794
FXUS66 KEKA 080905
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
105 AM PST THU JAN 8 2026
SYNOPSIS
SHOWERS WILL CONTINUALLY DIMINISH THROUGH THURSDAY
WITH LIGHT SNOW AS LOW AS 1000 TO 2000 FEET FOR INTERIOR AREAS EARLY
THURSDAY MORNING. COOLER THAN NORMAL CONDITIONS WILL CONTINUE
INTO FRIDAY, BUT SLOWLY WARM AND DRY THIS WEEKEND.
DISCUSSION
SHOWERS ASSOCIATED WITH A PASSING COLD FRONT WILL
CONTINUE TO DIMINISH THROUGH THURSDAY AFTERNOON. ALONG THE COAST,
0.3 TO 0.6 INCHES OF RAIN FELL WEDNESDAY NIGHT INTO EARLY THURSDAY
WITH LOCALLY HIGHER AMOUNTS IN THE MOUNTAINS (ESPECIALLY IN DEL
NORTE). LOWER AMOUNTS ARE EXPECTED FOR THE SOUTHERN HALF OF THE
AREA AS THE SHOWERS DIMINISH THURSDAY.
SNOW LEVELS CONTINUE TO DROP IN THE NORTHERN HALF OF THE AREA WITH
SOME AREAS DROPPING AS LOW AS 1000 TO 1500 FT BY EARLY THURSDAY
MORNING. THAT SAID, THE SHORT LIVED NATURE OF THE SYSTEM WILL
GREATLY LIMIT SNOW ACCUMULATION. THERE IS GENERALLY LESS THAN A
20% CHANCE OF SEEING EVEN 3 INCHES OF WET SNOW ON SOME AREAS
PASSES SUCH AS BERRY SUMMIT AND COLLIER TUNNEL, THOUGH AREAS IN
THE HIGH MOUNTAINS COULD CERTAINLY SEE MORE. SOME MODERATE GUSTY
NORTHWEST WINDS UP TO ABOUT 35 MPH WILL CONTINUE INTO THURSDAY
AFTERNOON, ESPECIALLY IN LAKE COUNTY.
COLD AIR CONTINUES TO QUICKLY BUILD BEHIND THE SYSTEM. AREAS
CLOSER TO THE COAST WILL INITIALLY STAY WARMER DUE TO CLOUDS AND
RECENT RAIN, THOUGH WINDCHILLS NEAR 30 ARE STILL NOT OUT OF THE
QUESTION AROUND HUMBOLDT BAY. WITH LOWS IN THE LOW 30S AND
MODERATE WIND OVERNIGHT, WINDCHILL WILL MOST LIKELY DROP INTO THE
MID 20S FOR MANY INTERIOR LOCATIONS EARLY THURSDAY, PARTICULARLY
IN LAKE AND SOUTHERN MENDOCINO, PROMPTING AN OVERNIGHT COLD
WEATHER ADVISORY FOR THE AREA. WIND WILL DIMINISH THURSDAY INTO
FRIDAY. DRIER AND MORE CLEAR CONDITIONS WILL PROMPT COLDER
TEMPERATURES, ESPECIALLY ALONG THE COAST, WITH A 70 TO 80% CHANCE
OF LOWS AS LOW AS 30 AROUND HUMBOLDT BAY FRIDAY MORNING.
OTHERWISE, WEAK RIDGING WILL SLOWLY BUILD INTO THE REGION THIS
WEEKEND AND INTO EARLY NEXT WEEK. GRADUAL WARMING WILL OCCUR BY
LATE THIS WEEKEND AND BUILD INTO MID NEXT WEEK. ABOVE AVERAGE
TEMPERATURES ARE FORECAST BY TUESDAY WITH SOME DAYTIME INTERIOR
HIGHS IN THE LOW 70S BY EARLY NEXT WEEK. IN CONTRAST TO THE LAST
COUPLE OF WEEKS, THERE IS VERY LITTLE CHANCE OF RAIN WITH ONLY
10% OF ENSEMBLE MEMBERS INDICATING ANY CHANCE FOR WETTING RAIN
DURING THE WEEK. /JHW
AVIATION
IN THE WAKE OF A STORM, POST FRONTAL SHOWERS WILL
CONTINUE OVERNIGHT. GUSTY WINDS ARE EXPECTED NEAR THESE RAINSHOWERS.
OFFSHORE FLOW WILL DEVELOP ALONG THE NORTH COAST, ALLOWING FOR
CLEARING AND VFR CONDITIONS THROUGH DAWN. IN THE MORNING, COASTAL
NORTHERLIES WILL DEVELOP WITH GUSTS UP TO 20KTS POSSIBLE FOR EXPOSED
TERMINALS. SKIES ARE EXPECTED TO REMAIN VFR WITH PERIODS OF MVFR
THROUGH THE NIGHT BEFORE CLEARING THROUGH THE REMAINDER OF THE TAF
PERIOD. INLAND AREAS WILL EXPERIENCE LLT THROUGH THE NIGHT BEFORE
CLEARING. WINDS WILL REMAIN ELEVATED INLAND WITH GUSTS POSSIBLE OUT
OF THE NW.
MARINE
NW WINDS OF 15-25 KTS THIS MORNING REMAIN AROUND 20-30
KTS THROUGH THE NIGHT AND MORNING. A LARGE LONG PERIOD SWELL IS
FILLING IN. THIS SWELL WILL BUILD TO AROUND 18 TO 22 FT AT 17
SECONDS BY THURSDAY MORNING. HAZARDOUS SEAS WARNINGS ARE IN EFFECT
THROUGH THURSDAY AFTERNOON DUE TO LARGE WAVES FROM THIS SWELL.
THE WINDS AND SEAS ARE EXPECTED TO DIMINISH FRIDAY, BUT THE SWELL
MAY REMAIN ABOVE 10 FEET UNTIL FRIDAY NIGHT. SATURDAY, THE MODELS
ARE SHOWING A WEAK WEATHER SYSTEM BRINGING SOME SOUTHERLY WINDS TO
THE AREA, BUT WINDS ARE CURRENTLY FORECAST TO REMAIN BELOW 20 KTS.
SUNDAY AND INTO MONDAY, HIGH PRESSURE IS EXPECTED TO BRING A RETURN
OF NORTHERLY WINDS.
BEACH HAZARDS
A LONG PERIOD NORTHWEST SWELL HAS STARTED TO FILL
INTO THE WATERS, AND PERIODS OF AROUND 22 SECONDS ARE BEING
OBSERVED. THIS SWELL IS FORECAST TO CONTINUE BUILDING OVERNIGHT TO
AROUND 18 TO 22 FT AT 17 SECONDS, WHICH WILL PRODUCE BREAKING WAVES
OF 22 TO 25 FEET. A HIGH SURF ADVISORY UNTIL 4 PM THURSDAY FOR THIS
THREAT OF LARGE, POWERFUL SURF. 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...
HIGH SURF ADVISORY UNTIL 4 PM PST THURSDAY FOR CAZ101-103-
104-109.
COLD WEATHER ADVISORY UNTIL 8 AM PST THURSDAY FOR CAZ113-
115.
NORTHWEST CALIFORNIA COASTAL WATERS...
HAZARDOUS SEAS WARNING UNTIL 3 PM PST THURSDAY FOR PZZ450-
455-470-475.
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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