896
FXUS66 KEKA 031911
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
1211 PM PDT FRI APR 3 2026
SYNOPSIS
MUCH WARMER AND DRIER THAN NORMAL CONDITIONS WILL BUILD
TODAY AND THROUGH THE WEEKEND. COOLER CONDITIONS RETURN NEXT WEEK
WITH CHANCE FOR WETTING RAIN MID WEEK.
KEY MESSAGES
-CHANCE FOR FROST IN NORTHEAST MENDOCINO AND NORTHERN LAKE
TONIGHT.
-INTERIOR HIGHS IN THE LOW 80S THIS WEEKEND.
-SLIGHT CHANCE OF WETTING RAIN AND THUNDERSTORMS MID NEXT WEEK.
DISCUSSION
HIGH PRESSURE HAS STARTED TO BUILD OVER THE AREA,
BRINGING CLEAR SKIES AND DRY WEATHER. TEMPERATURES WILL REBOUND
TODAY WITH MANY INTERIOR VALLEYS IN THE 70S. OVERNIGHT LOW
TEMPERATURES WILL BE SLIGHTLY WARMER THAN LAST NIGHT'S, WITH
GENERALLY 30S TO LOW 40S LIKELY FOR MUCH OF THE AREA. FROST
POTENTIAL HAS WANED SLIGHTLY WITH THIS WARMUP, BUT SOME AREAS IN
NORTHEASTERN MENDOCINO AND NORTHERN LAKE (THE PILLSBURY LAKE AREA,
POTTER VALLEY, & COVELO) COULD STILL SEE FROST TONIGHT WITH
TEMPERATURES DIPPING INTO THE LOW TO MID 30S. A FROST ADVISORY HAS
BEEN ISSUED FOR NORTHEAST MENDOCINO AND NORTHERN LAKE FOR THIS FROST
POTENTIAL.
THE WARMING TREND CONTINUES THIS WEEKEND WITH 80S LIKELY FOR MANY
INTERIOR VALLEYS. A SHALLOW MARINE LAYER ON THE COAST WILL SUPPORT
COASTAL TEMPERATURES APPROACHING OR EXCEEDING 70 IN SOME AREAS,
ESPECIALLY A COUPLE MILES INLAND.
HIGH PRESSURE WEAKENS GOING INTO EARLY NEXT WEEK AS A TROUGH DIGS
INTO THE PACIFIC NORTHWEST AND A CUTOFF LOW APPROACHES THE AREA.
CURRENTLY, ANY POTENTIAL RAINFALL LOOKS LIGHT, WITH ONLY AROUND A
60% CHANCE OF WETTING RAIN (OVER 0.1") OVER A 72-HOUR TIME SPAN.
CHANCES FOR OVER AN INCH OF RAIN ARE AROUND 10-20% IN THE MOUNTAINS.
TIMING AND MAGNITUDE OF PRECIPITATION WILL BE HIGHLY DEPENDENT ON
THE POSITION OF THIS CUTOFF LOW. INTERIOR THUNDERSTORMS MAY BE
POSSIBLE DEPENDING ON THE POSITION OF THE LOW, WITH NBM SHOWING
AROUND 10-20% CHANCES TUESDAY TO THURSDAY NEXT WEEK. JB
AVIATION...18Z TAFS
VFR CONDITIONS PREVAIL WITH BUILDING HIGH
PRESSURE AND A RELATIVELY DRY AIRMASS. A SLIGHT INCREASE IN SURFACE
MOISTURE IS NOTED ON THE SOUNDING FOR EARLY SATURDAY MORNING. SOME
SHALLOW GROUND AND INLAND VALLEY FOG WAS OBSERVED FRIDAY MORNING, SO
THERE IS A SLIGHT CHANCE (LESS THAN 30%) FOR ISOLATED STRATUS OR
PATCHY GROUND FOG AROUND HUMBOLDT BAY SATURDAY MORNING. NORTHERLY
WINDS WILL BRING SOME AFTERNOON GUSTS BEFORE EASING AND TURNING
LIGHT OFFSHORE OVERNIGHT.
MARINE
A WESTERLY SWELL CONTINUES TO SUBSIDE WHILE NORTHERLY
WINDS STRENGTHEN. SOME LOCALIZED GALE STRENGTH GUSTS OF 34 KTS ARE
LIKELY WITH AN EXPANSION FAN AROUND AND SOUTH OF CAPE MENDOCINO AND
IN THE FAR NORTHER WATERS NEAR THE OREGON BORDER. THE NORTHERLY
WINDS WILL QUICKLY SUBSIDE SATURDAY AS A STRONG RIDGE OF HIGH
PRESSURE CENTERS OVER THE N CA WATERS. SEAS ARE FORECAST TO DROP
BELOW 10 FT LATE FRIDAY, AND THE LINGERING SHORT PERIOD SEAS WILL
QUICKLY FADE GOING INTO SATURDAY MORNING. WINDS AND SEAS WILL BE LOW
THROUGH THE WEEKEND AND INTO NEXT WEEK. THE NORTHERLIES WILL BEGIN
TRENDING HIGHER TUESDAY. GALE STRENGTH NORTHERLIES WILL BE POSSIBLE
BY WEDNESDAY.
EKA WATCHES/WARNINGS/ADVISORIES
CA...
FROST ADVISORY FROM 1 AM TO 9 AM PDT SATURDAY FOR CAZ110-
111-114.
NORTHWEST CALIFORNIA COASTAL WATERS...
SMALL CRAFT ADVISORY UNTIL 6 AM PDT SATURDAY FOR PZZ450-455.
SMALL CRAFT ADVISORY UNTIL 11 AM PDT SATURDAY FOR PZZ470-
475.
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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