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000
FXUS66 KEKA 282245
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
345 PM PDT THU AUG 28 2014

.SYNOPSIS...CLEAR CONDITIONS WILL PERSIST ACROSS INTERIOR NW
CALIFORNIA TONIGHT WHILE LOW CLOUDS AND FOG REASSERT THEMSELVES
ALONG THE COAST. AN UPPER TROUGH APPROACHING FROM THE NW WILL
BRING A COOLING TREND TO THE AREA THROUGH SATURDAY. ANOTHER
WARMING TREND WILL OCCUR DURING THE FIRST HALF OF NEXT WEEK.

&&

.DISCUSSION...AFTERNOON WATER VAPOR IMAGERY SHOWS A STRETCHING
SMALL UPPER LOW OVER NW CALIFORNIA. THIS CAUSED SOME HIGH CLOUDS
TODAY, BUT THAT`S ABOUT IT. THE UPPER RIDGE TO THE SOUTH IS
ATTEMPTING TO REASSERT ITS DOMINANCE BY NOSING BACK NORTHWARD, BUT
A LARGE UPPER TROUGH OVER THE GULF OF ALASKA IS BATTLING FOR THE
SAME POSITION. MODELS CONTINUE TO SHOW THE UPPER TROUGH WINNING
OUT THROUGH THE FIRST HALF OF THE WEEK. HOWEVER, THIS RIDGE WILL
NOT LEAVE QUIETLY. EXPECT ANOTHER NIGHT OF LOW CLOUDS AND FOG
ALONG THE COAST WITH AREAS OF DRIZZLE. FOG IS EXPECTED TO BE
LOCALLY DENSE AGAIN AS THE UPPER AND SURFACE RIDGES SUPPRESS THE
MARINE LAYER DOWN TO THE LOWEST FEW HUNDRED FEET. BY FRIDAY THE
TROUGH WILL BEGIN TO SWEEP THROUGH WHICH WILL CAUSE A DEEPENING
MARINE LAYER THROUGH FRIDAY NIGHT. THIS MAY ALLOW FOR DEEPER
PENETRATION OF COASTAL FOG AND STRATUS TO THE INTERIOR.
OTHERWISE, THIS TROUGH IS NOT EXPECTED TO DO MUCH MORE THAN BRING
A SLIGHT COOL DOWN TO THE INTERIOR. MODELS ARE IN DECENT AGREEMENT
THAT ANOTHER RIDGE WILL TRANSIT INTO THE REGION BY EARLY NEXT WEEK
WHICH WILL BRING A WARMING AND DRYING TREND FOR A FEW DAYS BEFORE
ANOTHER UPPER TROUGH SLIPS INTO THE AREA. AT THIS TIME THERE
APPEARS TO BE NO ORGANIZED SYSTEMS WHICH WOULD BRING US ANY THREAT
OF THUNDERSTORMS. THE MOST THE MOUNTAINS WILL HAVE TO DEAL WITH
ARE GUSTY RIDGELINE WINDS AS THIS TROUGH PASSES. FORECAST-WISE
CONTINUED WITH THE ONGOING FORECAST AS THINGS SEEM TO BE ON TRACK.
THE MOST SIGNIFICANT CHANGE WAS OVERNIGHT TONIGHT TO ADD DRIZZLE
ALONG THE REDWOOD COAST UNDER A TIGHTLY BOUND MARINE LAYER. BFG

&&

.AVIATION...COASTAL AIRFIELD CONDITIONS TODAY WERE VERY SIMILAR TO
YESTERDAY WITH MUCH OF THE COAST INUNDATED WITH STRATUS AND
INTERMITTENT CLEARING IN THE AFTERNOON. STRATUS WILL RETURN TO ANY
SCATTERED AREAS BY EARLY THIS EVENING. EXPECT LOW CEILINGS AND
VISIBILITIES (IFR TO LIFR) TO RETURN AGAIN TONIGHT AS RIDGING
MAINTAINS A STRONGER MARINE INVERSION. SOUTHWESTERLY FLOW ALOFT
ALLOWED SMOKE FROM FIRES IN SISKIYOU TO DRIFT OUT OF THE AREA
TODAY. VFR WILL PREVAIL ACROSS THE INTERIOR WITH HIGH PRESSURE IN
PLACE. HOWEVER SOME AIRFIELDS NEAR SISKIYOU FIRES MAY SEE SOME
SMOKE OVERNIGHT AS WINDS ALOFT WEAKEN AND TURN N TO NE. RPAKML


&&

.MARINE...NORTHERLY WINDS WILL INCREASE OVERNIGHT THROUGH FRIDAY
AFTERNOON AS THE RIDGE OFFSHORE AND THE THERMAL TROUGH OVER
CALIFORNIA INTERACT AND STRENGTHEN THE COASTAL PRESSURE GRADIENT.
THE 20Z ASCAT PASS SHOWED LIGHT WINDS OFFSHORE SO THE ADVISORIES
WERE POSTPONED UNTIL 10 PM TONIGHT. THE STRONGEST WINDS AND
HIGHEST SEAS SHOULD REMAIN OFFSHORE, HOWEVER, STEEP SEAS MAY
PROPAGATE INTO THE INNER WATERS. A BRIEF DECREASE IN NORTHERLY
WINDS MAY OCCUR ON SATURDAY ACROSS THE NORTHERN WATERS YET WINDS
ARE EXPECTED TO REMAIN HIGHER SOUTH OF CAPE MENDOCINO. BY EARLY
NEXT WEEK, STRONG RIDGING OFF THE WEST COAST WILL BRING NEAR GALE
CONDITIONS ACROSS THE COASTAL WATERS THROUGH THE MIDDLE OF NEXT
WEEK.

SOUTHERLY SWELL CONTINUES TO MOVE THROUGH THE WATERS ORIGINATING
FROM NOW DOWNGRADED TROPICAL STORM MARIE. THIS SWELL WILL SUBSIDE
THROUGH FRIDAY DECREASING THE THREAT OF STRONGER CURRENTS. RPAKML


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...SMALL CRAFT ADVISORY FROM 10 PM THIS EVENING TO 3 AM PDT
     SATURDAY PZZ470-475.

&&

$$

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000
FXUS66 KEKA 282245
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
345 PM PDT THU AUG 28 2014

.SYNOPSIS...CLEAR CONDITIONS WILL PERSIST ACROSS INTERIOR NW
CALIFORNIA TONIGHT WHILE LOW CLOUDS AND FOG REASSERT THEMSELVES
ALONG THE COAST. AN UPPER TROUGH APPROACHING FROM THE NW WILL
BRING A COOLING TREND TO THE AREA THROUGH SATURDAY. ANOTHER
WARMING TREND WILL OCCUR DURING THE FIRST HALF OF NEXT WEEK.

&&

.DISCUSSION...AFTERNOON WATER VAPOR IMAGERY SHOWS A STRETCHING
SMALL UPPER LOW OVER NW CALIFORNIA. THIS CAUSED SOME HIGH CLOUDS
TODAY, BUT THAT`S ABOUT IT. THE UPPER RIDGE TO THE SOUTH IS
ATTEMPTING TO REASSERT ITS DOMINANCE BY NOSING BACK NORTHWARD, BUT
A LARGE UPPER TROUGH OVER THE GULF OF ALASKA IS BATTLING FOR THE
SAME POSITION. MODELS CONTINUE TO SHOW THE UPPER TROUGH WINNING
OUT THROUGH THE FIRST HALF OF THE WEEK. HOWEVER, THIS RIDGE WILL
NOT LEAVE QUIETLY. EXPECT ANOTHER NIGHT OF LOW CLOUDS AND FOG
ALONG THE COAST WITH AREAS OF DRIZZLE. FOG IS EXPECTED TO BE
LOCALLY DENSE AGAIN AS THE UPPER AND SURFACE RIDGES SUPPRESS THE
MARINE LAYER DOWN TO THE LOWEST FEW HUNDRED FEET. BY FRIDAY THE
TROUGH WILL BEGIN TO SWEEP THROUGH WHICH WILL CAUSE A DEEPENING
MARINE LAYER THROUGH FRIDAY NIGHT. THIS MAY ALLOW FOR DEEPER
PENETRATION OF COASTAL FOG AND STRATUS TO THE INTERIOR.
OTHERWISE, THIS TROUGH IS NOT EXPECTED TO DO MUCH MORE THAN BRING
A SLIGHT COOL DOWN TO THE INTERIOR. MODELS ARE IN DECENT AGREEMENT
THAT ANOTHER RIDGE WILL TRANSIT INTO THE REGION BY EARLY NEXT WEEK
WHICH WILL BRING A WARMING AND DRYING TREND FOR A FEW DAYS BEFORE
ANOTHER UPPER TROUGH SLIPS INTO THE AREA. AT THIS TIME THERE
APPEARS TO BE NO ORGANIZED SYSTEMS WHICH WOULD BRING US ANY THREAT
OF THUNDERSTORMS. THE MOST THE MOUNTAINS WILL HAVE TO DEAL WITH
ARE GUSTY RIDGELINE WINDS AS THIS TROUGH PASSES. FORECAST-WISE
CONTINUED WITH THE ONGOING FORECAST AS THINGS SEEM TO BE ON TRACK.
THE MOST SIGNIFICANT CHANGE WAS OVERNIGHT TONIGHT TO ADD DRIZZLE
ALONG THE REDWOOD COAST UNDER A TIGHTLY BOUND MARINE LAYER. BFG

&&

.AVIATION...COASTAL AIRFIELD CONDITIONS TODAY WERE VERY SIMILAR TO
YESTERDAY WITH MUCH OF THE COAST INUNDATED WITH STRATUS AND
INTERMITTENT CLEARING IN THE AFTERNOON. STRATUS WILL RETURN TO ANY
SCATTERED AREAS BY EARLY THIS EVENING. EXPECT LOW CEILINGS AND
VISIBILITIES (IFR TO LIFR) TO RETURN AGAIN TONIGHT AS RIDGING
MAINTAINS A STRONGER MARINE INVERSION. SOUTHWESTERLY FLOW ALOFT
ALLOWED SMOKE FROM FIRES IN SISKIYOU TO DRIFT OUT OF THE AREA
TODAY. VFR WILL PREVAIL ACROSS THE INTERIOR WITH HIGH PRESSURE IN
PLACE. HOWEVER SOME AIRFIELDS NEAR SISKIYOU FIRES MAY SEE SOME
SMOKE OVERNIGHT AS WINDS ALOFT WEAKEN AND TURN N TO NE. RPAKML


&&

.MARINE...NORTHERLY WINDS WILL INCREASE OVERNIGHT THROUGH FRIDAY
AFTERNOON AS THE RIDGE OFFSHORE AND THE THERMAL TROUGH OVER
CALIFORNIA INTERACT AND STRENGTHEN THE COASTAL PRESSURE GRADIENT.
THE 20Z ASCAT PASS SHOWED LIGHT WINDS OFFSHORE SO THE ADVISORIES
WERE POSTPONED UNTIL 10 PM TONIGHT. THE STRONGEST WINDS AND
HIGHEST SEAS SHOULD REMAIN OFFSHORE, HOWEVER, STEEP SEAS MAY
PROPAGATE INTO THE INNER WATERS. A BRIEF DECREASE IN NORTHERLY
WINDS MAY OCCUR ON SATURDAY ACROSS THE NORTHERN WATERS YET WINDS
ARE EXPECTED TO REMAIN HIGHER SOUTH OF CAPE MENDOCINO. BY EARLY
NEXT WEEK, STRONG RIDGING OFF THE WEST COAST WILL BRING NEAR GALE
CONDITIONS ACROSS THE COASTAL WATERS THROUGH THE MIDDLE OF NEXT
WEEK.

