEVELOP IN PARTS OF THE MOUNTAINS AND
DESERTS THURSDAY AND THURSDAY NIGHT. SHOWERS WILL OCCUR AT TIMES
FROM LATE THURSDAY THROUGH SUNDAY...WITH GREATEST CHANCES FRIDAY
WHEN A FEW THUNDERSTORMS ARE POSSIBLE. TEMPERATURES WILL BE BELOW
NORMAL THURSDAY THROUGH SUNDAY. FAIR AND WARM WEATHER WILL RETURN
NEXT WEEK AS HIGH PRESSURE MOVES OVER THE WEST COAST.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

LOW CLOUDS WERE CLEARING SLOWLY THIS MORNING AND PROBABLY WILL NOT
CLEAR THE COAST ENTIRELY THIS AFTERNOON. SOME FOG OCCURRED IN THE
INLAND EMPIRE EARLIER BUT HAD MOSTLY DISSIPATED BY MID-MORNING. WITH
THE MARINE LAYER...IT WILL BE COOLER WEST OF THE
MOUNTAINS...POSSIBLY 15-20 DEG F LOWER IN PARTS OF THE INLAND
EMPIRE...BUT SINCE THE PROFILE ABOVE THE MARINE LAYER HAS NOT YET
COOLED...THE DESERTS AND MOST MOUNTAIN AREAS WILL HAVE SIMILAR TEMPS
TODAY VERSUS TUESDAY.

THE UPPER LOW IS NOW AROUND 32N/127W...AROUND 600 MI TO OUR WEST.
THE MODELS CONTINUE TO BE CONSISTENT WITH THE LOW...MOVING OVER FAR
SOUTHERN CALIFORNIA LATE FRIDAY. RIGHT NOW...THE MARINE LAYER LOOKS
MARGINALLY DEEP FOR PRECIP THU MORNING...SO MOST LIKELY DRIZZLE WILL
OCCUR FROM THE COASTAL MOUNTAIN SLOPES WEST TO THE COAST. THE
ONSHORE FLOW AND FURTHER DEEPENING OF THE MOIST LAYER WILL RESULT IN
SOME RAIN THURSDAY NIGHT/FRIDAY MORNING...WITH A TRANSITION TOWARDS
CONVECTIVE SHOWERS/ISOLATED THUNDERSTORMS DURING THE DAY FRIDAY AS
THE COLD CORE MOVES OVER...WITH -22 C AT 500 MB. BEST CHANCES WILL BE
OVER THE MOUNTAINS DUE TO THE HIGH SUN ANGLE...THOUGH DYNAMICS COULD
COMBINE WITH SOME INSTABILITY ALOFT TO BRING A FEW TSTORMS FRI
MORNING. NEAR SATURATION OCCURS UP TO AROUND 600 MB FRIDAY...WHICH
IS GOOD FOR PRECIP. THE LOW WILL MOVE TO THE NORTHEAST SAT/SUN...BUT
ENOUGH MOISTURE AND SOME INSTABILITY WILL KEEP THE CHANCE OF SHOWERS
SAT...AND A SLIGHT CHANCE SUNDAY. AFTER FRIDAY...MOST OF THE
ACTIVITY WILL BE INLAND...CLOSER TO THE LOW...AND WITH BETTER
INSTABILITY AIDED BY THAT SUN ANGLE. OVERALL...PRECIP AMOUNTS SHOULD
BE 1/4 TO 3/4 INCH...WITH LOCAL AMOUNTS OVER 1.5 INCHES IN THE
MOUNTAINS FROM THURSDAY NIGHT THROUGH SUNDAY. SOME WIND WILL OCCUR
THU/THU NIGHT IN THE MOUNTAINS/DESERTS...PERHAPS WITH ISOLATED GUSTS
OVER 50 MPH...WHEN SOME TEMPERATURE GRADIENTS WILL STILL BE IN
PLACE...BUT AFTER THAT...WINDS WILL BE LIGHTER AS THE CLOSED LOW
WILL RESULT IN WEAKER GRADIENTS. SNOW LEVELS WILL MOSTLY BE 6500-
7500 FEET...WITH SEVERAL INCHES POSSIBLE AT HIGHEST ELEVATIONS.

HIGH PRESSURE ALOFT WILL BRING FAIR AND WARMER WEATHER EXCEPT FOR
SOME NIGHT/MORNING COASTAL STRATUS EARLY NEXT WEEK.

&&

.AVIATION...
041530Z...COASTS/VALLEYS...BKN/OVC LOW CLOUDS WITH BASES BETWEEN
1200-1400 FT MSL AND TOPS 2100 FT MSL CONTINUE TO PUSH 15-20 MILES
INLAND FROM THE COAST. VIS HAS LOWERED TO 3-5 SM WHERE THESE CLOUDS
NEAR THE TERRAIN...ESPECIALLY IN THE INLAND EMPIRE AND THE COASTAL
SLOPES OF SAN DIEGO COUNTY. CLEARING WILL BE RATHER SLOW INLAND
TODAY...WITH COASTAL AIRPORTS REMAINING BKN/OVC. CLOUD BASES WILL BE
GRADUALLY RISING TO AROUND 2500 FT MSL AND TOPS 3000 FT MSL THIS
EVENING INTO TONIGHT.

MOUNTAINS/DESERTS...AS THE MARINE LAYER DEEPENS...MAINLY AFT
05/0600Z...MOUNTAINS WILL BECOME OBSCURED. THIS SCENARIO WOULD LOWER
VIS BELOW 3 MILES AT TIMES. IN THE DESERTS...EXPECT SCT CLOUDS AOA
15000 FT MSL AND UNRESTRICTED VIS THROUGH TONIGHT. SOUTH SOUTHWEST
WINDS IN THE NORTHERN MOUNTAINS AND UPPER DESERTS AND WEST SOUTHWEST
WINDS IN THE SOUTHERN MOUNTAINS AND LOWER DESERTS WILL BECOME GUSTY
AT TIMES AFT 04/2100Z THIS AFTERNOON.

&&

.MARINE...
830 AM...A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
FRIDAY MORNING THROUGH LATE FRIDAY AFTERNOON. THESE STORMS COULD
PRODUCE CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS.
OTHERWISE...NO HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.

&&

$$

PUBLIC...MAXWELL
AVIATION/MARINE...JT





000
FXUS66 KSGX 041652
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
930 AM PDT WED MAY 4 2016

.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE PACIFIC AND
RESULT IN COOLER AND CLOUDIER WEATHER TODAY AND THURSDAY.
MODERATELY STRONG WINDS WILL DEVELOP IN PARTS OF THE MOUNTAINS AND
DESERTS THURSDAY AND THURSDAY NIGHT. SHOWERS WILL OCCUR AT TIMES
FROM LATE THURSDAY THROUGH SUNDAY...WITH GREATEST CHANCES FRIDAY
WHEN A FEW THUNDERSTORMS ARE POSSIBLE. TEMPERATURES WILL BE BELOW
NORMAL THURSDAY THROUGH SUNDAY. FAIR AND WARM WEATHER WILL RETURN
NEXT WEEK AS HIGH PRESSURE MOVES OVER THE WEST COAST.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

LOW CLOUDS WERE CLEARING SLOWLY THIS MORNING AND PROBABLY WILL NOT
CLEAR THE COAST ENTIRELY THIS AFTERNOON. SOME FOG OCCURRED IN THE
INLAND EMPIRE EARLIER BUT HAD MOSTLY DISSIPATED BY MID-MORNING. WITH
THE MARINE LAYER...IT WILL BE COOLER WEST OF THE
MOUNTAINS...POSSIBLY 15-20 DEG F LOWER IN PARTS OF THE INLAND
EMPIRE...BUT SINCE THE PROFILE ABOVE THE MARINE LAYER HAS NOT YET
COOLED...THE DESERTS AND MOST MOUNTAIN AREAS WILL HAVE SIMILAR TEMPS
TODAY VERSUS TUESDAY.

