Frost Advisory 34, NWS Eureka, CA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
430 PM PDT SAT NOV 2 2013

.SYNOPSIS...A COLDER AIRMASS WILL PERSIST OVER THE REGION
FOR THE NEXT FEW DAYS. WARMER WEATHER WILL RETURN BY
MIDWEEK AS WEAK HIGH PRESSURE BUILDS BACK IN OVER THE WESTERN
STATES.

&&

.DISCUSSION...A POST FRONTAL COLD AIR MASS WILL SAG ACROSS THE
REGION THROUGH THE REMAINDER OF THE WEEKEND AND MONDAY. SOME AREAS
MAY SEE FROST TONIGHT...ESPECIALLY COLDEST INTERIOR VALLEY LOCATIONS
AND LOCALLY FAVORED AREAS ALONG THE COAST. BY TOMORROW NIGHT AND
INTO MONDAY...OVERNIGHT TEMPERATURES WILL LIKELY FALL BELOW FREEZING
ACROSS MANY INTERIOR AREAS...THOUGH NOTHING THAT IS PARTICULARLY
UNUSUAL FOR THIS TIME OF YEAR. A FREEZE WATCH HAS BEEN ISSUED FOR
INTERIOR AREAS OF MENDOCINO COUNTY AND NORTH COAST INTERIOR VALLEYS
FOR EARLY MONDAY MORNING. ALTHOUGH SOME NORTHERLY WINDS WILL PERSIST
EXPECTING THAT MUCH OF THE LOW LEVEL WINDS TO DECOUPLE ACROSS THE
LOWER ELEVATION VALLEYS. A WARM FRONT WILL ADVANCE TOWARD THE
PACIFIC NORTHWEST COAST ON MONDAY INTO TUESDAY BRINGING ANOTHER
CHANCE OF LIGHT WARM FRONTAL PRECIPITATION TO AREAS FROM CAPE
MENDOCINO NORTH. GENERALLY LIGHT RAIN IS EXPECTED WITH ONLY A FEW
HUNDREDTHS OF AN INCH FORECAST AT THIS TIME. THE REGION WILL THEN
DRY OUT TUESDAY NIGHT INTO WEDNESDAY AS RIDGING BUILDS BACK ALOFT
OVER THE WEST COAST. CHANCES FOR RAIN ARE DIMINISHING FOR THURSDAY
AS THE GFS AND ECMWF NOW INDICATING A MORE NORTHERLY TRACK FOR THE
ONCE PROMISING FRONT. A LARGER LOW PRESSURE SYSTEM MAY BRING
WIDESPREAD RAINFALL TO THE REGION NEXT WEEKEND.

&&

.AVIATION...A DRY AND BRISK NORTHERLY FLOW SHOULD KEEP AIRPORT
TERMINALS UNDER MAINLY VFR CONDITIONS THROUGH THE NEXT TAF
CYCLE.  THERE IS A SMALL CHANCE OF BRIEF MVFR CONDITIONS DUE TO
EARLY MORNING GROUND FOG OR STRATUS ALONG THE COAST AND VALLEY
LOCATIONS.

&&

.MARINE...NORTH WINDS AND SEAS WILL CONTINUE TO INCREASE THIS
AFTERNOON AND EVENING IN THE WAKE OF A COLD FRONT. FREQUENT GALE
FORCE GUSTS ARE EXPECTED IN THE SOUTHERN OFFSHORE WATERS THIS
AFTERNOON AND CONTINUING OCCASIONALLY THRU SUN EVENING. STEEP SHORT
PERIOD SEAS WILL CONTINUE TO BUILD THRU TONIGHT AND THEN GRADUALLY
SUBSIDE SUN AND MON. A NW SWELL TRAIN WILL ARRIVE MONDAY MORNING
WITH PERIODS AROUND 21 TO 24 SECONDS. THE SWELL WILL BUILD MON NIGHT
INTO TUE AND BECOME THE DOMINANT GROUP BY TUE. THERE IS A SLIGHT
THREAT OF SNEAKER WAVE ACTIVITY ON MONDAY AS THE FORERUNNERS ARRIVE
AND PERHAPS INTO TUE.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...

FREEZE WATCH IN EFFECT FOR CAZ003 AND CAZ076 LATE SUNDAY NIGHT
THROUGH MONDAY MORNING.

NORTHWEST CALIFORNIA COASTAL WATERS...
     SMALL CRAFT ADVISORY FROM 9 AM PDT THIS MORNING TO 2 PM PST
     SUNDAY PZZ450.

     SMALL CRAFT ADVISORY FROM 9 AM PDT THIS MORNING TO 8 PM PST
     SUNDAY PZZ470.

     SMALL CRAFT ADVISORY FROM 3 PM PDT THIS AFTERNOON TO 8 AM PST
     MONDAY PZZ455.

     SMALL CRAFT ADVISORY FROM 9 AM THIS MORNING TO 3 PM PDT THIS
     AFTERNOON PZZ475.

     GALE WARNING FROM 3 PM PDT THIS AFTERNOON TO 8 AM PST
     SUNDAY PZZ475.

&&

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HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EUREKA CA
428 PM PDT SAT NOV 2 2013

CAZ003-076-032330-
NORTH COAST INTERIOR-MENDOCINO INTERIOR-
428 PM PDT SAT NOV 2 2013

...FREEZE WATCH IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY
MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA.

.DAY ONE...TONIGHT.

FROST IS POSSIBLE LATE TONIGHT ALONG COLDEST INTERIOR VALLEY
LOCATIONS OF MENDOCINO...HUMBOLDT AND DEL NORTE COUNTIES.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

A FREEZE WATCH IS CURRENTLY IN EFFECT FOR SUNDAY NIGHT THROUGH
MONDAY MORNING. SUB-FREEZING TEMPERATURES ARE POSSIBLE FOR
INTERIOR VALLEY LOCATIONS OF MENDOCINO...HUMBOLDT AND DEL NORTE
COUNTIES.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

CAZ001-002-032330-
REDWOOD COAST-MENDOCINO COAST-
428 PM PDT SAT NOV 2 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA.

.DAY ONE...TONIGHT.

ISOLATED AREAS OF FROST ARE POSSIBLE TONIGHT ACROSS INTERIOR
COASTAL VALLEYS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

MORE WIDESPREAD FROST IS POSSIBLE SUNDAY NIGHT THROUGH MONDAY
MORNING ACROSS INTERIOR COASTAL VALLEYS AND COASTAL PLAIN.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

CAZ004-032330-
UPPER TRINITY RIVER-
428 PM PDT SAT NOV 2 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.