SOUTHERLY SWELL CONTINUES TO MOVE THROUGH THE WATERS ORIGINATING
FROM NOW DOWNGRADED TROPICAL STORM MARIE. THIS SWELL WILL SUBSIDE
THROUGH FRIDAY DECREASING THE THREAT OF STRONGER CURRENTS. RPAKML


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...SMALL CRAFT ADVISORY FROM 10 PM THIS EVENING TO 3 AM PDT
     SATURDAY PZZ470-475.

&&

$$

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HTTP://WWW.FACEBOOK.COM/NWSEUREKA
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000
FXUS66 KEKA 281047
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
347 AM PDT THU AUG 28 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
TODAY...RESULTING IN DRY CONDITIONS AND SLIGHTLY ABOVE NORMAL
TEMPERATURES ACROSS THE INTERIOR. TEMPERATURES WILL TREND DOWNWARD
ON FRIDAY AS THE RIDGE MOVES EAST AND IS REPLACED BY AN UPPER
LEVEL TROUGH. DRY CONDITIONS WILL PERSIST THROUGH THE MIDDLE OF
NEXT WEEK.

&&

.DISCUSSION...1030Z SATELLITE IMAGERY SHOWS STRATUS/FOG ALONG THE
NORTHWEST CALIFORNIA COAST. THE MARINE LAYER DEPTH WILL NOT CHANGE
MUCH TODAY AS THE PRESSURE GRADIENTS AND THERMAL PROFILES REMAIN
ABOUT THE SAME AS YESTERDAY. THEREFORE, EXPECT THE STRATUS/FOG TO
BURN BACK TO THE IMMEDIATE COASTLINE TODAY. HIGHS TODAY SHOULD BE
VERY SIMILAR TO YESTERDAY AS A WARM AIR MASS REMAINS OVER THE
REGION. THE RIDGE ALOFT WILL SHIFT EAST ON FRI AS AN UPPER TROUGH
DIGS OVER THE PAC NW. TEMPERATURES WILL DROP TO NEAR NORMAL FRI
WITH STRONGER WESTERLY FLOW ALOFT. STRATUS/FOG AS WELL AS SMALL
SCALE EDDIES WILL CONTINUE TO BE PROBLEMATIC TO FORECAST THROUGH
THIS TIME PERIOD, SO WILL MAINTAIN A PERSISTENCE FORECAST OF NIGHT
AND MORNING STRATUS/FOG PULLING BACK TO THE IMMEDIATE COASTLINE
EACH AFTERNOON. THE MARINE LAYER MIGHT DEEPEN ON FRI AND SAT AS
THE TROUGH DIGS INTO THE PAC NW. MODELS REMAIN CONSISTENT WITH
RIDGING ALOFT DEVELOPING OFFSHORE ON SUNDAY AND MONDAY, THEN
ANOTHER WEAK UPPER TROUGH APPROACHING THE COAST BY THE MIDDLE OF
NEXT WEEK. THE FORECAST REMAINS LARGELY BASED ON PERSISTENCE AND
CLIMATOLOGY WITH NO STRONG INDICATIONS FROM THE MODELS TO FORECAST
ANY MAJOR CHANGES.

&&

.AVIATION...AN UPPER LEVEL RIDGE OVER THE WEST COAST WILL BE
FLATTENED SLIGHTLY BY A PASSING SHORTWAVE TROUGH MOVING INTO THE
PACIFIC NORTHWEST TODAY. HOWEVER WITH THE RIDGE STILL IN PLACE
SUBSIDENCE SHOULD ALLOW THE MARINE INVERSION TO REMAIN STRONG.
ANOTHER DAY OF LIFR CONDITIONS AT THE COAST CAN BE EXPECTED WITH
SOME BRIEF CLEARING POSSIBLE AT THE NEAR COASTAL TERMINALS AS THE
STRATUS/FOG PULLS BACK TO THE COAST THIS AFTERNOON. THE STRATUS
WILL PUSH BACK ONSHORE THIS EVENING.

VFR WILL PREVAIL ACROSS THE INTERIOR WITH HIGH PRESSURE IN PLACE.
SOUTHWESTERLY FLOW ALOFT SHOULD ALLOW MOST OF THE SMOKE FROM
WILDFIRES IN SISKIYOU COUNTY TO DRIFT AWAY FROM THE AREA TODAY AND
TONIGHT. RPA

&&

.MARINE...A STRENGTHENING THERMAL TROUGH ACROSS THE INTERIOR
TODAY WILL ALLOW NORTHERLY WINDS TO INCREASE OVER THE COASTAL
WATERS. SMALL CRAFT ADVISORIES ARE IN EFFECT BEGINNING THIS
AFTERNOON THROUGH FRIDAY NIGHT FOR THE OUTER WATERS AS NORTHERLY
WINDS ALLOW STEEP SHORT PERIOD SEAS TO BUILD. THE STRONGEST WINDS
AND HIGHEST SEAS SHOULD REMAIN OUTSIDE OF THE INNER WATERS SO AT
THIS TIME HAVE OPTED TO CONTINUE NO HEADLINES FOR THE INNER ZONES.
HOWEVER NORTHERLY WINDS MAY ALLOW STEEP SHORT PERIOD SEAS TO BUILD
INTO THE SOUTHERN HALF OF THE SOUTHERN INNER WATERS FRIDAY INTO
FRIDAY NIGHT. A BRIEF DECREASE IN NORTHERLY WINDS MAY OCCUR ON
SATURDAY ACROSS THE NORTHERN WATERS BEFORE THE PRESSURE GRADIENT
TIGHTENS AGAIN LATE IN THE WEEKEND INTO NEXT WEEK WITH HIGH
PRESSURE STRENGTHENING OVER THE EASTERN PACIFIC. NEAR GALE
CONDITIONS MAY DEVELOP OVER THE OUTER WATERS EARLY NEXT WEEK.

SOUTHERLY SWELL CONTINUES TO MOVE THROUGH THE WATERS ORIGINATING
FROM NOW DOWNGRADED TROPICAL STORM MARIE. THIS SWELL WILL SUBSIDE
TONIGHT INTO FRIDAY DECREASING THE SHOALING THREAT. RPA

&&

.EKA WATCHES/WARNINGS/ADVISORIES...

CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...

SMALL CRAFT ADVISORY FROM PZZ470-475.

&&

$$

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

FOLLOW US ON FACEBOOK AND TWITTER AT:
HTTP://WWW.FACEBOOK.COM/NWSEUREKA
HTTP://WWW.TWITTER.COM/NWSEUREKA





000
FXUS66 KEKA 281047
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
347 AM PDT THU AUG 28 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
TODAY...RESULTING IN DRY CONDITIONS AND SLIGHTLY ABOVE NORMAL
TEMPERATURES ACROSS THE INTERIOR. TEMPERATURES WILL TREND DOWNWARD
ON FRIDAY AS THE RIDGE MOVES EAST AND IS REPLACED BY AN UPPER
LEVEL TROUGH. DRY CONDITIONS WILL PERSIST THROUGH THE MIDDLE OF
NEXT WEEK.

&&

.DISCUSSION...1030Z SATELLITE IMAGERY SHOWS STRATUS/FOG ALONG THE
NORTHWEST CALIFORNIA COAST. THE MARINE LAYER DEPTH WILL NOT CHANGE
MUCH TODAY AS THE PRESSURE GRADIENTS AND THERMAL PROFILES REMAIN
ABOUT THE SAME AS YESTERDAY. THEREFORE, EXPECT THE STRATUS/FOG TO
BURN BACK TO THE IMMEDIATE COASTLINE TODAY. HIGHS TODAY SHOULD BE
VERY SIMILAR TO YESTERDAY AS A WARM AIR MASS REMAINS OVER THE
REGION. THE RIDGE ALOFT WILL SHIFT EAST ON FRI AS AN UPPER TROUGH
DIGS OVER THE PAC NW. TEMPERATURES WILL DROP TO NEAR NORMAL FRI
WITH STRONGER WESTERLY FLOW ALOFT. STRATUS/FOG AS WELL AS SMALL
SCALE EDDIES WILL CONTINUE TO BE PROBLEMATIC TO FORECAST THROUGH
THIS TIME PERIOD, SO WILL MAINTAIN A PERSISTENCE FORECAST OF NIGHT
AND MORNING STRATUS/FOG PULLING BACK TO THE IMMEDIATE COASTLINE
EACH AFTERNOON. THE MARINE LAYER MIGHT DEEPEN ON FRI AND SAT AS
THE TROUGH DIGS INTO THE PAC NW. MODELS REMAIN CONSISTENT WITH
RIDGING ALOFT DEVELOPING OFFSHORE ON SUNDAY AND MONDAY, THEN
ANOTHER WEAK UPPER TROUGH APPROACHING THE COAST BY THE MIDDLE OF
NEXT WEEK. THE FORECAST REMAINS LARGELY BASED ON PERSISTENCE AND
CLIMATOLOGY WITH NO STRONG INDICATIONS FROM THE MODELS TO FORECAST
ANY MAJOR CHANGES.

&&

.AVIATION...AN UPPER LEVEL RIDGE OVER THE WEST COAST WILL BE
FLATTENED SLIGHTLY BY A PASSING SHORTWAVE TROUGH MOVING INTO THE
PACIFIC NORTHWEST TODAY. HOWEVER WITH THE RIDGE STILL IN PLACE
SUBSIDENCE SHOULD ALLOW THE MARINE INVERSION TO REMAIN STRONG.
ANOTHER DAY OF LIFR CONDITIONS AT THE COAST CAN BE EXPECTED WITH
SOME BRIEF CLEARING POSSIBLE AT THE NEAR COASTAL TERMINALS AS THE
STRATUS/FOG PULLS BACK TO THE COAST THIS AFTERNOON. THE STRATUS
WILL PUSH BACK ONSHORE THIS EVENING.

VFR WILL PREVAIL ACROSS THE INTERIOR WITH HIGH PRESSURE IN PLACE.
SOUTHWESTERLY FLOW ALOFT SHOULD ALLOW MOST OF THE SMOKE FROM
WILDFIRES IN SISKIYOU COUNTY TO DRIFT AWAY FROM THE AREA TODAY AND
TONIGHT. RPA

&&

.MARINE...A STRENGTHENING THERMAL TROUGH ACROSS THE INTERIOR
TODAY WILL ALLOW NORTHERLY WINDS TO INCREASE OVER THE COASTAL
WATERS. SMALL CRAFT ADVISORIES ARE IN EFFECT BEGINNING THIS
AFTERNOON THROUGH FRIDAY NIGHT FOR THE OUTER WATERS AS NORTHERLY
WINDS ALLOW STEEP SHORT PERIOD SEAS TO BUILD. THE STRONGEST WINDS
AND HIGHEST SEAS SHOULD REMAIN OUTSIDE OF THE INNER WATERS SO AT
THIS TIME HAVE OPTED TO CONTINUE NO HEADLINES FOR THE INNER ZONES.
HOWEVER NORTHERLY WINDS MAY ALLOW STEEP SHORT PERIOD SEAS TO BUILD
INTO THE SOUTHERN HALF OF THE SOUTHERN INNER WATERS FRIDAY INTO
FRIDAY NIGHT. A BRIEF DECREASE IN NORTHERLY WINDS MAY OCCUR ON
SATURDAY ACROSS THE NORTHERN WATERS BEFORE THE PRESSURE GRADIENT
TIGHTENS AGAIN LATE IN THE WEEKEND INTO NEXT WEEK WITH HIGH
PRESSURE STRENGTHENING OVER THE EASTERN PACIFIC. NEAR GALE
CONDITIONS MAY DEVELOP OVER THE OUTER WATERS EARLY NEXT WEEK.