THE UPPER LOW IS NOW AROUND 32N/127W...AROUND 600 MI TO OUR WEST.
THE MODELS CONTINUE TO BE CONSISTENT WITH THE LOW...MOVING OVER FAR
SOUTHERN CALIFORNIA LATE FRIDAY. RIGHT NOW...THE MARINE LAYER LOOKS
MARGINALLY DEEP FOR PRECIP THU MORNING...SO MOST LIKELY DRIZZLE WILL
OCCUR FROM THE COASTAL MOUNTAIN SLOPES WEST TO THE COAST. THE
ONSHORE FLOW AND FURTHER DEEPENING OF THE MOIST LAYER WILL RESULT IN
SOME RAIN THURSDAY NIGHT/FRIDAY MORNING...WITH A TRANSITION TOWARDS
CONVECTIVE SHOWERS/ISOLATED THUNDERSTORMS DURING THE DAY FRIDAY AS
THE COLD CORE MOVES OVER...WITH -22 C AT 500 MB. BEST CHANCES WILL BE
OVER THE MOUNTAINS DUE TO THE HIGH SUN ANGLE...THOUGH DYNAMICS COULD
COMBINE WITH SOME INSTABILITY ALOFT TO BRING A FEW TSTORMS FRI
MORNING. NEAR SATURATION OCCURS UP TO AROUND 600 MB FRIDAY...WHICH
IS GOOD FOR PRECIP. THE LOW WILL MOVE TO THE NORTHEAST SAT/SUN...BUT
ENOUGH MOISTURE AND SOME INSTABILITY WILL KEEP THE CHANCE OF SHOWERS
SAT...AND A SLIGHT CHANCE SUNDAY. AFTER FRIDAY...MOST OF THE
ACTIVITY WILL BE INLAND...CLOSER TO THE LOW...AND WITH BETTER
INSTABILITY AIDED BY THAT SUN ANGLE. OVERALL...PRECIP AMOUNTS SHOULD
BE 1/4 TO 3/4 INCH...WITH LOCAL AMOUNTS OVER 1.5 INCHES IN THE
MOUNTAINS FROM THURSDAY NIGHT THROUGH SUNDAY. SOME WIND WILL OCCUR
THU/THU NIGHT IN THE MOUNTAINS/DESERTS...PERHAPS WITH ISOLATED GUSTS
OVER 50 MPH...WHEN SOME TEMPERATURE GRADIENTS WILL STILL BE IN
PLACE...BUT AFTER THAT...WINDS WILL BE LIGHTER AS THE CLOSED LOW
WILL RESULT IN WEAKER GRADIENTS. SNOW LEVELS WILL MOSTLY BE 6500-
7500 FEET...WITH SEVERAL INCHES POSSIBLE AT HIGHEST ELEVATIONS.

HIGH PRESSURE ALOFT WILL BRING FAIR AND WARMER WEATHER EXCEPT FOR
SOME NIGHT/MORNING COASTAL STRATUS EARLY NEXT WEEK.

&&

.AVIATION...
041530Z...COASTS/VALLEYS...BKN/OVC LOW CLOUDS WITH BASES BETWEEN
1200-1400 FT MSL AND TOPS 2100 FT MSL CONTINUE TO PUSH 15-20 MILES
INLAND FROM THE COAST. VIS HAS LOWERED TO 3-5 SM WHERE THESE CLOUDS
NEAR THE TERRAIN...ESPECIALLY IN THE INLAND EMPIRE AND THE COASTAL
SLOPES OF SAN DIEGO COUNTY. CLEARING WILL BE RATHER SLOW INLAND
TODAY...WITH COASTAL AIRPORTS REMAINING BKN/OVC. CLOUD BASES WILL BE
GRADUALLY RISING TO AROUND 2500 FT MSL AND TOPS 3000 FT MSL THIS
EVENING INTO TONIGHT.

MOUNTAINS/DESERTS...AS THE MARINE LAYER DEEPENS...MAINLY AFT
05/0600Z...MOUNTAINS WILL BECOME OBSCURED. THIS SCENARIO WOULD LOWER
VIS BELOW 3 MILES AT TIMES. IN THE DESERTS...EXPECT SCT CLOUDS AOA
15000 FT MSL AND UNRESTRICTED VIS THROUGH TONIGHT. SOUTH SOUTHWEST
WINDS IN THE NORTHERN MOUNTAINS AND UPPER DESERTS AND WEST SOUTHWEST
WINDS IN THE SOUTHERN MOUNTAINS AND LOWER DESERTS WILL BECOME GUSTY
AT TIMES AFT 04/2100Z THIS AFTERNOON.

&&

.MARINE...
830 AM...A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
FRIDAY MORNING THROUGH LATE FRIDAY AFTERNOON. THESE STORMS COULD
PRODUCE CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS.
OTHERWISE...NO HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.

&&

$$

PUBLIC...MAXWELL
AVIATION/MARINE...JT





000
FXUS66 KSGX 040957
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
257 AM PDT WED MAY 4 2016

.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE PACIFIC AND
RESULT IN COOLER AND CLOUDIER WEATHER TODAY AND THURSDAY. STRONG
WINDS WILL DEVELOP IN PARTS OF THE MOUNTAINS AND DESERTS THURSDAY
AND THURSDAY NIGHT. SHOWERS ARE EXPECTED LATE THURSDAY INTO SUNDAY
AS THE SYSTEM SLOWLY MOVES THROUGH THE SOUTHWEST. A FEW
THUNDERSTORMS ARE POSSIBLE ON FRIDAY. IT WILL BE SLIGHTLY WARMER
WITH A GRADUALLY DECREASING CHANCE OF SHOWERS OVER THE WEEKEND.
FAIR AND WARM WEATHER IS EXPECTED NEXT WEEK AS HIGH PRESSURE
STRENGTHENS ALONG THE WEST COAST.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

