Frost Advisory 7, NWS Eureka, CA

000 
WWUS76 KEKA 300911
NPWEKA

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
211 AM PDT MON MAR 30 2009

CAZ002-301500-
/O.EXA.KEKA.FR.Y.0007.090330T0900Z-090330T1500Z/
MENDOCINO COAST-
211 AM PDT MON MAR 30 2009

...FROST ADVISORY IN EFFECT UNTIL 8 AM PDT THIS MORNING...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT UNTIL 8 AM PDT THIS MORNING. 

MOSTLY CLEAR SKIES AND LIGHT WINDS HAVE ALLOWED TEMPERATURES TO DROP
INTO THE MID 30S AT LOCATIONS AWAY FROM THE IMMEDIATE COAST.
TEMPERATURES ARE EXPECTED TO BOTTOM OUT IN THE LOWER TO MIDDLE
30S BY SUNRISE FOR SHELTERED INTERIOR LOCATIONS. STRONGER WINDS
WILL LIKELY KEEP LOCATIONS AT THE COAST IN LOWER 40S THROUGH
SUNRISE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

CAZ001-301500-
/O.CON.KEKA.FR.Y.0007.000000T0000Z-090330T1500Z/
REDWOOD COAST-
211 AM PDT MON MAR 30 2009

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING...

FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING.

TEMPERATURES HAVE DROPPED INTO THE LOW 40S AT THE IMMEDIATE COAST
AND INTO THE UPPER 30S AT LOCATIONS AWAY FROM THE COAST OVERNIGHT
UNDER MOSTLY CLEAR SKIES. TEMPERATURES ARE EXPECTED TO BOTTOM OUT
IN THE MIDDLE 30S BY SUNRISE THIS MORNING AT THE COAST...WITH
COLDER TEMPERATURES FOR SHELTERED INTERIOR LOCATIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

000 
WWUS76 KEKA 301445
NPWEKA

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
745 AM PDT MON MAR 30 2009

CAZ001-002-301545-
/O.CAN.KEKA.FR.Y.0007.000000T0000Z-090330T1500Z/
REDWOOD COAST-MENDOCINO COAST-
745 AM PDT MON MAR 30 2009

...FROST ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS CANCELLED THE FROST
ADVISORY. 

TEMPERATURES DIPPED INTO THE LOWER TO MID 30S EARLY THIS
MORNING...BUT WERE STARTING TO INCREASE INTO THE UPPER 30S AND
LOWER 40S. THE FROST ADVISORY WILL BE ALLOWED TO EXPIRE THIS
MORNING.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
434 AM PDT SUN MAR 29 2009

.SYNOPSIS...HIGH PRESSURE BUILDING INTO THE PACIFIC NORTHWEST WILL
BRING CLEARING SKIES AND BLUSTERY NORTH WINDS TO THE REGION TODAY
THROUGH MONDAY. A WEAK FRONTAL BOUNDARY WILL BRING A SLIGHT CHANCE
OF RAIN TO THE AREA ON TUESDAY NIGHT.

&&

.SHORT TERM...TODAY THROUGH WEDNESDAY...A COLD FRONT PASSED OVER THE
AREA TODAY. RAIN TOTALS WERE VERY LIGHT WITH THE HIGHEST RAINFALL
TOTALS REGISTERED IN DEL NORTE AND NORTHERN HUMBOLDT COUNTIES AT
APPROX 0.02 INCHES. BLUSTERY NORTH WINDS HAVE PICKED UP BEHIND THE
FRONT...AND WILL CONTINUE TO MAKE THEIR PRESENCE KNOWN OVER NW CA
THROUGH MIDWEEK. TEMPERATURES HAVE FALLEN WITH FRONTAL PASSAGE...AND
A CHILLY MORNING CAN BE EXPECTED WITH LOW TEMPS RUNNING IN THE LOW
40S TO UPPER 30S. FORECAST HIGHS FOR TODAY WILL STRUGGLE TO MAKE IT
INTO THE 60S ACROSS THE CWA. SHORT TERM FORECAST CONCERN IS WHETHER
OR NOT A FROST ADVISORY WILL BE NEEDED SUNDAY NIGHT ALONG THE COAST.
WITHOUT THE GUSTY NORTH WINDS...IT WOULD APPEAR TO BE A SLAM DUNK.
HOWEVER...WINDS ARE FORECAST TO REMAIN GUSTY...ALBEIT LESS SO THAN
DURING THE DAY...THROUGH THE NIGHT. THIS WOULD IMPEDE FROST
DEVELOPMENT AND THE NEED FOR AN ADVISORY AND HAVE HELD OFF ON AN
ISSUANCE ACCORDINGLY WITH THIS PACKAGE. MONDAY THROUGH TUESDAY WILL
BRING CLEAR AND DRY CONDITIONS WITH A CONTINUATION OF GUSTY NORTH
WINDS EXPECTED. NEXT CHANCE FOR RAIN WILL BE TUESDAY NIGHT INTO
WEDNESDAY AS A WEAK FRONTAL BOUNDARY APPROACHES THE COAST. NO
SIGNIFICANT RAINFALL IS EXPECTED. BK

.LONG TERM...WEDNESDAY NIGHT THROUGH SATURDAY...MODELS SHOW A WEAK
SHORTWAVE AND ASSOCIATED COLD FRONT APPROACHING THE NORTH COAST
WEDNESDAY NIGHT.  HAVE PUSHED POPS FOR THURSDAY UPWARD TOWARD GFS
MOS VALUES...AS OPERATIONAL AND ENSEMBLE MODEL OUTPUT SHOW GOOD
AGREEMENT IN BRINGING RAINFALL TO THE REDWOOD COAST.  SHOWERS WILL
TAPER OFF THURSDAY NIGHT INTO FRIDAY AS THE TROUGH AND FRONT MOVE
EAST OF THE REGION...AND THE UPPER FLOW TURNS NORTHWESTERLY.