SOUTHERLY SWELL CONTINUES TO MOVE THROUGH THE WATERS ORIGINATING
FROM NOW DOWNGRADED TROPICAL STORM MARIE. THIS SWELL WILL SUBSIDE
TONIGHT INTO FRIDAY DECREASING THE SHOALING THREAT. RPA

&&

.EKA WATCHES/WARNINGS/ADVISORIES...

CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...

SMALL CRAFT ADVISORY FROM PZZ470-475.

&&

$$

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

FOLLOW US ON FACEBOOK AND TWITTER AT:
HTTP://WWW.FACEBOOK.COM/NWSEUREKA
HTTP://WWW.TWITTER.COM/NWSEUREKA






000
FXUS66 KEKA 272212 CCA
AFDEKA

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE EUREKA CA
309 PM PDT WED AUG 27 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
THROUGH THURSDAY...RESULTING IN DRY CONDITIONS AS WELL AS SLIGHTLY
ABOVE NORMAL TEMPERATURES ACROSS THE INTERIOR. TEMPERATURES WILL
TREND DOWNWARD ON FRIDAY AS THE RIDGE MOVES EAST AND IS REPLACED
BY AN UPPER LEVEL TROUGH. DRY CONDITIONS WILL PERSIST THROUGH MID
NEXT WEEK.

&&

.DISCUSSION...SHALLOW LAYER OF STRATUS AND PATCHY FOG HUGGED THE
IMMEDIATE COAST THROUGH MOST OF TODAY. MARINE LAYER DEPTH WILL
NOT CHANGE MUCH TONIGHT INTO THU AS PRESSURE GRADIENTS AND THERMAL
PROFILES REMAIN ABOUT THE SAME. THUS EXPECT STRATUS AND FOG TO
EXTEND SLIGHTLY INTO THE ADJACENT RIVER VALLEYS THROUGH
TONIGHT...THEN PEEL BACK TO THE COASTLINE AGAIN ON THU. 2PM
TEMPERATURES WERE HIGHER MOST EVERYWHERE TODAY EXCEPT ALONG THE
IMMEDIATE COAST. HIGHS ON THU SHOULD BE VERY SIMILAR TO TODAY`S AS
A WARM AIR MASS HOLDS OVER THE REGION. THE RIDGE ALOFT WILL SHIFT
EAST ON FRI AS AN UPPER TROUGH DIGS OVER THE PAC NW. TEMPERATURES
WILL DROP TO NEAR NORMAL FRI WITH STRONGER WESTERLY FLOW ALOFT
EXPECTED. LOW CLOUDS AND FOG AS WELL AS SMALL SCALE EDDIES WILL
CONTINUE TO BE PROBLEMATIC TO FORECAST THROUGH THE PERIOD. FOR NOW
WILL MAINTAIN A PERSISTENCE FORECAST OF NIGHT AND MORNING LOW
CLOUDS AND FOG PULLING BACK TO THE COASTLINE EACH AFTERNOON. THE
LAYER MIGHT DEEPEN ON FRI AND SAT AS THE TROUGH DIGS INTO THE PAC NW.

MODELS REMAIN CONSISTENT WITH RIDGING ALOFT DEVELOPING OFFSHORE ON
SUNDAY AND MONDAY THEN ANOTHER WEAK UPPER TROUGH APPROACHING THE
COAST BY MID WEEK. FOR THE MOST PART THE FORECAST HAS BEEN BASED
LARGELY ON PERSISTENCE AND CLIMATOLOGY WITH NO STRONG INDICATIONS
FROM THE MODELS TO FORECAST ANY MAJOR CHANGES.

&&

.AVIATION...COASTAL CLOUD COVERAGE REMAINED EXTENSIVE TODAY WITH SOME
SPOTS OF VERY THIN CLOUD COVER. EDDIES HELPED FEW PARTS OF THE COAST
TO CLEAR MOMENTARILY DURING THE AFTERNOON TODAY. STRATUS IS EXPECTED
TO RETURN TO MUCH OF THE COAST WITH MODELS SHOWING HIGH BOUNDARY
LAYER RELATIVE HUMIDITY VALUES RETURNING OVERNIGHT. EXPECT A RETURN
OF IFR TO LIFR CONDITIONS ALONG MUCH OF COASTAL CALIFORNIA TONIGHT.
OTHERWISE INTERIOR AREAS SHOULD REMAIN MOSTLY CLEAR EXCEPT FOR SMOKE
GENERATED BY FIRES IN SISKIYOU, TRINITY, AND N. MENDOCINO COUNTIES.
KML

&&

.MARINE...SOUTHERLY SWELL ORIGINATING FROM HURRICANE MARIE OFF THE
COAST OF MEXICO IS CONTINUING TO BUILD INTO THE WATERS. BUOY DATA
OFF OF CENTRAL AND SOUTHERN CALIFORNIA INDICATES THE SWELL MAY BE A
FEW FEET SMALLER THAN PREDICTED BY SWAN...SO LITTLE CHANGES WERE
MADE TO THE EXISTING FORECAST. THIS WILL RESULT IN WAVES OF 2 TO 5
FEET AT 15 TO 18 SECONDS THROUGH THURSDAY. WHEN THESE WAVES REACH
THE COAST THEY WILL RESULT IN INCREASED CURRENTS AND OCCASIONAL
LARGE WAVE SETS...ESPECIALLY ON SOUTH FACING BEACHES. A MARINE
WEATHER STATEMENT WAS ISSUED TO HIGHLIGHT THE POTENTIAL THREATS TO
MARINERS INCLUDING: STRONGER CURRENTS, INCREASED SHOALING HAZARDS
THROUGH WAVE SET BEHAVIOR, AND THE IMPACT OF SOUTH AND SOUTHWEST
FACING ANCHORAGES AND COVES THAT ARE TYPICALLY SHELTERED FROM
NORTHWEST WAVES. IN ADDITION, THE SWELL POSES A THREAT TO
INDIVIDUALS THAT RECREATE IN OR NEAR THE OCEAN INCLUDING: SURFERS,
ABALONE DIVERS, AND BEACH GOERS.

GRADUALLY BUILDING HIGH PRESSURE WILL STRENGTHEN THE PRESSURE
GRADIENT AND CAUSE LIGHT NORTHERLY WINDS TO INCREASE THROUGH THE
WEEKEND. A SMALL CRAFT ADVISORY WAS ISSUED FOR THE OUTER COASTAL
WATERS STARTING THURSDAY AFTERNOON AS WAVES STEEPEN AND WILL END
LATE FRIDAY. THERE LOOKS TO BE A BRIEF WINDOW OF EASING CONDITIONS
ON SATURDAY (SPECIFICALLY FOR THE NORTHERN WATERS), HOWEVER, SEAS
ARE FORECAST TO BE MARGINAL AND ADVISORIES MAY NEED TO BE EXTENDED
INTO THE WEEKEND. MARINE CONDITIONS WILL BUILD MORE SUBSTANTIALLY BY
EARLY NEXT WEEK AS THE PACIFIC RIDGE INTERACTS WITH THE CALIFORNIA
THERMAL TROUGH CAUSING WINDS TO INCREASE TO NEAR GALE CONDITIONS.
RPA/KML

&&

.EKA WATCHES/WARNINGS/ADVISORIES...CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...SMALL CRAFT ADVISORY
FROM 3 PM THURSDAY TO 9 AM PDT SUNDAY PZZ470-475.

&&

$$

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HTTP://WWW.FACEBOOK.COM/NWSEUREKA
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000
FXUS66 KEKA 272212 CCA
AFDEKA

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE EUREKA CA
309 PM PDT WED AUG 27 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
THROUGH THURSDAY...RESULTING IN DRY CONDITIONS AS WELL AS SLIGHTLY
ABOVE NORMAL TEMPERATURES ACROSS THE INTERIOR. TEMPERATURES WILL
TREND DOWNWARD ON FRIDAY AS THE RIDGE MOVES EAST AND IS REPLACED
BY AN UPPER LEVEL TROUGH. DRY CONDITIONS WILL PERSIST THROUGH MID
NEXT WEEK.

&&

.DISCUSSION...SHALLOW LAYER OF STRATUS AND PATCHY FOG HUGGED THE
IMMEDIATE COAST THROUGH MOST OF TODAY. MARINE LAYER DEPTH WILL
NOT CHANGE MUCH TONIGHT INTO THU AS PRESSURE GRADIENTS AND THERMAL
PROFILES REMAIN ABOUT THE SAME. THUS EXPECT STRATUS AND FOG TO
EXTEND SLIGHTLY INTO THE ADJACENT RIVER VALLEYS THROUGH
TONIGHT...THEN PEEL BACK TO THE COASTLINE AGAIN ON THU. 2PM
TEMPERATURES WERE HIGHER MOST EVERYWHERE TODAY EXCEPT ALONG THE
IMMEDIATE COAST. HIGHS ON THU SHOULD BE VERY SIMILAR TO TODAY`S AS
A WARM AIR MASS HOLDS OVER THE REGION. THE RIDGE ALOFT WILL SHIFT
EAST ON FRI AS AN UPPER TROUGH DIGS OVER THE PAC NW. TEMPERATURES
WILL DROP TO NEAR NORMAL FRI WITH STRONGER WESTERLY FLOW ALOFT
EXPECTED. LOW CLOUDS AND FOG AS WELL AS SMALL SCALE EDDIES WILL
CONTINUE TO BE PROBLEMATIC TO FORECAST THROUGH THE PERIOD. FOR NOW
WILL MAINTAIN A PERSISTENCE FORECAST OF NIGHT AND MORNING LOW
CLOUDS AND FOG PULLING BACK TO THE COASTLINE EACH AFTERNOON. THE
LAYER MIGHT DEEPEN ON FRI AND SAT AS THE TROUGH DIGS INTO THE PAC NW.

MODELS REMAIN CONSISTENT WITH RIDGING ALOFT DEVELOPING OFFSHORE ON
SUNDAY AND MONDAY THEN ANOTHER WEAK UPPER TROUGH APPROACHING THE
COAST BY MID WEEK. FOR THE MOST PART THE FORECAST HAS BEEN BASED
LARGELY ON PERSISTENCE AND CLIMATOLOGY WITH NO STRONG INDICATIONS
FROM THE MODELS TO FORECAST ANY MAJOR CHANGES.