COASTAL LOW CLOUDS ARE GRADUALLY FILLING IN COASTAL AREAS AND WILL
EXTEND INTO SOME OF THE VALLEYS BY SUNRISE. A LOW PRESSURE TROUGH
IN THE PACIFIC WILL SLOWLY APPROACH SOUTHERN CALIFORNIA TODAY AND
THURSDAY. IT WILL BRING COOLER AND CLOUDIER WEATHER ALONG WITH
STRONGER BREEZES. THE MARINE LAYER WILL EXTEND FARTHER INLAND
TONIGHT AND PATCHY DRIZZLE COULD RESULT EARLY THURSDAY. THE
CHANCE OF RAIN PICKS UP LATE THURSDAY AND THE LOW PRESSURE TROUGH
SETTLES IN DIRECTLY OVERHEAD FRIDAY MORNING. WINDS WILL ALSO
INCREASE THURSDAY WITH SOME STRONG WINDS IN PARTS OF THE
MOUNTAINS AND DESERTS GUSTING OVER 40 MPH. THURSDAY NIGHT AND
FRIDAY APPEAR TO BRING US THE BEST CHANCE OF SHOWERS...BUT AMOUNTS
AND SPATIAL DISTRIBUTION ARE HARDER TO PINPOINT. THROUGH SATURDAY
WE EXPECT SOMETHING LIKE A QUARTER INCH NEAR THE COAST UP TO ONE
INCH IN PARTS OF THE MOUNTAINS...AND LESS THAN A QUARTER INCH IN
THE DESERTS. WITH THE COLDEST AIR ALOFT ON FRIDAY THE ATMOSPHERE
WILL DESTABILIZE ENOUGH TO MENTION A FEW THUNDERSTORMS IN THE
SHOWERY MIX. SNOW LEVELS WILL BE ABOUT 6500 FEET AND A FEW INCHES
COULD ACCUMULATE ABOVE THAT LEVEL. SCATTERED SHOWERS WILL CONTINUE
OVER THE WEEKEND WITH THE GREATEST CHANCE IN THE MOUNTAINS AS THE
LOW PRESSURE TROUGH MOVES EVER SO SLOWLY EASTWARD AND OUT OF THE
REGION. HIGH PRESSURE WILL BRING FAIR WEATHER MONDAY ALONG WITH A
DECENT WARMING TREND INTO THE MIDDLE OF THE WEEK.

&&

.AVIATION...
040945Z...COASTS/VALLEYS...STRATUS WITH BASES 800-1500 FT MSL HAVE
FILLED IN ALONG THE COAST THIS EVENING, CONTINUING TO SPREAD 20-25
MI INLAND THROUGH SUNRISE. LOCAL VIS OF 3-5 SM IN BR/HZ POSSIBLE
WHERE STRATUS NEARS HIGHER TERRAIN IN THE VALLEYS. STRATUS WILL
SLOWLY CLEAR INLAND 16-18Z, WITH COASTAL AREAS REMAINING SCT-BKN AND
BASES LIFTING TO AROUND 2000-2500 FT MSL THROUGH THE AFTERNOON.
STRATUS WILL BEGIN TO MOVE BACK INLAND AFTER 05/03Z.

MOUNTAINS/DESERTS...SCT CLOUDS AOA 20000 FT MSL AND UNRESTRICTED VIS
THROUGH WEDNESDAY EVENING.

&&

.MARINE...
245 AM...A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
THURSDAY AFTERNOON THROUGH FRIDAY NIGHT. THESE STORMS COULD PRODUCE
CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS. OTHERWISE...NO
HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.

&&

$$

PUBLIC...MM
AVIATION/MARINE...TS





000
FXUS66 KSGX 040422
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
922 PM PDT TUE MAY 3 2016

.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE WEST AND
RESULT IN COOLING AND MORE CLOUDS WEDNESDAY...WITH PRECIPITATION
POSSIBLE THURSDAY THROUGH THE WEEKEND. A FEW THUNDERSTORMS COULD
OCCUR...ESPECIALLY FRIDAY WHEN THE SYSTEM IS OVERHEAD. IT WILL BE
COOL THURSDAY THROUGH THE WEEKEND...THEN FAIR WEATHER WITH A
WARMING TREND WILL OCCUR EARLY NEXT WEEK AS A HIGH PRESSURE RIDGE
MOVES IN FROM THE WEST.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

THE TRANQUIL WEATHER NOW OVER SOUTHERN CALIFORNIA WILL TAKE AN
UNSETTLED TURN AS AN UPPER LOW OVER THE PACIFIC...POSITIONED
NEAR 33N/131W...APPROACHES THE AREA WED-THU AND EVENTUALLY MOVES
OVERHEAD BY FRIDAY.

THE UPPER LOW WILL START TO LOWER HEIGHTS/TEMPS ALOFT OVER SO-CAL
TONIGHT. THAT WILL START TO DEEPEN OUR MARINE LAYER AND RESULT IN
STRATUS BEING MORE LIKELY IN THE VALLEYS IN THE LATE NIGHTS AND
EARLY MORNINGS. THE ONSHORE FLOW WILL INCREASE AND BRING A COOLING
TREND TO MOST AREAS WEST OF THE MOUNTAINS WEDNESDAY. RIGHT
NOW...IT LOOKS LIKE ONLY ENOUGH MOISTURE IN THE MARINE LAYER FOR
DRIZZLE WILL OCCUR WED NIGHT/THU MORNING. SHOWERS COULD START
THURSDAY AFTERNOON AND PEAK FRIDAY WHEN THE UPPER LOW IS RIGHT
OVER US AND THE MOIST LAYER IS DEEPEST...BUT THE LOW WILL MOVE
SLOW ENOUGH THAT SOME SHOWERS COULD OCCUR OVER THE
WEEKEND...ESPECIALLY IN THE MOUNTAINS. THUNDERSTORM CHANCES WILL
BE BEST FRIDAY WITH THE COLD AIR AND THE LOW DIRECTLY OVER
US...WITH 500 MB TEMPS APPROACHING -25 C. A THUNDERSTORM COULD
HAPPEN SAT AFTERNOON AS WELL MAINLY OVER THE MOUNTAINS. AS THE SUN
ANGLE IS HIGH ENOUGH TO RESULT IN INSTABILITY FROM DAYTIME
HEATING...EVEN THOUGH THERE WILL BE A LITTLE LESS COLD AIR ALOFT.
AT OTHER TIMES...WE WILL RELY ON THE ONSHORE FLOW CAUSING LIFTING
OF A LOW- LEVEL NEAR-SATURATED LAYER OVER THE TERRAIN TO BRING
SOME PRECIPITATION. PRECIP AMOUNTS ARE HARD TO PEG AT THIS POINT
AS IT WILL VARY FROM POINT-TO- POINT...BUT GENERALLY 1/4 TO 1/2
INCH SHOULD PREVAIL WEST OF THE MOUNTAINS...WITH LOCAL RAINFALL OF
ONE INCH OR MORE IN THE MOUNTAINS. SNOW LEVELS WILL BE MOSTLY
6000-7000 FEET...SO SEVERAL INCHES COULD FALL IN THE HIGHER
MOUNTAINS...MAINLY SBD COUNTY.

HIGH PRESSURE ALOFT SHOULD BRING FAIR WEATHER EARLY NEXT WEEK WITH
TEMPS RECOVERING TO NEAR NORMAL BY AROUND TUESDAY.

