Frost Advisory 1, NWS Eureka, CA

000 
WWUS76 KEKA 311455
NPWEKA

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
755 AM PDT MON MAR 31 2008


CAZ001-311600-
/O.EXP.KEKA.FZ.W.0001.000000T0000Z-080331T1500Z/
REDWOOD COAST-
755 AM PDT MON MAR 31 2008

...FREEZE WARNING WILL EXPIRE AT 8 AM PDT THIS MORNING...

THE FREEZE WARNING WILL BE ALLOWED TO EXPIRE AT 8 AM PDT THIS
MORNING.


$$

CAZ002-311600-
/O.EXP.KEKA.FR.Y.0001.000000T0000Z-080331T1500Z/
MENDOCINO COAST-
755 AM PDT MON MAR 31 2008

...FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING...

THE FROST ADVISORY WILL BE ALLOWED TO EXPIRE AT 8 AM PDT THIS
MORNING.

$$

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE EUREKA CA
430 AM PDT SUN MAR 30 2008

.SYNOPSIS...DRIER WEATHER ALONG THE COAST AND SLIGHTLY WARMER WEATHER
IN THE INTERIOR WILL PREVAIL TODAY THROUGH TUESDAY. A SERIES OF
PACIFIC STORM SYSTEMS WILL PRODUCE A CHANCE OF PRECIPITATION EACH
DAY FROM WEDNESDAY THROUGH NEXT WEEKEND.

&&

.DISCUSSION...GUSTY WINDS THAT AFFECTED THE FORECAST AREA OVERNIGHT
HAVE BEGUN TO DIMINISH THIS MORNING AS HIGH PRESSURE CONTINUES TO
BUILD INLAND TO THE NORTH...AND SURFACE WINDS SHIFT FROM THE NORTH
TO A MORE EASTERLY DIRECTION. HOWEVER...BREEZY CONDITIONS OVER THE
COASTAL WATERS WILL KEEP THE LOWER ATMOSPHERE SUFFICIENTLY MIXED
THAT WIDESPREAD SUB-FREEZING TEMPERATURES ARE NOT EXPECTED ALONG THE
REDWOOD AND MENDOCINO COASTS THIS MORNING. SOME LOCALIZED AREAS WILL
DROP TO NEAR OR BELOW FREEZING...ESPECIALLY IN PROTECTED LOCATIONS.
TONIGHT MORE EFFICIENT COOLING WILL TAKE PLACE AS OFFSHORE FLOW
PRODUCES A DRIER AIRMASS AND MOSTLY CLEAR SKIES. SOME VERY LOCALIZED
PATCHY FOG IS FORECAST FOR NEAR-COASTAL AREAS...BUT THE EXPECTATION
IS FOR EFFICIENT RADIATIONAL COOLING UNDER LIGHT OFFSHORE FLOW ALONG
THE REDWOOD COAST. A FREEZE WARNING HAS BEEN ISSUED FOR ZONE 1 TO
COVER WIDESPREAD FROST FORMATION AND THE POSSIBLE DAMAGE TO
SENSITIVE VEGETATION. FOR THE MENDOCINO COAST...THE COOLING SHOULD
BE LESS DRAMATIC AS OFFSHORE FLOW WILL BE LESS PRONOUNCED...SO HAVE
ISSUED A FREEZE WATCH WITH THE EXPECTATION THAT A WARNING MAY BE
NEEDED...BUT A FROST ADVISORY MAY SUFFICE.

MODEL CONSISTENCY IS FAIRLY GOOD THROUGH THE SHORT TERM PORTION OF
THE FORECAST. THE DRYING AND WARMING TREND PREVIOUSLY MENTIONED IS
UNDERWAY...AND EXPECT TO SEE INLAND TEMPERATURES RISING INTO THE MID
TO UPPER 60S MONDAY AND TUESDAY. BOTH ECMWF AND GFS DEPICT AN UPPER
CLOSED LOW APPROACHING THE CALIFORNIA COAST TUESDAY INTO EARLY
WEDNESDAY...HOWEVER THE LATEST RUNS DEPICT A TRACK THAT IS FURTHER
SOUTH...NEAR OR SOUTH OF POINT CONCEPTION. THIS MAKES IT SLIGHTLY
LESS LIKELY THAT WRAP AROUND PRECIPITATION WILL AFFECT THE CWA...AND
AM CONCERNED THAT MODELS MAY BE TRENDING TOWARD AN EVEN MORE
SOUTHERLY TRAJECTORY. FOR NOW HAVE MAINTAINED THE LOW-END CHANCE
POPS IN THE FORECAST FOR WEDNESDAY THROUGH FRIDAY. HAVE EVEN LESS
CERTAINTY FOR THE WEEKENDS FORECAST AS MODEL DISCREPANCIES BECOME
WORSE FOR THE SATURDAY-SUNDAY TIME FRAME. CC

&&

.AVIATION...MOSTLY VFR FLIGHT CONDITIONS WITH CLEAR SKIES EXPECTED
TODAY. PATCHY FOG ALONG THE COAST AND COASTAL VALLEYS SHOULD
DISSIPATE AS NORTHERLY WINDS ALONG THE COAST PICK UP LATE THIS
MORNING. NORTHERLY WINDS ALONG THE COAST WILL NOT BE QUITE AS STRONG
AS YESTERDAY...BUT WILL STILL CHALLENGE TAKE-OFFS AND LANDINGS.
TEMPORARY MVFR CONDITIONS CAN BE EXPECTED WITH THE PATCHY FOG. TH

&&

.MARINE...NORTHERLY WINDS WILL REMAIN BREEZY OVER THE COASTAL
WATERS THROUGH THE DAY. THE NORTHERN OUTER WATERS AND SOUTHERN
WATERS WILL HAVE LOCAL GALE FORCE GUSTS BUT DO NOT EXPECT THE GALES
TO BE WIDESPREAD ENOUGH TO WARRANT A GALE WARNING. THE WINDS WILL
GENERATE HAZARDOUS SEAS...WITH OCCASIONAL WIND WAVES AS HIGH AS 10
FT. DO NOT THINK THE HIGH WIND WAVES WILL BE WIDESPREAD ENOUGH TO
ISSUE A HAZARDOUS SEAS WARNING.TH

&&

.EKA WATCHES/WARNINGS/ADVISORIES...SMALL CRAFT ADVISORY FOR WINDS
AND HAZARDOUS SEAS FROM PT ST GEORGE TO PT ARENA OUT 60NM.

&&

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