626
FXUS66 KEKA 100821
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
1221 AM PST SAT JAN 10 2026
SYNOPSIS
COOL CONDITIONS WILL STEADILY WARM THROUGH MID NEXT
WEEK. CONDITIONS WILL REMAIN UNSEASONABLY DRY, CLEAR, AND CALM
THROUGH NEXT WEEK.
DISCUSSION
HIGH PRESSURE CONTINUES TO BUILD INTO NORTHWEST
CALIFORNIA. GENTLE WINDS TURNING MORE SOUTHERLY WILL HELP
INCREASE COASTAL MOISTURE AND GENERALLY INCREASE MORNING
TEMPERATURES FOR THE WEEKEND. THAT SAID, MANY LOCATIONS WILL
STILL SEE TEMPERATURES NEAR FREEZING, ESPECIALLY FOR INLAND
VALLEYS.
WEAK UPPER LEVEL RIDGING WILL SLOWLY BUILD INTO THE REGION THIS
WEEKEND AND INTO EARLY NEXT WEEK. GRADUAL WARMING WILL BUILD INTO
MID NEXT WEEK. A VERY WEAK UPPER LEVEL WAVE AROUND SUNDAY COULD
PRODUCE MIDLEVEL CLOUDS AND VERY LIGHT COASTAL DRIZZLE, BUT
OTHERWISE SKIES WILL BE MOSTLY CLEAR. SOUTHEAST WINDS WILL MOST
LIKELY INHIBIT ANY STRONG MARINE LAYER FORMATION. ABOVE AVERAGE
TEMPERATURES ARE FORECAST BY TUESDAY WITH SOME DAYTIME INTERIOR
HIGHS IN THE LOW 70S BY EARLY NEXT WEEK. THOUGH NOT HIGH IN
ABSOLUTE TERMS, THIS MAY APPROACH SOME HIGH TEMPERATURE RECORDS
SUCH AS AROUND UKIAH BY MID WEEK. IN CONTRAST TO THE LAST COUPLE
OF WEEKS, THERE IS VERY LITTLE CHANCE OF RAIN WITH LESS THAN 10%
OF ENSEMBLE MEMBERS INDICATING ANY CHANCE FOR WETTING RAIN EVEN
ALONG THE COAST BY NEXT WEEKEND. /JHW
AVIATION...(06Z TAFS)
VFR CONDITIONS AND LIGHT WINDS ARE FORECAST
ACROSS THE AREA TONIGHT AND SATURDAY. INTERIOR VALLEYS, PARTICULARLY
IN TRINITY, HUMBOLDT AND NORTHERN MENDOCINO WILL LIKELY HAVE SOME
FOG AND IFR CEILINGS DURING THE MORNING HOURS. EARLY MORNING
TEMPERATURES OF 32F OR LESS AND FOG (FZFG) MAY ALSO OCCUR AT THE
SAME TIME. PROBABILITY FOR FOG AT FORECAST TERMINALS IS QUITE LOW
(<10%) DUE TO VERY LOW DEWPOINTS. ANY FOG THAT OCCURS AT FORECAST
AERODROMES WILL LIKELY BE SHALLOW, SHORT IN DURATION AND NOT
IMPACTFUL.
MARINE
SEAS WERE DOWN TO 8-9 FT AT 13-14 SECONDS FRIDAY
EVENING AS WINDS EASE AND BECOME SOUTHERLY UNDER 10 KT. PRIMARY
WESTERLY SWELL COMPONENT WILL CONTINUE TO SUBSIDE THROUGH SATURDAY
WHILE SOUTHERLIES INCREASE TO ABOUT 15-20KT MOSTLY AROUND CAPE
MENDOCINO AND NORTHWARD. A MID-PERIOD WESTERLY SWELL WILL FILL IN
SATURDAY AND SEAS ARE FORECAST TO REBUILD WITH COMBINED SEAS UP TO 7
TO 9 FT AND NOT STEEP ENOUGH TO WARRANT AN ADVISORY. A LONGER
PERIOD WESTERLY SWELL BUILDS ON SUNDAY, EVENTUALLY PEAKING TO AROUND
12 FT AT 17 SECONDS LATE SUNDAY NIGHT AND MONDAY. AB ADVISORY FOR
HAZARDOUS SEAS IS EXPECTED. WINDS TURN NORTHERLY EARLY NEXT WEEK AND
THEN STEADILY INCREASE INTO MID WEEK. ADVISORY LEVEL GUSTS > 25KT
ARE MOST PROBABLE WHILE GALE GUSTS ARE LESS CERTAIN.
BEACH HAZARDS
ON SUNDAY, ANOTHER LONG PERIOD WESTERLY SWELL
ORIGINATING FROM A LOW NEAR THE ALEUTIANS BUILDS TO AROUND 7 FT AT
20 SECONDS AND THEN TO AROUND 12 FT AT 17 SECONDS. A BEACH HAZARD
STATEMENT HAS BEEN ISSUED FOR THIS MODERATE SNEAKER WAVE THREAT LATE
SUNDAY MORNING THROUGH MONDAY AFTERNOON. STAY MUCH FARTHER BACK FROM
THE OCEAN AND AVOID STEEP BEACHES AND JETTIES. REMEMBER, NEVER TURN
YOUR BACK ON THE OCEAN!
EKA WATCHES/WARNINGS/ADVISORIES
CA...
BEACH HAZARDS STATEMENT FROM SUNDAY MORNING THROUGH MONDAY
AFTERNOON FOR CAZ101-103-104-109.
NORTHWEST CALIFORNIA COASTAL WATERS...
NONE.
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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