&&

.AVIATION...
040400Z...COASTS/VALLEYS...STRATUS WITH BASES 800-1500 FT MSL WILL
CONTINUE TO FILL IN ALONG THE COAST THIS EVENING...SPREADING 20-25
MI INLAND THROUGH SUNRISE. LOCAL VIS OF 3-5SM IN BR/HZ POSSIBLE
WHERE STRATUS NEARS HIGHER TERRAIN IN THE VALLEYS. STRATUS WILL
SLOWLY CLEAR INLAND 16-18Z...WITH COASTAL AREAS REMAINING SCT-BKN
AND BASES LIFTING TO AROUND 2000-2500 FT MSL THROUGH THE AFTERNOON.
STRATUS WILL BEGIN TO MOVE BACK INLAND AFTER 05/03Z.

MOUNTAINS/DESERTS....SCT CLOUDS AOA 20000 FT MSL AND UNRESTRICTED
VIS THROUGH WEDNESDAY EVENING.

&&

.MARINE...
915 PM...A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
THURSDAY AFTERNOON THROUGH FRIDAY NIGHT. THESE STORMS COULD PRODUCE
CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS. OTHERWISE...NO
HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SKYWARN...
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.
&&

$$

PUBLIC...GREGORIA/MAXWELL
AVIATION/MARINE...SS





000
FXUS66 KSGX 032039
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
200 PM PDT TUE MAY 3 2016

.SYNOPSIS...
EXCEPT FOR MILD CONDITIONS AND SOME CLOUDS ALONG THE COAST...SUNNY
AND WARM WEATHER WILL PREVAIL THIS AFTERNOON UNDER HIGH PRESSURE. A
LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE WEST AND RESULT IN
COOLING AND MORE CLOUDS WEDNESDAY...WITH PRECIPITATION POSSIBLE
THURSDAY THROUGH THE WEEKEND. A FEW THUNDERSTORMS COULD
OCCUR...ESPECIALLY FRIDAY WHEN THE SYSTEM IS OVERHEAD. IT WILL BE
COOL THURSDAY THROUGH THE WEEKEND...THEN FAIR WEATHER WITH A WARMING
TREND WILL OCCUR EARLY NEXT WEEK AS A HIGH PRESSURE RIDGE MOVES IN
FROM THE WEST.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

STRATUS COVERED THE BEACHES ALONG MANY PARTS OF SAN DIEGO
COUNTY...WITH MOSTLY CLEAR SKIES ELSEWHERE THIS AFTERNOON. IT WAS
QUITE WARM INLAND...WITH TEMPS AS HIGH AS 96 AT THERMAL AND 91 AT A
FEW LOCATIONS IN THE INLAND EMPIRE...AS OF 100 PM.

THE UPPER LOW CURRENTLY NEAR 34N/132W...SHOULD START TO LOWER
HEIGHTS/TEMPS ALOFT OVER SO-CAL TONIGHT. THAT WILL START TO DEEPEN
OUR MARINE LAYER AND RESULT IN STRATUS BEING MORE LIKELY IN THE
VALLEYS IN THE LATE NIGHTS AND EARLY MORNINGS. THE ONSHORE FLOW WILL
INCREASE AND BRING A COOLING TREND TO MOST AREAS WEST OF THE
MOUNTAINS WEDENSDAY. RIGHT NOW...IT LOOKS LIKE ONLY ENOUGH MOISTURE
IN THE MARINE LAYER FOR DRIZZLE WILL OCCUR WED NIGHT/THU MORNING.
SHOWERS COULD START THURSDAY AFTERNOON AND PEAK FRIDAY WHEN THE
UPPER LOW IS RIGHT OVER US AND THE MOIST LAYER IS DEEPEST...BUT THE
LOW WILL MOVE SLOW ENOUGH THAT SOME SHOWERS COULD OCCUR OVER THE
WEEKEND...ESPECIALLY IN THE MOUNTAINS. THUNDERSTORM CHANCES WILL BE
BEST FRIDAY WITH THE COLD AIR AND THE LOW DIRECTLY OVER US...WITH
500 MB TEMPS APPROACHING -25 C. A THUNDERSTORM COULD HAPPEN SAT
AFTERNOON AS WELL MAINLY OVER THE MOUNTAINS. AS THE SUN ANGLE IS
HIGH ENOUGH TO RESULT IN INSTABILITY FROM DAYTIME HEATING...EVEN
THOUGH THERE WILL BE A LITTLE LESS COLD AIR ALOFT. AT OTHER
TIMES...WE WILL RELY ON THE ONSHORE FLOW CAUSING LIFTING OF A LOW-
LEVEL NEAR-SATURATED LAYER OVER THE TERRAIN TO BRING SOME
PRECIPITATION. PRECIP AMOUNTS ARE HARD TO PEG AT THIS POINT AS IT
WILL VARY FROM POINT-TO-POINT...BUT GENERALLY 1/4 TO 1/2 INCH SHOULD
PREVAIL WEST OF THE MOUNTAINS...WITH LOCAL RAINFALL OF ONE INCH OR
MORE IN THE MOUNTAINS. SNOW LEVELS WILL BE MOSTLY 6000-7000
FEET...SO SEVERAL INCHES COULD FALL IN THE HIGHER MOUNTAINS...MAINLY
SBD COUNTY.

HIGH PRESSURE ALOFT SHOULD BRING FAIR WEATHER EARLY NEXT WEEK WITH
TEMPS RECOVERING TO NEAR NORMAL BY AROUND TUESDAY.

&&

.AVIATION...
032030Z...A FEW HIGH CLOUDS AOA 15000 FT MSL WILL CONTINUE TO PUSH
ACROSS THE REGION THROUGH THIS AFTERNOON. THE STRATUS MARINE LAYER
WILL RETURN TONIGHT AND BEGIN TO FILL THE COASTAL BASIN AFT
04/0300Z. BASES WILL BE AROUND 1500 FT MSL AND TOPS 2200-2500 FT
MSL...REDUCING VIS ON THE LOWER COASTAL SLOPES. THESE CLOUDS WILL BE
SLOW TO CLEAR TOMORROW...IF AT ALL...OVER COASTAL TAF SITES.

&&

.MARINE...
130 PM...A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
THURSDAY AFTERNOON THROUGH FRIDAY NIGHT. THESE STORMS COULD PRODUCE
CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS. OTHERWISE...NO
HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SKYWARN...
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.
&&

$$

PUBLIC...MAXWELL
AVIATION/MARINE...JT





000
FXUS66 KSGX 032039
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
200 PM PDT TUE MAY 3 2016

.SYNOPSIS...
EXCEPT FOR MILD CONDITIONS AND SOME CLOUDS ALONG THE COAST...SUNNY
AND WARM WEATHER WILL PREVAIL THIS AFTERNOON UNDER HIGH PRESSURE. A
LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE WEST AND RESULT IN
COOLING AND MORE CLOUDS WEDNESDAY...WITH PRECIPITATION POSSIBLE
THURSDAY THROUGH THE WEEKEND. A FEW THUNDERSTORMS COULD
OCCUR...ESPECIALLY FRIDAY WHEN THE SYSTEM IS OVERHEAD. IT WILL BE
COOL THURSDAY THROUGH THE WEEKEND...THEN FAIR WEATHER WITH A WARMING
TREND WILL OCCUR EARLY NEXT WEEK AS A HIGH PRESSURE RIDGE MOVES IN
FROM THE WEST.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

STRATUS COVERED THE BEACHES ALONG MANY PARTS OF SAN DIEGO
COUNTY...WITH MOSTLY CLEAR SKIES ELSEWHERE THIS AFTERNOON. IT WAS
QUITE WARM INLAND...WITH TEMPS AS HIGH AS 96 AT THERMAL AND 91 AT A
FEW LOCATIONS IN THE INLAND EMPIRE...AS OF 100 PM.