&&

.AVIATION...COASTAL CLOUD COVERAGE REMAINED EXTENSIVE TODAY WITH SOME
SPOTS OF VERY THIN CLOUD COVER. EDDIES HELPED FEW PARTS OF THE COAST
TO CLEAR MOMENTARILY DURING THE AFTERNOON TODAY. STRATUS IS EXPECTED
TO RETURN TO MUCH OF THE COAST WITH MODELS SHOWING HIGH BOUNDARY
LAYER RELATIVE HUMIDITY VALUES RETURNING OVERNIGHT. EXPECT A RETURN
OF IFR TO LIFR CONDITIONS ALONG MUCH OF COASTAL CALIFORNIA TONIGHT.
OTHERWISE INTERIOR AREAS SHOULD REMAIN MOSTLY CLEAR EXCEPT FOR SMOKE
GENERATED BY FIRES IN SISKIYOU, TRINITY, AND N. MENDOCINO COUNTIES.
KML

&&

.MARINE...SOUTHERLY SWELL ORIGINATING FROM HURRICANE MARIE OFF THE
COAST OF MEXICO IS CONTINUING TO BUILD INTO THE WATERS. BUOY DATA
OFF OF CENTRAL AND SOUTHERN CALIFORNIA INDICATES THE SWELL MAY BE A
FEW FEET SMALLER THAN PREDICTED BY SWAN...SO LITTLE CHANGES WERE
MADE TO THE EXISTING FORECAST. THIS WILL RESULT IN WAVES OF 2 TO 5
FEET AT 15 TO 18 SECONDS THROUGH THURSDAY. WHEN THESE WAVES REACH
THE COAST THEY WILL RESULT IN INCREASED CURRENTS AND OCCASIONAL
LARGE WAVE SETS...ESPECIALLY ON SOUTH FACING BEACHES. A MARINE
WEATHER STATEMENT WAS ISSUED TO HIGHLIGHT THE POTENTIAL THREATS TO
MARINERS INCLUDING: STRONGER CURRENTS, INCREASED SHOALING HAZARDS
THROUGH WAVE SET BEHAVIOR, AND THE IMPACT OF SOUTH AND SOUTHWEST
FACING ANCHORAGES AND COVES THAT ARE TYPICALLY SHELTERED FROM
NORTHWEST WAVES. IN ADDITION, THE SWELL POSES A THREAT TO
INDIVIDUALS THAT RECREATE IN OR NEAR THE OCEAN INCLUDING: SURFERS,
ABALONE DIVERS, AND BEACH GOERS.

GRADUALLY BUILDING HIGH PRESSURE WILL STRENGTHEN THE PRESSURE
GRADIENT AND CAUSE LIGHT NORTHERLY WINDS TO INCREASE THROUGH THE
WEEKEND. A SMALL CRAFT ADVISORY WAS ISSUED FOR THE OUTER COASTAL
WATERS STARTING THURSDAY AFTERNOON AS WAVES STEEPEN AND WILL END
LATE FRIDAY. THERE LOOKS TO BE A BRIEF WINDOW OF EASING CONDITIONS
ON SATURDAY (SPECIFICALLY FOR THE NORTHERN WATERS), HOWEVER, SEAS
ARE FORECAST TO BE MARGINAL AND ADVISORIES MAY NEED TO BE EXTENDED
INTO THE WEEKEND. MARINE CONDITIONS WILL BUILD MORE SUBSTANTIALLY BY
EARLY NEXT WEEK AS THE PACIFIC RIDGE INTERACTS WITH THE CALIFORNIA
THERMAL TROUGH CAUSING WINDS TO INCREASE TO NEAR GALE CONDITIONS.
RPA/KML

&&

.EKA WATCHES/WARNINGS/ADVISORIES...CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...SMALL CRAFT ADVISORY
FROM 3 PM THURSDAY TO 9 AM PDT SUNDAY PZZ470-475.

&&

$$

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

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HTTP://WWW.FACEBOOK.COM/NWSEUREKA
HTTP://WWW.TWITTER.COM/NWSEUREKA










000
FXUS66 KEKA 272204
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
304 PM PDT WED AUG 27 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
THROUGH THURSDAY...RESULTING DRY CONDITIONS AS WELL AS SLIGHTLY
ABOVE NORMAL TEMPERATURES ACROSS THE INTERIOR.  TEMPERATURES WILL
TREND DOWNWARD ON FRIDAY AS THE RIDGE MOVES EAST AND IS REPLACED
BY AN UPPER LEVEL TROUGH. DRY CONDITIONS WILL PERSIST THROUGH MID
NEXT WEEK.

&&

.DISCUSSION...SHALLOW LAYER OF STRATUS AND PATCHY FOG HUGGED THE
IMMEDIATE COAST THROUGH MOST OF TODAY. MARINE LAYER DEPTH WILL
NOT CHANCE MUCH TONIGHT INTO THU AS PRESSURE GRADIENTS AND THERMAL
PROFILES REMAIN ABOUT THE SAME. THUS EXPECT STRATUS AND FOG TO EXTEND
SLIGHTLY INTO THE ADJACENT RIVER VALLEYS THROUGH TONIGHT...THEN PEEL
BACK TO THE COASTLINE AGAIN ON THU. 2PM TEMPERATURES WERE HIGHER
MOST EVERYWHERE TODAY EXCEPT ALONG THE IMMEDIATE COAST. HIGHS ON
THU SHOULD BE VERY SIMILAR TO TODAY`S AS A WARM AIR MASS HOLDS
OVER THE REGION. THE RIDGE ALOFT WILL SHIFT EAST ON FRI AS AN
UPPER TROUGH DIGS OVER THE PAC NW. TEMPERATURES WILL DROP TO NEAR
NORMAL FRI WITH STRONGER WESTERLY FLOW ALOFT EXPECTED.
LOW CLOUDS AND FOG AS WELL AS SMALL SCALE EDDIES WILL CONTINUE TO
BE PROBLEMATIC TO FORECAST THROUGH THE PERIOD. FOR NOW WILL
MAINTAIN A PERSISTENCE FORECAST OF NIGHT AND MORNING LOW CLOUDS
AND FOG PULLING BACK TO THE COASTLINE EACH AFTERNOON. THE LAYER
MIGHT DEEPEN ON FRI AND SAT AS THE TROUGH DIGS INTO THE PAC NW.

MODELS REMAIN CONSISTENT ON RIDGING ALOFT DEVELOPING OFFSHORE ON
SUNDAY AND MONDAY THEN ANOTHER WEAK UPPER TROUGH APPROACHING THE
COAST BY MID WEEK. FOR THE MOST PART THE FORECAST HAS BEEN BASED
LARGELY ON PERSISTENCE AND CLIMATOLOGY WITH NO STRONG INDICATIONS
FROM THE MODELS TO FORECAST ANY MAJOR CHANGES.

&&

.AVIATION...COASTAL CLOUD COVERAGE REMAINED EXTENSIVE TODAY WITH SOME
SPOTS OF VERY THIN CLOUD COVER. EDDIES HELPED FEW PARTS OF THE COAST
TO CLEAR MOMENTARILY DURING THE AFTERNOON TODAY. STRATUS IS EXPECTED
TO RETURN TO MUCH OF THE COAST WITH MODELS SHOWING HIGH BOUNDARY
LAYER RELATIVE HUMIDITY VALUES RETURNING OVERNIGHT. EXPECT A RETURN
OF IFR TO LIFR CONDITIONS ALONG MUCH OF COASTAL CALIFORNIA TONIGHT.
OTHERWISE INTERIOR AREAS SHOULD REMAIN MOSTLY CLEAR EXCEPT FOR SMOKE
GENERATED BY FIRES IN SISKIYOU, TRINITY, AND N. MENDOCINO COUNTIES.
KML

&&

.MARINE...SOUTHERLY SWELL ORIGINATING FROM HURRICANE MARIE OFF THE
COAST OF MEXICO IS CONTINUING TO BUILD INTO THE WATERS. BUOY DATA
OFF OF CENTRAL AND SOUTHERN CALIFORNIA INDICATES THE SWELL MAY BE A
FEW FEET SMALLER THAN PREDICTED BY SWAN...SO LITTLE CHANGES WERE
MADE TO THE EXISTING FORECAST. THIS WILL RESULT IN WAVES OF 2 TO 5
FEET AT 15 TO 18 SECONDS THROUGH THURSDAY. WHEN THESE WAVES REACH
THE COAST THEY WILL RESULT IN INCREASED CURRENTS AND OCCASIONAL
LARGE WAVE SETS...ESPECIALLY ON SOUTH FACING BEACHES. A MARINE
WEATHER STATEMENT WAS ISSUED TO HIGHLIGHT THE POTENTIAL THREATS TO
MARINERS INCLUDING: STRONGER CURRENTS, INCREASED SHOALING HAZARDS
THROUGH WAVE SET BEHAVIOR, AND THE IMPACT OF SOUTH AND SOUTHWEST
FACING ANCHORAGES AND COVES THAT ARE TYPICALLY SHELTERED FROM
NORTHWEST WAVES. IN ADDITION, THE SWELL POSES A THREAT TO
INDIVIDUALS THAT RECREATE IN OR NEAR THE OCEAN INCLUDING: SURFERS,
ABALONE DIVERS, AND BEACH GOERS.

GRADUALLY BUILDING HIGH PRESSURE WILL STRENGTHEN THE PRESSURE
GRADIENT AND CAUSE LIGHT NORTHERLY WINDS TO INCREASE THROUGH THE
WEEKEND. A SMALL CRAFT ADVISORY WAS ISSUED FOR THE OUTER COASTAL
WATERS STARTING THURSDAY AFTERNOON AS WAVES STEEPEN AND WILL END
LATE FRIDAY. THERE LOOKS TO BE A BRIEF WINDOW OF EASING CONDITIONS
ON SATURDAY (SPECIFICALLY FOR THE NORTHERN WATERS), HOWEVER, SEAS
ARE FORECAST TO BE MARGINAL AND ADVISORIES MAY NEED TO BE EXTENDED
INTO THE WEEKEND. MARINE CONDITIONS WILL BUILD MORE SUBSTANTIALLY BY
EARLY NEXT WEEK AS THE PACIFIC RIDGE INTERACTS WITH THE CALIFORNIA
THERMAL TROUGH CAUSING WINDS TO INCREASE TO NEAR GALE CONDITIONS.
RPA/KML

&&

.EKA WATCHES/WARNINGS/ADVISORIES...CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...SMALL CRAFT ADVISORY
FROM 3 PM THURSDAY TO 9 AM PDT SUNDAY PZZ470-475.

&&

$$

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

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HTTP://WWW.FACEBOOK.COM/NWSEUREKA
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000
FXUS66 KEKA 272204
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
304 PM PDT WED AUG 27 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
THROUGH THURSDAY...RESULTING DRY CONDITIONS AS WELL AS SLIGHTLY
ABOVE NORMAL TEMPERATURES ACROSS THE INTERIOR.  TEMPERATURES WILL
TREND DOWNWARD ON FRIDAY AS THE RIDGE MOVES EAST AND IS REPLACED
BY AN UPPER LEVEL TROUGH. DRY CONDITIONS WILL PERSIST THROUGH MID
NEXT WEEK.

