619
FXUS66 KEKA 042321
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
321 PM PST WED MAR 4 2026
SYNOPSIS
RAIN SHOWERS WILL WIND DOWN THIS EVENING. GRADUALLY
WARMER AND MORE SUMMER LIKE CONDITIONS WILL BUILD IN LATE WEEK INTO
THE WEEKEND.
DISCUSSION
LIGHT TO BRIEFLY MODERATE SCATTERED
SHOWERS HAVE CROSSED THE AREA THROUGH THE DAY TODAY. SO FAR, NO
LIGHTNING HAS BEEN OBSERVED AND RAINFALL AMOUNTS HAVE GENERALLY
STAYED BETWEEN 0.1 AND 0.3 INCHES ACROSS THE AREA WITH ISOLATED
HIGHER AMOUNTS IN DEL NORTE COUNTY. LITTLE MORE THAN DRIZZLE HAS
BEEN OBSERVED ON THE SOUTHERN HALF OF THE AREA. DRIER AIR AND
CLEARER SKY TONIGHT MAY ALLOW FOR SOME FROST FORMATION IN INTERIOR
VALLEYS, THOUGH DEWPOINTS NEAR 40 WILL LIMIT FROST COVERAGE.
A LOBE OF HIGH PRESSURE WILL GRADUALLY BUILD OVER THE AREA THROUGH
THE END OF THE WEEK. THIS WILL BRINGING GENERALLY CLEAR SKIES AND
STEADILY WARMING CONDITIONS, ESPECIALLY FOR THE INTERIOR. HIGHS WILL
LIKELY CREST NEAR THEIR HIGHEST OF THE SPRING SO FAR. MOST INTERIOR
VALLEYS WILL SEE HIGHS IN THE MID 70S WITH A 15% CHANCE OF SOME
HIGHS OVER 80 IN LAKE AND SOUTHERN MENDOCINO COUNTIES.
FOR THE COAST, CONDITIONS WILL DRY THROUGH THE WEEK. HIGH PRESSURE
WILL ENCOURAGE A WEAK MARINE LAYER TO FORM EACH NIGHT, BUT
INCREASINGLY STRONG NORTH WINDS DURING THE DAY WILL ENCOURAGE QUICK
CLEARING EACH AFTERNOON. GUSTY NORTH WINDS PUSHING CLOSE TO SHORE
WILL MOST LIKELY BRING SOME GUSTS CLOSE TO 20 KTS EACH AFTERNOON
NEAR SHORE AND LOCALLY HIGHER GUSTS ON RIDGES. THERE IS HIGH
CONFIDENCE THAT SLIGHTLY COOLER TEMPERATURES WILL RETURN BY EARLY
NEXT WEEK AS HIGH PRESSURE WEAKENS, BUT THERE IS LITTLE CHANCE OF
WETTING RAIN UNTIL LATE NEXT WEEK AT LEAST WHEN ABOUT 20% OF
ENSEMBLE MODELS SHOW A WEAK TROUGH CROSSING THE AREA. /JHW
AVIATION
GENERALLY VFR CONDITIONS ARE EXPECTED
TODAY, WITH THE OCCASIONAL DROP TO MVFR WITH A PASSING RAIN SHOWER.
SHOWERS WILL TAPER OFF OVERNIGHT AND BRING MORE CONSISTENT VFR
CONDITIONS. GUSTY NORTHERLY WINDS ARE FORECAST AT ALL TERMINALS THIS
AFTERNOON, BUT WINDS WILL EASE OVERNIGHT. OFFSHORE WINDS OVERNIGHT
ARE EXPECTED TO KEEP WIDESPREAD STRATUS FROM FORMING, OUTSIDE SOME
OF THE FOG PRONE RIVER VALLEYS. PATCHY GROUND FOG COULD BRING BRIEF
IMPACTS TO THE TERMINALS OVERNIGHT. JB
MARINE
WINDS HAVE TURNED NORTHERLY AND HAVE STARTED TO INCREASE
AS HIGH PRESSURE BEGINS TO BUILD IN. WIDESPREAD WIND GUSTS OF 20 TO
30 KTS ARE LIKELY BY THIS EVENING AND INTO THURSDAY. WINDS CONTINUE
TO INCREASE TO GALE FORCE BY THURSDAY MORNING SOUTH OF CAPE
MENDOCINO AND BY THURSDAY AFTERNOON NORTH OF CAPE MENDOCINO.
GENERALLY, WINDS NEARSHORE WILL EASE SOMEWHAT OVERNIGHT, LIKELY
BELOW GALES, BUT COULD STRENGTHEN TO GALE FORCE GUSTS AGAIN IN THE
AFTERNOONS. ON SATURDAY THE STRONGEST WINDS MOVE FARTHER FROM SHORE,
WITH GALES REMAINING LIKELY IN THE OUTER WATERS BUT WITH MUCH
LIGHTER WINDS EXPECTED IN THE INNER WATERS. GALE FORCE WINDS MAY
CONTINUE IN THE OUTER WATERS THROUGH MID NEXT WEEK.
SEAS HAVE ALSO STARTED TO BUILD AS WINDS START TO INCREASE. WIND
WAVES ALONG WITH A MID-PERIOD NORTHWEST SWELL ARRIVING TONIGHT WILL
BRING COMBINED SEAS OF 10 TO 13 FT BY THURSDAY. SEAS WILL GENERALLY
REMAIN ELEVATED THROUGH FRIDAY, BUT COULD DROP BELOW 6 FT IN THE
NEARSHORE WATERS THIS WEEKEND. JB
EKA WATCHES/WARNINGS/ADVISORIES
CA...
FROST ADVISORY FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY
FOR CAZ110-111-114.
NORTHWEST CALIFORNIA COASTAL WATERS...
SMALL CRAFT ADVISORY UNTIL NOON PST THURSDAY FOR PZZ450-470.
GALE WARNING FROM NOON THURSDAY TO 3 AM PST FRIDAY FOR
PZZ450.
SMALL CRAFT ADVISORY UNTIL 7 AM PST THURSDAY FOR PZZ455-475.
GALE WARNING FROM 7 AM THURSDAY TO 10 PM PST FRIDAY FOR
PZZ455.
GALE WARNING FROM NOON THURSDAY TO 3 AM PST SATURDAY FOR
PZZ470.
GALE WARNING FROM 7 AM THURSDAY TO 10 AM PST SATURDAY FOR
PZZ475.
NOTE: THE FULL FORECAST DISCUSSION IS NOW REGULARLY ISSUED BETWEEN
10 AM/PM AND 1 PM/AM. ADDITIONAL UPDATES WILL BE ISSUED AS NEEDED.
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