THE UPPER LOW CURRENTLY NEAR 34N/132W...SHOULD START TO LOWER
HEIGHTS/TEMPS ALOFT OVER SO-CAL TONIGHT. THAT WILL START TO DEEPEN
OUR MARINE LAYER AND RESULT IN STRATUS BEING MORE LIKELY IN THE
VALLEYS IN THE LATE NIGHTS AND EARLY MORNINGS. THE ONSHORE FLOW WILL
INCREASE AND BRING A COOLING TREND TO MOST AREAS WEST OF THE
MOUNTAINS WEDENSDAY. RIGHT NOW...IT LOOKS LIKE ONLY ENOUGH MOISTURE
IN THE MARINE LAYER FOR DRIZZLE WILL OCCUR WED NIGHT/THU MORNING.
SHOWERS COULD START THURSDAY AFTERNOON AND PEAK FRIDAY WHEN THE
UPPER LOW IS RIGHT OVER US AND THE MOIST LAYER IS DEEPEST...BUT THE
LOW WILL MOVE SLOW ENOUGH THAT SOME SHOWERS COULD OCCUR OVER THE
WEEKEND...ESPECIALLY IN THE MOUNTAINS. THUNDERSTORM CHANCES WILL BE
BEST FRIDAY WITH THE COLD AIR AND THE LOW DIRECTLY OVER US...WITH
500 MB TEMPS APPROACHING -25 C. A THUNDERSTORM COULD HAPPEN SAT
AFTERNOON AS WELL MAINLY OVER THE MOUNTAINS. AS THE SUN ANGLE IS
HIGH ENOUGH TO RESULT IN INSTABILITY FROM DAYTIME HEATING...EVEN
THOUGH THERE WILL BE A LITTLE LESS COLD AIR ALOFT. AT OTHER
TIMES...WE WILL RELY ON THE ONSHORE FLOW CAUSING LIFTING OF A LOW-
LEVEL NEAR-SATURATED LAYER OVER THE TERRAIN TO BRING SOME
PRECIPITATION. PRECIP AMOUNTS ARE HARD TO PEG AT THIS POINT AS IT
WILL VARY FROM POINT-TO-POINT...BUT GENERALLY 1/4 TO 1/2 INCH SHOULD
PREVAIL WEST OF THE MOUNTAINS...WITH LOCAL RAINFALL OF ONE INCH OR
MORE IN THE MOUNTAINS. SNOW LEVELS WILL BE MOSTLY 6000-7000
FEET...SO SEVERAL INCHES COULD FALL IN THE HIGHER MOUNTAINS...MAINLY
SBD COUNTY.

HIGH PRESSURE ALOFT SHOULD BRING FAIR WEATHER EARLY NEXT WEEK WITH
TEMPS RECOVERING TO NEAR NORMAL BY AROUND TUESDAY.

&&

.AVIATION...
032030Z...A FEW HIGH CLOUDS AOA 15000 FT MSL WILL CONTINUE TO PUSH
ACROSS THE REGION THROUGH THIS AFTERNOON. THE STRATUS MARINE LAYER
WILL RETURN TONIGHT AND BEGIN TO FILL THE COASTAL BASIN AFT
04/0300Z. BASES WILL BE AROUND 1500 FT MSL AND TOPS 2200-2500 FT
MSL...REDUCING VIS ON THE LOWER COASTAL SLOPES. THESE CLOUDS WILL BE
SLOW TO CLEAR TOMORROW...IF AT ALL...OVER COASTAL TAF SITES.

&&

.MARINE...
130 PM...A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
THURSDAY AFTERNOON THROUGH FRIDAY NIGHT. THESE STORMS COULD PRODUCE
CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS. OTHERWISE...NO
HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SKYWARN...
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.
&&

$$

PUBLIC...MAXWELL
AVIATION/MARINE...JT





000
FXUS66 KSGX 031611
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
900 AM PDT TUE MAY 3 2016

.SYNOPSIS...
EXCEPT FOR MILD CONDITIONS AND SOME CLOUDS ALONG THE COAST...SUNNY
AND WARM WEATHER WILL PREVAIL TODAY UNDER HIGH PRESSURE. A LOW
PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE WEST AND RESULT IN
COOLING AND MORE CLOUDS WEDNESDAY...WITH PRECIPITATION POSSIBLE
THURSDAY THROUGH THE WEEKEND. A FEW THUNDERSTORMS COULD
OCCUR...ESPECIALLY FRIDAY WHEN THE SYSTEM IS OVERHEAD. IT WILL BE
COOL THURSDAY THROUGH THE WEEKEND...THEN FAIR WEATHER WITH A WARMING
TREND WILL OCCUR EARLY NEXT WEEK.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

AREAS OF STRATUS AND FOG OCCURRED NEAR THE COAST AS THE MARINE LAYER
DEPTH HAD LOWERED TO AROUND 1100-1200 FEET MSL. THE IMMEDIATE COAST
OF SAN DIEGO COUNTY REMAINED CLOUDY AT 9 AM...BUT MOST OTHER AREAS
HAD CLEARED. TODAY SHOULD BE THE WARMEST DAY OF THE WEEK AS THE
PROFILE IS WARMER...MOSTLY BY 2-4 DEG C BETWEEN 500 AND 950 MB. THE
INFLUENCE OF THE UPPER LOW...CURRENTLY NEAR 33N/133W...IS NOT YET
UPON US. THE LOWER DESERTS SHOULD HAVE MID TO UPPER 90S...WITH A FEW
TEMPS NEAR 90 IN THE WARMEST PART OF THE INLAND EMPIRE. THE ONLY
EXCEPTION WOULD BE THE IMMEDIATE COAST AS THE MARINE LAYER IS
DEVELOPING...THOUGH WITH THE MARINE INVERSION ONLY ABOUT 6 DEG C
STRONG...COASTAL AREAS SHOULD STILL CLEAR LATER TODAY.