&&

.DISCUSSION...SHALLOW LAYER OF STRATUS AND PATCHY FOG HUGGED THE
IMMEDIATE COAST THROUGH MOST OF TODAY. MARINE LAYER DEPTH WILL
NOT CHANCE MUCH TONIGHT INTO THU AS PRESSURE GRADIENTS AND THERMAL
PROFILES REMAIN ABOUT THE SAME. THUS EXPECT STRATUS AND FOG TO EXTEND
SLIGHTLY INTO THE ADJACENT RIVER VALLEYS THROUGH TONIGHT...THEN PEEL
BACK TO THE COASTLINE AGAIN ON THU. 2PM TEMPERATURES WERE HIGHER
MOST EVERYWHERE TODAY EXCEPT ALONG THE IMMEDIATE COAST. HIGHS ON
THU SHOULD BE VERY SIMILAR TO TODAY`S AS A WARM AIR MASS HOLDS
OVER THE REGION. THE RIDGE ALOFT WILL SHIFT EAST ON FRI AS AN
UPPER TROUGH DIGS OVER THE PAC NW. TEMPERATURES WILL DROP TO NEAR
NORMAL FRI WITH STRONGER WESTERLY FLOW ALOFT EXPECTED.
LOW CLOUDS AND FOG AS WELL AS SMALL SCALE EDDIES WILL CONTINUE TO
BE PROBLEMATIC TO FORECAST THROUGH THE PERIOD. FOR NOW WILL
MAINTAIN A PERSISTENCE FORECAST OF NIGHT AND MORNING LOW CLOUDS
AND FOG PULLING BACK TO THE COASTLINE EACH AFTERNOON. THE LAYER
MIGHT DEEPEN ON FRI AND SAT AS THE TROUGH DIGS INTO THE PAC NW.

MODELS REMAIN CONSISTENT ON RIDGING ALOFT DEVELOPING OFFSHORE ON
SUNDAY AND MONDAY THEN ANOTHER WEAK UPPER TROUGH APPROACHING THE
COAST BY MID WEEK. FOR THE MOST PART THE FORECAST HAS BEEN BASED
LARGELY ON PERSISTENCE AND CLIMATOLOGY WITH NO STRONG INDICATIONS
FROM THE MODELS TO FORECAST ANY MAJOR CHANGES.

&&

.AVIATION...COASTAL CLOUD COVERAGE REMAINED EXTENSIVE TODAY WITH SOME
SPOTS OF VERY THIN CLOUD COVER. EDDIES HELPED FEW PARTS OF THE COAST
TO CLEAR MOMENTARILY DURING THE AFTERNOON TODAY. STRATUS IS EXPECTED
TO RETURN TO MUCH OF THE COAST WITH MODELS SHOWING HIGH BOUNDARY
LAYER RELATIVE HUMIDITY VALUES RETURNING OVERNIGHT. EXPECT A RETURN
OF IFR TO LIFR CONDITIONS ALONG MUCH OF COASTAL CALIFORNIA TONIGHT.
OTHERWISE INTERIOR AREAS SHOULD REMAIN MOSTLY CLEAR EXCEPT FOR SMOKE
GENERATED BY FIRES IN SISKIYOU, TRINITY, AND N. MENDOCINO COUNTIES.
KML

&&

.MARINE...SOUTHERLY SWELL ORIGINATING FROM HURRICANE MARIE OFF THE
COAST OF MEXICO IS CONTINUING TO BUILD INTO THE WATERS. BUOY DATA
OFF OF CENTRAL AND SOUTHERN CALIFORNIA INDICATES THE SWELL MAY BE A
FEW FEET SMALLER THAN PREDICTED BY SWAN...SO LITTLE CHANGES WERE
MADE TO THE EXISTING FORECAST. THIS WILL RESULT IN WAVES OF 2 TO 5
FEET AT 15 TO 18 SECONDS THROUGH THURSDAY. WHEN THESE WAVES REACH
THE COAST THEY WILL RESULT IN INCREASED CURRENTS AND OCCASIONAL
LARGE WAVE SETS...ESPECIALLY ON SOUTH FACING BEACHES. A MARINE
WEATHER STATEMENT WAS ISSUED TO HIGHLIGHT THE POTENTIAL THREATS TO
MARINERS INCLUDING: STRONGER CURRENTS, INCREASED SHOALING HAZARDS
THROUGH WAVE SET BEHAVIOR, AND THE IMPACT OF SOUTH AND SOUTHWEST
FACING ANCHORAGES AND COVES THAT ARE TYPICALLY SHELTERED FROM
NORTHWEST WAVES. IN ADDITION, THE SWELL POSES A THREAT TO
INDIVIDUALS THAT RECREATE IN OR NEAR THE OCEAN INCLUDING: SURFERS,
ABALONE DIVERS, AND BEACH GOERS.

GRADUALLY BUILDING HIGH PRESSURE WILL STRENGTHEN THE PRESSURE
GRADIENT AND CAUSE LIGHT NORTHERLY WINDS TO INCREASE THROUGH THE
WEEKEND. A SMALL CRAFT ADVISORY WAS ISSUED FOR THE OUTER COASTAL
WATERS STARTING THURSDAY AFTERNOON AS WAVES STEEPEN AND WILL END
LATE FRIDAY. THERE LOOKS TO BE A BRIEF WINDOW OF EASING CONDITIONS
ON SATURDAY (SPECIFICALLY FOR THE NORTHERN WATERS), HOWEVER, SEAS
ARE FORECAST TO BE MARGINAL AND ADVISORIES MAY NEED TO BE EXTENDED
INTO THE WEEKEND. MARINE CONDITIONS WILL BUILD MORE SUBSTANTIALLY BY
EARLY NEXT WEEK AS THE PACIFIC RIDGE INTERACTS WITH THE CALIFORNIA
THERMAL TROUGH CAUSING WINDS TO INCREASE TO NEAR GALE CONDITIONS.
RPA/KML

&&

.EKA WATCHES/WARNINGS/ADVISORIES...CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...SMALL CRAFT ADVISORY
FROM 3 PM THURSDAY TO 9 AM PDT SUNDAY PZZ470-475.

&&

$$

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

FOLLOW US ON FACEBOOK AND TWITTER AT:
HTTP://WWW.FACEBOOK.COM/NWSEUREKA
HTTP://WWW.TWITTER.COM/NWSEUREKA








000
FXUS66 KEKA 271113
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
413 AM PDT WED AUG 27 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
THROUGH THURSDAY...RESULTING IN SLIGHTLY ABOVE NORMAL TEMPERATURES
ACROSS THE INTERIOR AND DRY CONDITIONS. TEMPERATURES WILL BEGIN
TRENDING DOWNWARD ON FRIDAY AS THE RIDGE MOVES INLAND AND IS
REPLACED BY AN UPPER LEVEL TROUGH.

&&

.DISCUSSION...A GENERALLY QUIET WX PATTERN CONTINUES. AN UPPER
RIDGE WILL REMAIN OVER THE W COAST INTO WED, THEN WEAKEN AS AN
UPPER TROF DIGS OVER THE GULF OF AK AND OFF THE PAC NW COAST LATE
THIS WEEK. TEMPERATURES WILL BE WARM THRU THU OVER THE INTERIOR,
THEN DROP BACK TO NEAR NORMAL FOR THE WEEKEND. LOW CLOUDS WILL
CONTINUE OVER THE COASTAL WATERS AND IMMEDIATE COAST THIS WEEK,
WITH CLOUDS PULLING BACK TO THE COAST DURING EACH AFTERNOON.
MODELS REMAIN CONSISTENT HAVING THE REMNANTS OF HURRICANE MARIE
STAYING S OF THE APPROACHING UPPER TROF. WITH LIMITED TO NO
MOISTURE BEING ENTRAINED INTO THE TROF, DROPPED POPS FOR THIS
WEEKEND. OTHERWISE, LOADED MOST OF THE GRIDS WITH THE CONSMODEL.

&&

.AVIATION...UPPER LEVEL RIDGING WILL CONTINUE TO BUILD OVER THE
WEST COAST RESULTING IN A COMPACT MARINE LAYER AND THICK FOG ALONG
THE IMMEDIATE COASTLINE. WITH THE MARINE LAYER INVERSION EXPECTED
TO REMAIN STRONG TODAY...COASTAL CLOUDS WILL LIKELY REMAIN IN
PLACE WITH LIFR CONDITIONS EXPECTED THOUGH SOME BRIEF CLEARING MAY
BE POSSIBLE AT THE TERMINALS AS THE CLOUDS PULL BACK TOWARD THE
COAST THIS AFTERNOON.

VFR WILL PREVAIL ACROSS MUCH OF THE INTERIOR. SOME AREAS WILL SEE
VISIBILITY RESTRICTIONS DUE TO WILDFIRE SMOKE IN NORTHERN
HUMBOLDT...NORTHERN TRINITY AND DEL NORTE COUNTIES. RPA

&&

.MARINE...A RIDGE OF HIGH PRESSURE OVER THE WEST COAST WILL ALLOW
THE PRESSURE GRADIENT TO REMAIN WEAK. A MODERATELY STRONG THERMAL
TROUGH WILL KEEP SOME LIGHT TO MODERATE NORTHERLIES IN THE WATERS
WITH SOME SMALL SHORT PERIOD WAVES THROUGH THE END OF THE WEEK.
THE RIDGE WILL SLIDE OFF THE WEST COAST THIS WEEKEND INTO EARLY
NEXT WEEK ALLOWING A TROUGH TO MOVE INTO THE INTERIOR WESTERN
UNITED STATES. THIS WILL TIGHTEN THE PRESSURE GRADIENT OVER THE
WATERS WITH NORTHERLY WINDS INCREASING BACK INTO SMALL CRAFT AND
POSSIBLY TO NEAR GALE.

SOUTHERLY SWELL ORIGINATING FROM HURRICANE MARIE OFF THE COAST OF
MEXICO IS CONTINUING TO BUILD INTO THE WATERS. BUOY DATA OFF
CENTRAL AND SOUTHERN CALIFORNIA INDICATES THE SWELL MAY BE A FEW
FEET SMALLER THAN PREDICTED BY SWAN...SO ONCE AGAIN OPTED TO ONLY
USE 60 PERCENT OF THE MODEL PREDICTED WAVE HEIGHTS. STILL THIS
WILL RESULT IN WAVES OF 2 TO 5 FEET AT 15 TO 18 SECONDS TODAY INTO
THURSDAY. WHEN THESE WAVES REACH THE COAST THEY WILL RESULT IN
INCREASED CURRENTS AND OCCASIONAL LARGE WAVE SETS...ESPECIALLY ON
SOUTH FACING BEACHES. A MARINE WEATHER STATEMENT WAS ISSUED TO
HIGHLIGHT THE POTENTIAL THREATS TO MARINERS INCLUDING: STRONGER
CURRENTS, INCREASED SHOALING HAZARDS THROUGH WAVE SET BEHAVIOR,
AND THE IMPACT OF SOUTH AND SOUTHWEST FACING ANCHORAGES AND COVES
THAT ARE TYPICALLY SHELTERED FROM NORTHWEST WAVES. IN ADDITION,
THE SWELL POSES A THREAT TO INDIVIDUALS THAT RECREATE IN OR NEAR
THE OCEAN INCLUDING: SURFERS, ABALONE DIVERS, AND BEACH GOERS.
RPA/KML

&&

.EKA WATCHES/WARNINGS/ADVISORIES...

CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...NONE.

&&

$$

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

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000
FXUS66 KEKA 271113
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
413 AM PDT WED AUG 27 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
THROUGH THURSDAY...RESULTING IN SLIGHTLY ABOVE NORMAL TEMPERATURES
ACROSS THE INTERIOR AND DRY CONDITIONS. TEMPERATURES WILL BEGIN
TRENDING DOWNWARD ON FRIDAY AS THE RIDGE MOVES INLAND AND IS
REPLACED BY AN UPPER LEVEL TROUGH.

&&

.DISCUSSION...A GENERALLY QUIET WX PATTERN CONTINUES. AN UPPER
RIDGE WILL REMAIN OVER THE W COAST INTO WED, THEN WEAKEN AS AN
UPPER TROF DIGS OVER THE GULF OF AK AND OFF THE PAC NW COAST LATE
THIS WEEK. TEMPERATURES WILL BE WARM THRU THU OVER THE INTERIOR,
THEN DROP BACK TO NEAR NORMAL FOR THE WEEKEND. LOW CLOUDS WILL
CONTINUE OVER THE COASTAL WATERS AND IMMEDIATE COAST THIS WEEK,
WITH CLOUDS PULLING BACK TO THE COAST DURING EACH AFTERNOON.
MODELS REMAIN CONSISTENT HAVING THE REMNANTS OF HURRICANE MARIE
STAYING S OF THE APPROACHING UPPER TROF. WITH LIMITED TO NO
MOISTURE BEING ENTRAINED INTO THE TROF, DROPPED POPS FOR THIS
WEEKEND. OTHERWISE, LOADED MOST OF THE GRIDS WITH THE CONSMODEL.

&&

.AVIATION...UPPER LEVEL RIDGING WILL CONTINUE TO BUILD OVER THE
WEST COAST RESULTING IN A COMPACT MARINE LAYER AND THICK FOG ALONG
THE IMMEDIATE COASTLINE. WITH THE MARINE LAYER INVERSION EXPECTED
TO REMAIN STRONG TODAY...COASTAL CLOUDS WILL LIKELY REMAIN IN
PLACE WITH LIFR CONDITIONS EXPECTED THOUGH SOME BRIEF CLEARING MAY
BE POSSIBLE AT THE TERMINALS AS THE CLOUDS PULL BACK TOWARD THE
COAST THIS AFTERNOON.

VFR WILL PREVAIL ACROSS MUCH OF THE INTERIOR. SOME AREAS WILL SEE
VISIBILITY RESTRICTIONS DUE TO WILDFIRE SMOKE IN NORTHERN
HUMBOLDT...NORTHERN TRINITY AND DEL NORTE COUNTIES. RPA

&&

.MARINE...A RIDGE OF HIGH PRESSURE OVER THE WEST COAST WILL ALLOW
THE PRESSURE GRADIENT TO REMAIN WEAK. A MODERATELY STRONG THERMAL
TROUGH WILL KEEP SOME LIGHT TO MODERATE NORTHERLIES IN THE WATERS
WITH SOME SMALL SHORT PERIOD WAVES THROUGH THE END OF THE WEEK.
THE RIDGE WILL SLIDE OFF THE WEST COAST THIS WEEKEND INTO EARLY
NEXT WEEK ALLOWING A TROUGH TO MOVE INTO THE INTERIOR WESTERN
UNITED STATES. THIS WILL TIGHTEN THE PRESSURE GRADIENT OVER THE
WATERS WITH NORTHERLY WINDS INCREASING BACK INTO SMALL CRAFT AND
POSSIBLY TO NEAR GALE.

SOUTHERLY SWELL ORIGINATING FROM HURRICANE MARIE OFF THE COAST OF
MEXICO IS CONTINUING TO BUILD INTO THE WATERS. BUOY DATA OFF
CENTRAL AND SOUTHERN CALIFORNIA INDICATES THE SWELL MAY BE A FEW
FEET SMALLER THAN PREDICTED BY SWAN...SO ONCE AGAIN OPTED TO ONLY
USE 60 PERCENT OF THE MODEL PREDICTED WAVE HEIGHTS. STILL THIS
WILL RESULT IN WAVES OF 2 TO 5 FEET AT 15 TO 18 SECONDS TODAY INTO
THURSDAY. WHEN THESE WAVES REACH THE COAST THEY WILL RESULT IN
INCREASED CURRENTS AND OCCASIONAL LARGE WAVE SETS...ESPECIALLY ON
SOUTH FACING BEACHES. A MARINE WEATHER STATEMENT WAS ISSUED TO
HIGHLIGHT THE POTENTIAL THREATS TO MARINERS INCLUDING: STRONGER
CURRENTS, INCREASED SHOALING HAZARDS THROUGH WAVE SET BEHAVIOR,
AND THE IMPACT OF SOUTH AND SOUTHWEST FACING ANCHORAGES AND COVES
THAT ARE TYPICALLY SHELTERED FROM NORTHWEST WAVES. IN ADDITION,
THE SWELL POSES A THREAT TO INDIVIDUALS THAT RECREATE IN OR NEAR
THE OCEAN INCLUDING: SURFERS, ABALONE DIVERS, AND BEACH GOERS.
RPA/KML

&&

.EKA WATCHES/WARNINGS/ADVISORIES...

CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...NONE.

&&

$$

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000
FXUS66 KEKA 262244
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
344 PM PDT TUE AUG 26 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
THROUGH THURSDAY...RESULTING IN HIGHER TEMPERATURES AND DRIER
CONDITIONS ACROSS THE INTERIOR. TEMPERATURES WILL TREND DOWNWARD
TOWARD THE END OF THE WEEK AS THE RIDGE MOVES INLAND AND IS
REPLACED BY AN UPPER LEVEL TROUGH.

&&

.DISCUSSION...GENERALLY QUIET WX PATTERN CONTINUES. THE UPPER TROF
E OF THE AREA WILL CONTINUE TO MOVE E AND FILL. AN UPPER RIDGE
WILL BUILD OVER THE W COAST INTO WED...THEN WEAKEN AS AN UPPER
TROF DIGS OVER THE GULF OF AK AND OFF THE PAC NW COAST.
TEMPERATURES WILL BE WARM THRU THU OVER THE INTERIOR....THEN DROP
BACK TO NEAR NORMAL FOR THE WEEKEND.

LOW CLOUDINESS HAS DECREASED TODAY OVER THE S COASTAL WATERS...
LIKELY IN RESPONSE TO SOME ISENTROPIC DESCENT AND CLOUD- LEVEL
DIVERGENCE. CLOUDS ARE EXPECTED TO FILL BACK IN LATER TONIGHT. LOW
CLOUDS WILL CONTINUE OVER THE COASTAL WATERS AND IMMEDIATE COAST
THIS WEEK...WITH CLOUDS PULLING BACK TO THE COAST DURING EACH
AFTERNOON.

MODELS APPEAR TO BE LATCHING ONTO A CONSISTENT SOLUTIONS WITH
RESPECT TO HURRICANE MARIE AND ITS INTERACTION WITH THE DIGGER E
PAC TROF. IT APPEARS MARIE WILL SLIDE TO THE S OF THE TROF WITH
LIMITED MOISTURE BEING ENTRAINED INTO THE TROF. DID NOT MAKE ANY
CHANGES TO PRECIP FORECAST FOR THE WEEKEND. HOWEVER...IF THE TROF
ENTRAINS MORE MOISTURE FROM MARIE OR CONTAINS MORE MOISTURE
ITSELF... POPS MAY NEED TO BE RE-INTRODUCED. IF MORE MOISTURE IS
AVAILABLE... THIS STILL LOOKS LIKE A LOW QPF EVENT. /SEC

&&

.AVIATION...STRATUS REMAINED EXTENSIVE ACROSS COASTAL CALIFORNIA
TODAY WITH CLEARING FROM THE SOUTH. EDDIES HELPED FEW PARTS OF THE
COAST NORTH OF CAPE MENDOCINO TO CLEAR MOMENTARILY THIS AFTERNOON.
STRATUS IS EXPECTED TO RETURN TO MUCH OF THE COAST WITH MODELS
SHOWING HIGH BOUNDARY LAYER RELATIVE HUMIDITY VALUES RETURNING
OVERNIGHT. EXPECT A RETURN OF IFR TO LIFR CONDITIONS ALONG MUCH OF
COASTAL CALIFORNIA TONIGHT. OTHERWISE INTERIOR AREAS SHOULD REMAIN
MOSTLY CLEAR EXCEPT FOR SMOKE GENERATED BY FIRES IN SISKIYOU,
TRINITY, AND MENDOCINO COUNTIES. KML

&&

.MARINE...THE 1730Z ASCAT PASS TODAY REVEALED LIGHT SOUTHERLY WINDS
ACROSS THE COASTAL WATERS WHICH VALIDATED CANCELLING THE SMALL CRAFT
ADVISORY FOR THE NORTHERN OUTER WATERS AT THE 9 AM UPDATE. LIGHT AND
PREDOMINATELY SOUTHERLY WINDS SHALL PERSIST OVERNIGHT AND THEN TURN
NORTHERLY STARTING WEDNESDAY. WINDS WILL BEGIN TO INCREASE WEDNESDAY
AS A PACIFIC RIDGE PUSHES TOWARDS THE WEST COAST CAUSING THE
PRESSURE GRADIENT TO TIGHTEN, ESPECIALLY ACROSS THE NORTHERN WATERS.
NORTHERLY WINDS WILL REACH NEAR SMALL CRAFT CONDITIONS THURSDAY AND
SUSTAIN THROUGH THE WEEKEND. WINDS WILL BUILD MORE SUBSTANTIALLY
EARLY NEXT WEEK AS A PACIFIC RIDGE INTERACTS WITH THE CALIFORNIA
THERMAL TROUGH CAUSING WINDS TO INCREASE TO NEAR GALE CONDITIONS.

THE MAIN MARINE CONCERN FOR THE NEAR TERM IS SOUTHERLY SWELL
GENERATED BY TROPICAL SYSTEMS IN THE SOUTHEASTERN PACIFIC OFF THE
COAST OF MEXICO. A 1 TO 2 FT WAVE AROUND 14 SECONDS WILL CONTINUE TO
IMPACT THE COASTAL WATERS THROUGH THE WEEKEND. A HIGHER PERIOD SWELL
GENERATED FROM HURRICANE MARIE IS FORECAST TO IMPACT THE COASTAL
WATERS LATER TONIGHT. SOME WAVE RIDER BUOYS ALONG SOUTHERN
CALIFORNIA SHOWED INDICATIONS OF THE SWELL ARRIVING AND EVEN
IMPACTING SHELTERED LOCATIONS ALONG THE COAST. COMPARISONS OF
OBSERVED DATA AND MODEL DATA SHOW THE SWELL SHOULD ARRIVE ON TIME,
HOWEVER, MODELS MAY BE A LITTLE TOO BIG IN THE SIZE. THE WAVE DECAY
CALCULATOR INDICATES THAT THE FORE FRONT OF THE SWELL OBSERVED IN
SOUTHERN CALIFORNIA WILL ARRIVE TO THE EUREKA COASTAL WATERS AT
APPROXIMATELY 3 FT AT 17 SECONDS AND PEAK AROUND 4 TO 5 FT AT 15
SECONDS. A MARINE WEATHER STATEMENT WAS ISSUED TO HIGHLIGHT THE
POTENTIAL THREATS TO MARINERS INCLUDING: STRONGER CURRENTS,
INCREASED SHOALING HAZARDS THROUGH WAVE SET BEHAVIOR, AND THE
IMPACT OF SOUTH AND SOUTHWEST FACING ANCHORAGES AND COVES THAT ARE
TYPICALLY SHELTERED FROM NORTHWEST WAVES. IN ADDITION, THE SWELL
POSES A THREAT TO INDIVIDUALS THAT RECREATE IN OR NEAR THE OCEAN
INCLUDING: SURFERS, ABALONE DIVERS, AND BEACH GOERS. COASTAL BUOYS
WILL NEED TO BE MONITORED OVERNIGHT FOR THE ARRIVAL OF THIS SWELL
AND ADJUSTMENTS WILL NEED TO BE MADE AS NECESSARY. KML

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...NONE.