MODEL AGREEMENT REGARDING DECENT RIDGING BUILDING OVER THE WEST
COAST FRIDAY NIGHT AND SATURDAY IS GOOD...AND WILL GO WITH A DRY
FORECAST WITH CLEARING AND WARMING.  LOOKING JUST OUTSIDE THE
OFFICIAL FORECAST PERIOD...MODELS POINT TOWARD A DEEP TROUGH MOVING
INTO THE NORTHEAST PACIFIC BY SATURDAY NIGHT.  THE 06Z GFS HAS MOVED
INTO MUCH BETTER ALIGNMENT WITH THE 00Z GFS ENS MEAN AND 00Z ECMWF
SOLUTIONS ALOFT IN REFLECTING A SLOWER TIMING OF THIS SYSTEM.
ALTHOUGH DETAILS ARE STILL SKETCHY...IT APPEARS THIS SYSTEM WILL
BRING ANOTHER SHOT OF RAIN TO NW CALIFORNIA EARLY NEXT WEEK. KL

&&

.AVIATION...GUSTY NORTH WINDS ARE EXPECTED TO PERSIST THROUGH THE
END OF THE PERIOD AS THE GRADIENT REMAINS TIGHT IN WAKE OF THE COLD
FRONT THAT PASSED. LINGERING CLOUDS AT AROUND FL040 WILL PERSIST
THROUGH THE PERIOD WITH NO CIG ISSUES EXPECTED. VIS WILL REMAIN
EXCELLENT. BK

&&

.MARINE...NORTH WINDS ARE QUICKLY RAMPING UP OVER THE SOUTHERN
WATERS EARLY THIS MORNING.  AS OF 10 UTC (3AM PDT)...BUOY 14 WAS
REPORTING WINDS OF 29 GUSTING TO 37 KNOTS...AND BUOY 22 (WHICH IS
CURRENTLY DRIFTING THROUGH THE SOUTHERN OUTER WATERS ABOUT 15NM
SOUTHWEST OF CAPE MENDOCINO) REPORTED WINDS 27 GUSTING TO 31 KTS.
GALE WARNINGS REMAIN IN EFFECT FOR ALL MARINE ZONES EXCEPT THE
NORTHERN INNER WATERS.  WINDS WILL BE STRONGEST OVER THE SOUTHERN
OUTER WATERS...AND THEREFORE A HAZ SEAS WARNING IS IN EFFECT THERE
WHILE ONLY SCA SEAS PERSIST ELSEWHERE.  A WEAK FRONT MOVING THROUGH
THE PAC NW TUESDAY WILL WEAKEN THE PRESSURE GRADIENT AND ALLOW WINDS
TO EASE.  NORTH WINDS WILL INCREASE AGAIN OVER THE WATERS NEXT
FRIDAY INTO SATURDAY...WITH A GALE-FORCE GUSTS LOOKING POSSIBLE
AGAIN IN THE SOUTHERN WATERS.

ANOTHER FEATURE OF NOTE IS AN AREA OF LARGE NORTHWEST SWELL FORECAST
BY THE ENP TO REACH THE WATERS BY THURSDAY.  THESE SEAS WILL BE
GENERATED BY A SFC LOW TRAVERSING THE GULF OF ALASKA TUESDAY INTO
WEDNESDAY.  MODEL AGREEMENT IS FAIR REGARDING THE EVOLUTION OF THIS
LOW...AND HAVE BUMPED UP THE SWELL FORECAST ACCORDINGLY.  HOWEVER...
GIVEN THE UNCERTAINTY AND THE FACT THAT THE SWELL IS STILL A FEW
DAYS AWAY...HAVE GONE A COUPLE FEET BELOW THE ENP SWELL HEIGHTS. KL

NOTE...BUOY 22 HAS GONE ADRIFT AND IS CURRENTLY MOVING TO THE
SOUTHWEST. AS IT CONTINUES TO DRIFT...ITS POSITION WILL BE REPORTED
ON THE NATIONAL DATA BUOY CENTER WEB PAGE. IT IS STILL REPORTING
DATA AND WILL LIKELY CONTINUE TO DO SO UNTIL IT IS RECOVERED.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY FOR WINDS AND HAZARDOUS SEAS UNTIL MONDAY NIGHT
FOR PZZ450.

SMALL CRAFT ADVISORY FOR WINDS UNTIL 8 AM PDT THIS MORNING FOR
PZZ455-470.

GALE WARNING FROM 8 AM THIS MORNING TO 11 PM PDT THIS EVENING FOR
PZZ455-470.

SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 5 AM PDT TUESDAY FOR
PZZ455-470.

GALE WARNING UNTIL MONDAY NIGHT FOR PZZ475.

HAZARDOUS SEAS WARNING UNTIL MONDAY NIGHT FOR PZZ475.

&&

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