THAT UPPER LOW TO OUR WEST SHOULD START TO LOWER HEIGHTS/TEMPS ALOFT
TONIGHT. THAT WILL START TO DEEPEN OUR MARINE LAYER AND RESULT IN
STRATUS BEING MORE LIKELY IN THE VALLEYS IN THE LATE NIGHTS AND
EARLY MORNINGS. THE ONSHORE FLOW WILL INCREASE AND BRING A COOLING
TREND TO MOST AREAS WEST OF THE MOUNTAINS WEDENSDAY. PRECIP COULD
START THURSDAY AND PEAK FRIDAY WHEN THE UPPER LOW IS RIGHT OVER US
AND THE MOIST LAYER IS DEEPEST...BUT THE LOW WILL MOVE SLOW ENOUGH
THAT SOME SHOWERS COULD OCCUR OVER THE WEEKEND...ESPECIALLY IN THE
MOUNTAINS. THUNDERSTORM CHANCES WILL BE BEST FRIDAY...BUT COULD
HAPPEN THU AND SAT AFTERNOONS/EARLY EVENINGS AS THE SUN ANGLE IS
HIGH ENOUGH TO RESULT IN INSTABILITY FROM DAYTIME HEATING. AT OTHER
TIMES OF DAY...WE WILL RELY ON THE ONSHORE FLOW CAUSING LIFTING OF A
LOW-LEVEL NEAR-SATURATED LAYER OVER THE TERRAIN TO BRING SOME
PRECIPITATION. PRECIP AMOUNTS ARE HARD TO PEG AT THIS POINT AS IT
WILL VARY FROM POINT-TO-POINT...BUT GENERALLY 1/4 TO 1/2 INCH SHOULD
PREVAIL WEST OF THE MOUNTAINS...WITH LOCAL RAINFALL OF ONE INCH OR
MORE IN THE MOUNTAINS. SNOW LEVELS WILL BE MOSTLY 6000-7000
FEET...SO A FEW INCHES COULD FALL IN THE HIGHER MOUNTAINS...MAINLY
SBD COUNTY...THOUGH MOISTURE WILL NOT BE AS GOOD ABOVE 800 MB.

HIGH PRESSURE ALOFT SHOULD BRING FAIR WEATHER EARLY NEXT WEEK WITH
TEMPS RECOVERING TO NEAR NORMAL BY AROUND TUESDAY.

&&

.AVIATION...
031530Z...LOW CLOUDS AND FOG HAVE ERODED BACK TO THE BEACHES AND
IMMEDIATE COASTAL ZONES. SKC CONDS ELSEWHERE ACROSS THE REGION. THE
STRATUS MARINE LAYER WILL RETURN TONIGHT AND BEGIN TO FILL THE
COASTAL BASIN AFT 04/0300Z. BASES WILL BE AROUND 1500 FT MSL AND
TOPS 2200-2500 FT MSL. VIS WILL BE REDUCED WHERE THE LOW CLOUDS
INTERSECT TERRAIN ON THE LOWER COASTAL SLOPES.

&&

.MARINE...
830 AM...A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
THURSDAY AFTERNOON THROUGH FRIDAY NIGHT. THESE STORMS COULD PRODUCE
CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS. OTHERWISE...NO
HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SKYWARN...
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.
&&

$$

PUBLIC...MAXWELL
AVIATION/MARINE...JT





000
FXUS66 KSGX 031611
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
900 AM PDT TUE MAY 3 2016

.SYNOPSIS...
EXCEPT FOR MILD CONDITIONS AND SOME CLOUDS ALONG THE COAST...SUNNY
AND WARM WEATHER WILL PREVAIL TODAY UNDER HIGH PRESSURE. A LOW
PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE WEST AND RESULT IN
COOLING AND MORE CLOUDS WEDNESDAY...WITH PRECIPITATION POSSIBLE
THURSDAY THROUGH THE WEEKEND. A FEW THUNDERSTORMS COULD
OCCUR...ESPECIALLY FRIDAY WHEN THE SYSTEM IS OVERHEAD. IT WILL BE
COOL THURSDAY THROUGH THE WEEKEND...THEN FAIR WEATHER WITH A WARMING
TREND WILL OCCUR EARLY NEXT WEEK.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

AREAS OF STRATUS AND FOG OCCURRED NEAR THE COAST AS THE MARINE LAYER
DEPTH HAD LOWERED TO AROUND 1100-1200 FEET MSL. THE IMMEDIATE COAST
OF SAN DIEGO COUNTY REMAINED CLOUDY AT 9 AM...BUT MOST OTHER AREAS
HAD CLEARED. TODAY SHOULD BE THE WARMEST DAY OF THE WEEK AS THE
PROFILE IS WARMER...MOSTLY BY 2-4 DEG C BETWEEN 500 AND 950 MB. THE
INFLUENCE OF THE UPPER LOW...CURRENTLY NEAR 33N/133W...IS NOT YET
UPON US. THE LOWER DESERTS SHOULD HAVE MID TO UPPER 90S...WITH A FEW
TEMPS NEAR 90 IN THE WARMEST PART OF THE INLAND EMPIRE. THE ONLY
EXCEPTION WOULD BE THE IMMEDIATE COAST AS THE MARINE LAYER IS
DEVELOPING...THOUGH WITH THE MARINE INVERSION ONLY ABOUT 6 DEG C
STRONG...COASTAL AREAS SHOULD STILL CLEAR LATER TODAY.

THAT UPPER LOW TO OUR WEST SHOULD START TO LOWER HEIGHTS/TEMPS ALOFT
TONIGHT. THAT WILL START TO DEEPEN OUR MARINE LAYER AND RESULT IN
STRATUS BEING MORE LIKELY IN THE VALLEYS IN THE LATE NIGHTS AND
EARLY MORNINGS. THE ONSHORE FLOW WILL INCREASE AND BRING A COOLING
TREND TO MOST AREAS WEST OF THE MOUNTAINS WEDENSDAY. PRECIP COULD
START THURSDAY AND PEAK FRIDAY WHEN THE UPPER LOW IS RIGHT OVER US
AND THE MOIST LAYER IS DEEPEST...BUT THE LOW WILL MOVE SLOW ENOUGH
THAT SOME SHOWERS COULD OCCUR OVER THE WEEKEND...ESPECIALLY IN THE
MOUNTAINS. THUNDERSTORM CHANCES WILL BE BEST FRIDAY...BUT COULD
HAPPEN THU AND SAT AFTERNOONS/EARLY EVENINGS AS THE SUN ANGLE IS
HIGH ENOUGH TO RESULT IN INSTABILITY FROM DAYTIME HEATING. AT OTHER
TIMES OF DAY...WE WILL RELY ON THE ONSHORE FLOW CAUSING LIFTING OF A
LOW-LEVEL NEAR-SATURATED LAYER OVER THE TERRAIN TO BRING SOME
PRECIPITATION. PRECIP AMOUNTS ARE HARD TO PEG AT THIS POINT AS IT
WILL VARY FROM POINT-TO-POINT...BUT GENERALLY 1/4 TO 1/2 INCH SHOULD
PREVAIL WEST OF THE MOUNTAINS...WITH LOCAL RAINFALL OF ONE INCH OR
MORE IN THE MOUNTAINS. SNOW LEVELS WILL BE MOSTLY 6000-7000
FEET...SO A FEW INCHES COULD FALL IN THE HIGHER MOUNTAINS...MAINLY
SBD COUNTY...THOUGH MOISTURE WILL NOT BE AS GOOD ABOVE 800 MB.

HIGH PRESSURE ALOFT SHOULD BRING FAIR WEATHER EARLY NEXT WEEK WITH
TEMPS RECOVERING TO NEAR NORMAL BY AROUND TUESDAY.