&&

$$

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HTTP://WWW.FACEBOOK.COM/NWSEUREKA
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000
FXUS66 KEKA 262244
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
344 PM PDT TUE AUG 26 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE WEST COAST
THROUGH THURSDAY...RESULTING IN HIGHER TEMPERATURES AND DRIER
CONDITIONS ACROSS THE INTERIOR. TEMPERATURES WILL TREND DOWNWARD
TOWARD THE END OF THE WEEK AS THE RIDGE MOVES INLAND AND IS
REPLACED BY AN UPPER LEVEL TROUGH.

&&

.DISCUSSION...GENERALLY QUIET WX PATTERN CONTINUES. THE UPPER TROF
E OF THE AREA WILL CONTINUE TO MOVE E AND FILL. AN UPPER RIDGE
WILL BUILD OVER THE W COAST INTO WED...THEN WEAKEN AS AN UPPER
TROF DIGS OVER THE GULF OF AK AND OFF THE PAC NW COAST.
TEMPERATURES WILL BE WARM THRU THU OVER THE INTERIOR....THEN DROP
BACK TO NEAR NORMAL FOR THE WEEKEND.

LOW CLOUDINESS HAS DECREASED TODAY OVER THE S COASTAL WATERS...
LIKELY IN RESPONSE TO SOME ISENTROPIC DESCENT AND CLOUD- LEVEL
DIVERGENCE. CLOUDS ARE EXPECTED TO FILL BACK IN LATER TONIGHT. LOW
CLOUDS WILL CONTINUE OVER THE COASTAL WATERS AND IMMEDIATE COAST
THIS WEEK...WITH CLOUDS PULLING BACK TO THE COAST DURING EACH
AFTERNOON.

MODELS APPEAR TO BE LATCHING ONTO A CONSISTENT SOLUTIONS WITH
RESPECT TO HURRICANE MARIE AND ITS INTERACTION WITH THE DIGGER E
PAC TROF. IT APPEARS MARIE WILL SLIDE TO THE S OF THE TROF WITH
LIMITED MOISTURE BEING ENTRAINED INTO THE TROF. DID NOT MAKE ANY
CHANGES TO PRECIP FORECAST FOR THE WEEKEND. HOWEVER...IF THE TROF
ENTRAINS MORE MOISTURE FROM MARIE OR CONTAINS MORE MOISTURE
ITSELF... POPS MAY NEED TO BE RE-INTRODUCED. IF MORE MOISTURE IS
AVAILABLE... THIS STILL LOOKS LIKE A LOW QPF EVENT. /SEC

&&

.AVIATION...STRATUS REMAINED EXTENSIVE ACROSS COASTAL CALIFORNIA
TODAY WITH CLEARING FROM THE SOUTH. EDDIES HELPED FEW PARTS OF THE
COAST NORTH OF CAPE MENDOCINO TO CLEAR MOMENTARILY THIS AFTERNOON.
STRATUS IS EXPECTED TO RETURN TO MUCH OF THE COAST WITH MODELS
SHOWING HIGH BOUNDARY LAYER RELATIVE HUMIDITY VALUES RETURNING
OVERNIGHT. EXPECT A RETURN OF IFR TO LIFR CONDITIONS ALONG MUCH OF
COASTAL CALIFORNIA TONIGHT. OTHERWISE INTERIOR AREAS SHOULD REMAIN
MOSTLY CLEAR EXCEPT FOR SMOKE GENERATED BY FIRES IN SISKIYOU,
TRINITY, AND MENDOCINO COUNTIES. KML

&&

.MARINE...THE 1730Z ASCAT PASS TODAY REVEALED LIGHT SOUTHERLY WINDS
ACROSS THE COASTAL WATERS WHICH VALIDATED CANCELLING THE SMALL CRAFT
ADVISORY FOR THE NORTHERN OUTER WATERS AT THE 9 AM UPDATE. LIGHT AND
PREDOMINATELY SOUTHERLY WINDS SHALL PERSIST OVERNIGHT AND THEN TURN
NORTHERLY STARTING WEDNESDAY. WINDS WILL BEGIN TO INCREASE WEDNESDAY
AS A PACIFIC RIDGE PUSHES TOWARDS THE WEST COAST CAUSING THE
PRESSURE GRADIENT TO TIGHTEN, ESPECIALLY ACROSS THE NORTHERN WATERS.
NORTHERLY WINDS WILL REACH NEAR SMALL CRAFT CONDITIONS THURSDAY AND
SUSTAIN THROUGH THE WEEKEND. WINDS WILL BUILD MORE SUBSTANTIALLY
EARLY NEXT WEEK AS A PACIFIC RIDGE INTERACTS WITH THE CALIFORNIA
THERMAL TROUGH CAUSING WINDS TO INCREASE TO NEAR GALE CONDITIONS.

THE MAIN MARINE CONCERN FOR THE NEAR TERM IS SOUTHERLY SWELL
GENERATED BY TROPICAL SYSTEMS IN THE SOUTHEASTERN PACIFIC OFF THE
COAST OF MEXICO. A 1 TO 2 FT WAVE AROUND 14 SECONDS WILL CONTINUE TO
IMPACT THE COASTAL WATERS THROUGH THE WEEKEND. A HIGHER PERIOD SWELL
GENERATED FROM HURRICANE MARIE IS FORECAST TO IMPACT THE COASTAL
WATERS LATER TONIGHT. SOME WAVE RIDER BUOYS ALONG SOUTHERN
CALIFORNIA SHOWED INDICATIONS OF THE SWELL ARRIVING AND EVEN
IMPACTING SHELTERED LOCATIONS ALONG THE COAST. COMPARISONS OF
OBSERVED DATA AND MODEL DATA SHOW THE SWELL SHOULD ARRIVE ON TIME,
HOWEVER, MODELS MAY BE A LITTLE TOO BIG IN THE SIZE. THE WAVE DECAY
CALCULATOR INDICATES THAT THE FORE FRONT OF THE SWELL OBSERVED IN
SOUTHERN CALIFORNIA WILL ARRIVE TO THE EUREKA COASTAL WATERS AT
APPROXIMATELY 3 FT AT 17 SECONDS AND PEAK AROUND 4 TO 5 FT AT 15
SECONDS. A MARINE WEATHER STATEMENT WAS ISSUED TO HIGHLIGHT THE
POTENTIAL THREATS TO MARINERS INCLUDING: STRONGER CURRENTS,
INCREASED SHOALING HAZARDS THROUGH WAVE SET BEHAVIOR, AND THE
IMPACT OF SOUTH AND SOUTHWEST FACING ANCHORAGES AND COVES THAT ARE
TYPICALLY SHELTERED FROM NORTHWEST WAVES. IN ADDITION, THE SWELL
POSES A THREAT TO INDIVIDUALS THAT RECREATE IN OR NEAR THE OCEAN
INCLUDING: SURFERS, ABALONE DIVERS, AND BEACH GOERS. COASTAL BUOYS
WILL NEED TO BE MONITORED OVERNIGHT FOR THE ARRIVAL OF THIS SWELL
AND ADJUSTMENTS WILL NEED TO BE MADE AS NECESSARY. KML

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...NONE.

&&

$$

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

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HTTP://WWW.FACEBOOK.COM/NWSEUREKA
HTTP://WWW.TWITTER.COM/NWSEUREKA






000
FXUS66 KEKA 261048
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
348 AM PDT TUE AUG 26 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL BUILD OVER THE WEST COAST
TODAY AND REMAIN IN PLACE THROUGH THURSDAY...RESULTING IN HIGHER
TEMPERATURES AND DRIER CONDITIONS ACROSS THE INTERIOR.
TEMPERATURES WILL TREND DOWNWARD TOWARDS THE END OF THE WEEK AS
THE RIDGE MOVES INLAND AND IS REPLACED BY AN UPPER LEVEL TROUGH.

&&

.DISCUSSION...AN UPPER LEVEL RIDGE WILL BUILD OVER THE WEST COAST
TODAY AND REMAIN IN PLACE THROUGH THURSDAY. AT THE SAME TIME HIGH
PRESSURE WILL BUILD OVER THE SOUTHWEST UNITED STATES. THIS WILL
LEAD TO HIGHER TEMPERATURES (MOSTLY 90S) AND DRIER CONDITIONS
ACROSS THE INTERIOR TODAY THROUGH THURSDAY. EXPECT LOW CLOUDS AND
FOG ALONG THE COAST EACH NIGHT AND MORNING, WITH CLEARING TO THE
IMMEDIATE COAST EACH AFTERNOON. TEMPERATURES WILL BEGIN TO TREND
DOWNWARD ON FRIDAY AS THE RIDGE MOVES INLAND AND IS REPLACED BY AN
UPPER LEVEL TROUGH THAT WILL MOVE OVER THE WEST COAST. IN REGARDS
TO POTENTIAL RAINFALL FROM THE REMNANTS OF HURRICANE MARIE, MODELS
NOW HAVE THE REMANT STORM/LOW HOVERING WELL OFF OF THE SOUTHERN
CALIFORNIA COAST THIS WEEKEND INSTEAD OF MOVING TO THE NORTH AND
HAVING SOME OF ITS MOISTURE GETTING DRAWN INTO THE APPROACHING
TROUGH. THE POTENTIAL FOR THAT STILL EXISTS, BUT NOW MODELS SEEM
TO INDICATE A BETTER CHANCE OF PRECIPITATION ACCOMPANYING THE
TROUGH AS IT DIGS DOWN FROM THE PACIFIC NORTHWEST. HOWEVER, THE
GREATEST THREAT APPEARS TO BE WELL TO OUR NORTH. THERE REMAINS
HIGH UNCERTAINTY WITH ANY WEEKEND PRECIPITATION. WITH THE DRIER
TRENDING MODELS AND WITH OUR NEIGHBORS REMOVING THE RAIN FROM
THEIR FORECASTS, RELUCTANTLY DECIDED TO LOWER POPS FOR THE WEEKEND
(TO AROUND 10%), MAINLY TO MATCH UP WITH OUR NEIGHBORS. OTHERWISE,
LOADED THE CONSMODEL FOR MOST OF THE GRIDS.