&&

.AVIATION...
031530Z...LOW CLOUDS AND FOG HAVE ERODED BACK TO THE BEACHES AND
IMMEDIATE COASTAL ZONES. SKC CONDS ELSEWHERE ACROSS THE REGION. THE
STRATUS MARINE LAYER WILL RETURN TONIGHT AND BEGIN TO FILL THE
COASTAL BASIN AFT 04/0300Z. BASES WILL BE AROUND 1500 FT MSL AND
TOPS 2200-2500 FT MSL. VIS WILL BE REDUCED WHERE THE LOW CLOUDS
INTERSECT TERRAIN ON THE LOWER COASTAL SLOPES.

&&

.MARINE...
830 AM...A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
THURSDAY AFTERNOON THROUGH FRIDAY NIGHT. THESE STORMS COULD PRODUCE
CLOUD TO WATER LIGHTNING AND BRIEF GUSTY WINDS. OTHERWISE...NO
HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.

&&

.SKYWARN...
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.
&&

$$

PUBLIC...MAXWELL
AVIATION/MARINE...JT





000
FXUS66 KSGX 031028
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
328 AM PDT TUE MAY 3 2016

.SYNOPSIS...
THROUGH WEDNESDAY...A COOLING TREND WILL DEVELOP NEAR THE COAST
AND SPREAD INLAND AS A SLOW MOVING LOW PRESSURE SYSTEM OVER THE
EASTERN PACIFIC MOVES TOWARD THE CALIFORNIA COAST. THE MARINE
LAYER WILL DEEPEN SIGNIFICANTLY WEDNESDAY NIGHT INTO THURSDAY WITH
LIGHT SHOWERS DEVELOPING ALONG AND WEST OF THE MOUNTAINS LATE
WEDNESDAY NIGHT INTO THURSDAY. FOR THURSDAY AFTERNOON THROUGH
FRIDAY NIGHT...THE LOW PRESSURE SYSTEM WILL MOVE INLAND THROUGH
SOUTHERN CALIFORNIA AND INTO THE SOUTHWEST STATES WITH SCATTERED
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS WITH GUSTY WEST WINDS
FOR THE MOUNTAINS THURSDAY AND FRIDAY. THE CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS WILL CONTINUE INTO THE
WEEKEND...MAINLY DURING THE AFTERNOON AND EARLY EVENING WITH
GREATEST COVERAGE OVER THE MOUNTAINS.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

EARLY THIS MORNING...SATELLITE IMAGERY SHOWS AREAS OF STRATUS OFF
THE SAN DIEGO COUNTY COAST WITH PATCHY STRATUS EXTENDING INLAND
INTO AREAS NEAR THE ORANGE AND SAN DIEGO COUNTY COAST. NOT MUCH
INLAND SPREAD OF THE STRATUS IS EXPECTED EARLY THIS MORNING WITH
EASTERLY LOWER LEVEL FLOW ABOVE THE STRATUS.

FOR TODAY AND WEDNESDAY...A LOW PRESSURE SYSTEM OVER THE EASTERN
PACIFIC WILL MOVE TOWARDS THE CALIFORNIA COAST WITH INCREASING
HIGH CLOUDS AND INCREASING ONSHORE FLOW. COOLING WILL SPREAD
INLAND TODAY AND WEDNESDAY WITH GUSTY WEST WINDS IN THE MOUNTAINS
AND DESERTS WEDNESDAY. GREATER STRATUS COVERAGE IS EXPECTED FOR
TONIGHT INTO WEDNESDAY MORNING WITH STRATUS EXTENDING INTO THE
WESTERN VALLEYS.

FOR WEDNESDAY NIGHT INTO THURSDAY MORNING...MORE SIGNIFICANT
DEEPENING OF THE MARINE LAYER IS EXPECTED WITH STRATUS PUSHING
ONTO THE LOWER COASTAL MOUNTAIN SLOPES. HIGHER RESOLUTION MODELS
CONTINUE TO SHOW LIGHT SHOWERS DEVELOPING ALONG AND WEST OF THE
MOUNTAINS LATE WEDNESDAY NIGHT INTO THURSDAY AS THE MARINE LAYER
DEEPENS.

THE MODELS ARE IN REASONABLY GOOD AGREEMENT IN MOVING THE CENTER
OF A CLOSED UPPER LEVEL LOW PRESSURE SYSTEM FROM JUST OFF THE
CENTRAL CALIFORNIA COAST EARLY THURSDAY...THROUGH SOUTHERN
CALIFORNIA ON FRIDAY...TO NEAR LAS VEGAS FOR SATURDAY AND SATURDAY
NIGHT...WITH THE LOW PRESSURE SYSTEM THEN WEAKENING AND MOVING
EAST FOR SUNDAY AND MONDAY.

HIGHER RESOLUTION MODELS SHOW SCATTERED SHOWERS...MAINLY ALONG AND
WEST OF THE MOUNTAINS...FOR THURSDAY AFTERNOON AND NIGHT.
SCATTERED SHOWERS WILL CONTINUE FOR FRIDAY AND FRIDAY NIGHT. THE
COLDEST AIR AT 500 MB BEGINS TO SPREAD INTO FAR SOUTHERN
CALIFORNIA ON THURSDAY AFTERNOON WITH THE COLDEST AIR ALOFT FOR
THURSDAY NIGHT AND FRIDAY. THERE IS A SLIGHT CHANCE OF
THUNDERSTORMS FOR WESTERN PORTIONS OF SOUTHERN CALIFORNIA THURSDAY
AFTERNOON...AND ALMOST ANYWHERE ACROSS FAR SOUTHERN CALIFORNIA
THURSDAY NIGHT FRIDAY.

DUE TO THE CONVECTIVE NATURE OF THE PRECIPITATION...PRECIPITATION
AMOUNTS WILL BE SOMEWHAT VARIABLE...BUT RAINFALL IS EXPECTED TO
RANGE FROM AROUND ONE QUARTER INCH NEAR THE COAST TO ONE HALF TO
ONE INCH IN THE MOUNTAINS THROUGH FRIDAY EVENING. BRIEF HEAVY
DOWNPOURS ARE POSSIBLE ALONG AND WEST OF THE MOUNTAINS THURSDAY
NIGHT AND FRIDAY IN BANDS OF SHOWERS AND IN ISOLATED
THUNDERSTORMS.

THE SNOW LEVEL WILL LOWER TO AROUND 6500 FEET THURSDAY NIGHT AND
6000 TO 6500 FEET FRIDAY AND FRIDAY NIGHT. SNOWFALL OF 4 TO 8
INCHES IS POSSIBLE...MAINLY ABOVE 6500 TO 7000 FEET THURSDAY NIGHT
AND FRIDAY.

FOR SATURDAY AND SUNDAY...SCATTERED SHOWERS WILL CONTINUE AND ARE
MORE LIKELY DURING THE AFTERNOON AND EARLY EVENING EACH DAY WITH
GREATER COVERAGE OVER THE MOUNTAINS. THE SLIGHT CHANCE OF
THUNDERSTORMS WILL CONTINUE FOR SATURDAY AFTERNOON AND EARLY
EVENING WITH MAINLY SHOWERS FOR SUNDAY AS THE COLDER AIR ALOFT
MOVES EAST. DRY AND WARMER FOR EARLY NEXT WEEK AS THE LOW PRESSURE
SYSTEM WEAKENS AND MOVES EAST.

&&

.AVIATION...
030900Z...AREAS OF LOW CLOUDS WILL CONTINUE TO DEVELOP MAINLY NEAR
THE COAST WITH BASES 1000-1500 FEET MSL AND TOPS TO 2200 FEET. LOCAL
VIS AOB 5SM ALONG INLAND EXTENT AND ON HIGHER COASTAL TERRAIN.
SCATTER OUT BY 15-17Z. LOW CLOUDS WITH SIMILAR BASES AND TOPS WILL
DEVELOP ALONG THE COAST AGAIN OVERNIGHT AFTER 04Z.
OTHERWISE...MOSTLY CLEAR TODAY AND TONIGHT WITH SOME HIGH CLOUDS
LATE IN THE DAY.

&&

.MARINE...
200 AM...NO HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH SATURDAY.
EXCEPT A STORM SYSTEM WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS
THURSDAY AFTERNOON THROUGH FRIDAY NIGHT.

&&

.SKYWARN...
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.
&&

$$

PUBLIC...17
AVIATION/MARINE...MM





000
FXUS66 KSGX 030406
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
906 PM PDT MON MAY 2 2016

.SYNOPSIS...
DRY AND SLIGHTLY WARMER ON TUESDAY UNDER WEAK HIGH PRESSURE ALOFT.
COOLER ON WEDNESDAY WITH A DEEPENING MARINE LAYER AS A STORM SYSTEM
DEVELOPS AND APPROACHES THE NORTHERN CALIFORNIA COAST. THE STORM
WILL DROP SOUTHEAST OVER SOCAL ON FRIDAY...THEN MOVE SLOWLY OFF TO
THE NORTHEAST. GUSTY WESTERLY WINDS WILL DEVELOP OVER THE MOUNTAINS
AND DESERTS ON THURSDAY WITH SCATTERED SHOWERS AND POSSIBLE
THUNDERSTORMS BREAKING OUT. THE UNSETTLED CONDITIONS WILL CONTINUE
THROUGH SATURDAY...FOLLOWED BY WARMER AND DRIER WEATHER NEXT WEEK.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

CONVECTIVE CLOUDS EARLIER IN THE DAY HAD MOSTLY DISSIPATED BY 9 PM
PDT...BUT IR SATELLITE IMAGERY SHOWED SOME AREAS OF LOW CLOUDS ALONG
THE COAST. THE 00Z MIRAMAR SOUNDING HAD A 5 DEGREE C INVERSION BASED
NEAR 1850 FT. WEST WINDS AROUND 10 KT BELOW THE INVERSION BECAME
EASTERLY AROUND 10 KT ABOVE TO 10K FT. SURFACE PRESSURE GRADIENTS
WERE 2-3 MBS OFFSHORE FROM NV...AND 3-5 MBS ONSHORE TO THE LOWER
DESERTS RESULTING IN MOSTLY LIGHT WINDS.

THERE WAS A CONSIDERABLE AMOUNT OF HAZE THIS EVENING AND DEWPOINTS
HAVE CLIMBED INTO THE MID 50S ALONG THE COASTAL STRIP...SO SOME FOG
WILL LIKELY DEVELOP INLAND BEFORE MARINE CLOUDS BECOME MORE
EXTENSIVE. WEAK EASTERLY FLOW IN THE MID-LEVELS SHOULD HELP
THICKNESS CLIMB TOMORROW UNDER FAIR SKIES. SO AWAY FROM THE
IMMEDIATE COAST...IT WILL BE WARMER.

TUESDAY WILL BE THE WARMEST DAY INLAND...THEN A COOLING TREND SETS
IN AS ONSHORE FLOW STRENGTHENS AND THE MARINE LAYER BUILDS WEDNESDAY
INTO THURSDAY. THERE IS HIGH CONFIDENCE FOR THE DEVELOPMENT OF A
LARGE CUT-OFF LOW PRESSURE CENTER OFF THE NOCAL COAST WED NIGHT...
WITH A TRACK SE...OVER SOCAL BY FRI. AS CYCLONIC FLOW INCREASES OVER
THE REGION AND SURFACE PRESSURE FALLS OVER THE INTERIOR...THE
WESTERLY WINDS WILL BEGIN TO HOWL ONCE AGAIN OVER THE MTS/DESERTS.
THE PATTERN SUGGESTS AT LEAST ADVISORY STRENGTH WINDS IN MANY AREAS.

SINCE THIS STORM IS COMING FROM THE NORTH...MOISTURE WILL BE A BIT
MORE LIMITED (PW 0.65-0.80 INCH)...SO WIDESPREAD HEAVY PRECIP IS NOT
EXPECTED. HOWEVER...IT WILL BE SUFFICIENT FOR ISOLATED HEAVY
RAINFALL EVENTS STARTING SOMETIME ON THU. THE ACTIVITY SHOULD BE
SCATTERED AND DRIVEN BY IMPULSES OF ENERGY SWIRLING AROUND THE LARGE
AREA OF LOW PRESSURE ALOFT. THUNDERSTORMS ARE EXPECTED AT TIMES DUE
TO THE INSTABILITY AND COLD AIR ALOFT THROUGH SATURDAY. THE SNOW
LEVEL WILL START OUT AROUND 7000 FEET..THEN DROP CLOSER TO 6000
FEET...AND BRIEFLY LOWER IN THUNDERSTORMS. THIS UNSETTLED SPRINGTIME
PATTERN SUGGESTS WATERSPOUTS WILL BE POSSIBLE AS WELL.

TEMPERATURES WILL DROP THROUGH FRIDAY...THE COLDEST DAY OF THE WEEK
WHEN TEMPERATURES WILL NOT REACH THE 70S...EXCEPT IN THE LOWER
DESERTS. DRY WITH GRADUAL WARMING SUNDAY THROUGH TUESDAY AS THE
STORM LOSES ITS GRIP ON THE REGION.

&&

.AVIATION...

030320Z...PATCHY STRATUS WITH BASES 1000-1500 FT MSL WILL CONTINUE
TO DEVELOP ALONG THE COAST AND SPREAD AND SPREAD 20-25 MI INLAND BY
12Z. LOW CONFIDENCE IN TIMING OF ONSET AT KSAN AND KSNA. LOCAL VIS
OF 3-5SM POSSIBLE WHERE STRATUS NEARS HIGHER TERRAIN IN THE VALLEYS.
STRATUS CLEARING 17-19Z...RETURNING TO THE COASTAL AIRPORTS AFTER
04/02Z WITH BASES NEAR 1500 FT MSL.

MOUNTAINS/DESERTS...MOSTLY CLEAR WITH UNRESTRICTED VIS THROUGH TUE
EVENING.

&&

.MARINE...
830 PM...NO HAZARDOUS MARINE WEATHER IS EXPECTED THROUGH WEDNESDAY.
A STORM SYSTEM WILL BRING WIND GUSTS AROUND 25 KT AND CHOPPY SEAS
THURSDAY NIGHT INTO FRIDAY...AS WELL AS SHOWERS AND POSSIBLE
THUNDERSTORMS ON FRIDAY.

&&

.SKYWARN...
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.
&&

$$

PUBLIC...JAD
AVIATION/MARINE...SS





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