&&

.AVIATION...HIGH PRESSURE CONTINUES TO BUILD BACK INTO THE AREA
THIS MORNING. WEAK OFFSHORE IN THE NORTH IS KEEPING IT FROM
SPREADING TOO FAR INLAND. THERE ARE SOUTHERLY WINDS IN UKIAH WHICH
WILL LIKELY BRING SOME STRATUS NORTH TO THE UKI AIRPORT BY
MORNING. THE STRATUS WILL PUSH BACK TO NEAR THE COAST THIS
AFTERNOON. SATELLITE IS SHOWING WIDESPREAD STRATUS OFFSHORE THIS
MORNING SO ALTHOUGH WE MAY SEE A FEW HOURS OF SCATTERED CLOUDS AT
THE COASTAL AIRPORTS DO NOT EXPECT THE STRATUS TO COMPLETELY
CLEAR. TONIGHT EXPECT STRATUS WILL RETURN BY SUNSET AND QUICKLY
PUSH INLAND. THE MARINE LAYER WILL LIKELY BE THINNER AS HIGH
PRESSURE CONTINUES TO BUILD IN. THIS WILL MAKE IT UNLIKELY FOR
UKIAH TO SEE STRATUS AGAIN. MKK

&&

.MARINE...WINDS ARE MAINLY ACROSS THE AREA AS HIGH PRESSURE BUILDS
INTO THE PACIFIC NORTHWEST. DUE THE SOUTHWEST TO NORTHEAST
ORIENTATION OF THIS HIGH PRESSURE THE SURFACE PRESSURE GRADIENT IS
REMAINING RELAXED. THERE IS A NORTHWEST WAVE OF 5 TO 7 FT THAT IS
DECAYING AS THE WINDS DIMINISH. LEFT THE SCA ADVISORY OUT FOR THE
NORTHERN OUTER WATERS...ALTHOUGH IT LOOKS A BIT MARGINAL.
CANCELLED THE SCA FOR THE SOUTHERN OUTER WATERS AS SEAS APPEAR TO
HAVE DROPPED BELOW CRITERIA. HIGH PRESSURE REMAINS IN PLACE AND
WINDS WILL INCREASE SLIGHTLY THROUGH THE WEEK...ALTHOUGH THEY
SHOULD REMAIN MAINLY BELOW 20 KT. LATE FRIDAY INTO SATURDAY A WEAK
SYSTEM MOVES THROUGH AND WILL DIMINISH WINDS ONCE AGAIN. SUNDAY
HIGH PRESSURE BUILDS BACK IN AND RETURNS TO THE MORE NORMAL
ORIENTATION WHICH BRINGS A RETURN OF 20 TO 30 KT NORTHERLY WINDS
ON SUNDAY AND MONDAY.

TROPICAL SYSTEMS WELL TO THE SOUTH OF THE AREA CONTINUE TO SEND
WAVES NORTH OF THE AREA. CURRENTLY THERE IS A 1 TO 2 FT SOUTHERLY
WAVE AT 14 SECONDS FROM SEVERAL SMALL TROPICAL SYSTEMS. THIS WILL
PERSIST THROUGH THE WEEK. WEDNESDAY THE BIGGER WAVES FROM
HURRICANE MARIA (ALSO WELL TO THE SOUTH OF THE AREA) ARE EXPECTED
TO START REACHING THE AREA. THESE INITIALLY WILL BE AROUND 2 FT AT
17 SECONDS AND BUILD TO 3 TO 4 FT AT 15 SECONDS BY LATE WEDNESDAY.
CURRENT MODELS ARE SHOWING THESE TO HAVE A LITTLE BIT OF AN
EASTERLY COMPONENT TO THEM AND AND INDICATE THEY WILL NOT MAKE IT
TO THE COAST NORTH OF CAPE MENDOCINO. THIS WILL NEED TO BE
MONITORED AS THEY START MOVING INTO THE AREA. THESE WAVES ARE
EXPECTED TO PERSIST THROUGH THE WEEKEND. MKK

&&

.EKA WATCHES/WARNINGS/ADVISORIES...

CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...

SMALL CRAFT ADVISORY FOR PZZ470.

&&

$$

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

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HTTP://WWW.FACEBOOK.COM/NWSEUREKA
HTTP://WWW.TWITTER.COM/NWSEUREKA





000
FXUS66 KEKA 261048
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
348 AM PDT TUE AUG 26 2014

.SYNOPSIS...AN UPPER LEVEL RIDGE WILL BUILD OVER THE WEST COAST
TODAY AND REMAIN IN PLACE THROUGH THURSDAY...RESULTING IN HIGHER
TEMPERATURES AND DRIER CONDITIONS ACROSS THE INTERIOR.
TEMPERATURES WILL TREND DOWNWARD TOWARDS THE END OF THE WEEK AS
THE RIDGE MOVES INLAND AND IS REPLACED BY AN UPPER LEVEL TROUGH.

&&

.DISCUSSION...AN UPPER LEVEL RIDGE WILL BUILD OVER THE WEST COAST
TODAY AND REMAIN IN PLACE THROUGH THURSDAY. AT THE SAME TIME HIGH
PRESSURE WILL BUILD OVER THE SOUTHWEST UNITED STATES. THIS WILL
LEAD TO HIGHER TEMPERATURES (MOSTLY 90S) AND DRIER CONDITIONS
ACROSS THE INTERIOR TODAY THROUGH THURSDAY. EXPECT LOW CLOUDS AND
FOG ALONG THE COAST EACH NIGHT AND MORNING, WITH CLEARING TO THE
IMMEDIATE COAST EACH AFTERNOON. TEMPERATURES WILL BEGIN TO TREND
DOWNWARD ON FRIDAY AS THE RIDGE MOVES INLAND AND IS REPLACED BY AN
UPPER LEVEL TROUGH THAT WILL MOVE OVER THE WEST COAST. IN REGARDS
TO POTENTIAL RAINFALL FROM THE REMNANTS OF HURRICANE MARIE, MODELS
NOW HAVE THE REMANT STORM/LOW HOVERING WELL OFF OF THE SOUTHERN
CALIFORNIA COAST THIS WEEKEND INSTEAD OF MOVING TO THE NORTH AND
HAVING SOME OF ITS MOISTURE GETTING DRAWN INTO THE APPROACHING
TROUGH. THE POTENTIAL FOR THAT STILL EXISTS, BUT NOW MODELS SEEM
TO INDICATE A BETTER CHANCE OF PRECIPITATION ACCOMPANYING THE
TROUGH AS IT DIGS DOWN FROM THE PACIFIC NORTHWEST. HOWEVER, THE
GREATEST THREAT APPEARS TO BE WELL TO OUR NORTH. THERE REMAINS
HIGH UNCERTAINTY WITH ANY WEEKEND PRECIPITATION. WITH THE DRIER
TRENDING MODELS AND WITH OUR NEIGHBORS REMOVING THE RAIN FROM
THEIR FORECASTS, RELUCTANTLY DECIDED TO LOWER POPS FOR THE WEEKEND
(TO AROUND 10%), MAINLY TO MATCH UP WITH OUR NEIGHBORS. OTHERWISE,
LOADED THE CONSMODEL FOR MOST OF THE GRIDS.

&&

.AVIATION...HIGH PRESSURE CONTINUES TO BUILD BACK INTO THE AREA
THIS MORNING. WEAK OFFSHORE IN THE NORTH IS KEEPING IT FROM
SPREADING TOO FAR INLAND. THERE ARE SOUTHERLY WINDS IN UKIAH WHICH
WILL LIKELY BRING SOME STRATUS NORTH TO THE UKI AIRPORT BY
MORNING. THE STRATUS WILL PUSH BACK TO NEAR THE COAST THIS
AFTERNOON. SATELLITE IS SHOWING WIDESPREAD STRATUS OFFSHORE THIS
MORNING SO ALTHOUGH WE MAY SEE A FEW HOURS OF SCATTERED CLOUDS AT
THE COASTAL AIRPORTS DO NOT EXPECT THE STRATUS TO COMPLETELY
CLEAR. TONIGHT EXPECT STRATUS WILL RETURN BY SUNSET AND QUICKLY
PUSH INLAND. THE MARINE LAYER WILL LIKELY BE THINNER AS HIGH
PRESSURE CONTINUES TO BUILD IN. THIS WILL MAKE IT UNLIKELY FOR
UKIAH TO SEE STRATUS AGAIN. MKK

&&

.MARINE...WINDS ARE MAINLY ACROSS THE AREA AS HIGH PRESSURE BUILDS
INTO THE PACIFIC NORTHWEST. DUE THE SOUTHWEST TO NORTHEAST
ORIENTATION OF THIS HIGH PRESSURE THE SURFACE PRESSURE GRADIENT IS
REMAINING RELAXED. THERE IS A NORTHWEST WAVE OF 5 TO 7 FT THAT IS
DECAYING AS THE WINDS DIMINISH. LEFT THE SCA ADVISORY OUT FOR THE
NORTHERN OUTER WATERS...ALTHOUGH IT LOOKS A BIT MARGINAL.
CANCELLED THE SCA FOR THE SOUTHERN OUTER WATERS AS SEAS APPEAR TO
HAVE DROPPED BELOW CRITERIA. HIGH PRESSURE REMAINS IN PLACE AND
WINDS WILL INCREASE SLIGHTLY THROUGH THE WEEK...ALTHOUGH THEY
SHOULD REMAIN MAINLY BELOW 20 KT. LATE FRIDAY INTO SATURDAY A WEAK
SYSTEM MOVES THROUGH AND WILL DIMINISH WINDS ONCE AGAIN. SUNDAY
HIGH PRESSURE BUILDS BACK IN AND RETURNS TO THE MORE NORMAL
ORIENTATION WHICH BRINGS A RETURN OF 20 TO 30 KT NORTHERLY WINDS
ON SUNDAY AND MONDAY.

TROPICAL SYSTEMS WELL TO THE SOUTH OF THE AREA CONTINUE TO SEND
WAVES NORTH OF THE AREA. CURRENTLY THERE IS A 1 TO 2 FT SOUTHERLY
WAVE AT 14 SECONDS FROM SEVERAL SMALL TROPICAL SYSTEMS. THIS WILL
PERSIST THROUGH THE WEEK. WEDNESDAY THE BIGGER WAVES FROM
HURRICANE MARIA (ALSO WELL TO THE SOUTH OF THE AREA) ARE EXPECTED
TO START REACHING THE AREA. THESE INITIALLY WILL BE AROUND 2 FT AT
17 SECONDS AND BUILD TO 3 TO 4 FT AT 15 SECONDS BY LATE WEDNESDAY.
CURRENT MODELS ARE SHOWING THESE TO HAVE A LITTLE BIT OF AN
EASTERLY COMPONENT TO THEM AND AND INDICATE THEY WILL NOT MAKE IT
TO THE COAST NORTH OF CAPE MENDOCINO. THIS WILL NEED TO BE
MONITORED AS THEY START MOVING INTO THE AREA. THESE WAVES ARE
EXPECTED TO PERSIST THROUGH THE WEEKEND. MKK

&&

.EKA WATCHES/WARNINGS/ADVISORIES...

CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...

SMALL CRAFT ADVISORY FOR PZZ470.

&&

$$

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

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