330
FXUS66 KEKA 030701
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
1201 AM PDT WED JUN 3 2026
SYNOPSIS
TEMPERATURES WILL COOL GRADUALLY STARTING ON
WEDNESDAY AND INTO THE WEEKEND. A WEAK COLD FRONT WILL PROMOTE A
DEEPENING MARINE LAYER AND COASTAL DRIZZLE. ENHANCED WEST TO
NORTHWEST WINDS THROUGH THE CHANNELED TERRAIN AND HIGHER TERRAIN
ON WEDNESDAY, SHIFTING TO THE COAST THURSDAY AFTERNOON. ADDITIONAL
BREEZY TO GUSTY WINDS POSSIBLE FRIDAY AND INTO THE WEEKEND.
KEY MESSAGES
- GRADUAL COOLING TREND AND DEEPENING MARINE LAYER THIS WEEK AND
CONTINUING INTO THE WEEKEND.
- ENHANCED WEST-NORTHWEST WINDS THROUGH THE CHANNELED TERRAIN AND
HIGHER RIDGES ON WEDNESDAY, THEN SHIFTING TO THE COAST ON THURSDAY.
- ANOTHER WEAK COLD FRONT HAS THE POTENTIAL TO BRING BREEZY TO GUSTY
WINDS FRIDAY AND INTO THE WEEKEND.
DISCUSSION
A GRADUAL COOLING TREND WILL START ON WEDNESDAY AS A
COLD FRONT MOVES THROUGH. ENHANCED WEST-NORTHWEST WINDS ARE EXPECTED
ALONG THE CHANNELED TERRAIN AND EXPOSED RIDGES IN THE WAKE OF A
PASSING WEAK FRONT.
GUSTS FROM 25 TO 35 MPH ARE MOST LIKELY, WITH LOCALLY UP TO AROUND
40 MPH POSSIBLE. MENDOCINO AND LAKE COUNTIES WILL SEE BETTER
COVERAGE OF STRONGER WINDS, WHERE THERE IS A HIGH PROBABILITY (60 TO
80%) FOR GUSTS OVER 30 MPH WEDNESDAY AFTERNOON AND EVENING. THE
COMBINATION OF DRY WEATHER, WARM TEMPERATURES, AND GUSTY WINDS WILL
BRING A LOCALLY ELEVATED FIRE WEATHER THREAT FOR PORTIONS OF LAKE
COUNTY (SEE FIRE WEATHER SECTION). OTHER THAN MORE COASTAL LOW
CLOUDS, BOUTS OF PATCHY DRIZZLE WILL ALSO BE POSSIBLE WEDNESDAY
NIGHT.
THURSDAY, A SURFACE HIGH PRESSURE WILL BUILD IN. THIS WILL AID IN
REBOUNDING DAYTIME TEMPERATURES ACROSS THE AREA ON THURSDAY. IN
ADDITION, BREEZY NORTH- NORTHWEST GUSTS OF 25 TO 35 MPH IS EXPECTED
OVER THE COASTAL AND EXPOSED RIDGES. LOCALLY STRONGEST WINDS ARE
POSSIBLE OVER THE EXPOSED RIDGES IN THE KING RANGE. EXPECT LOW
CLOUDS MIXING AND CLEARING OUT THURSDAY AFTERNOON, ALLOWING A MOSTLY
SUNNY DAY, WITH MORE STRATUS REDEVELOPING OVERNIGHT AROUND HUMBOLDT
BAY AND VICINITY.
A STRONGER UPPER-LEVEL TROUGH WILL DRIVE SOUTHWARD FRIDAY AND
THROUGH THE WEEKEND, PROMOTING SEASONAL TEMPERATURES. ADDITIONAL
BREEZY TO GUSTY WINDS ARE ALSO EXPECTED WITH THE PRESSURE GRADIENT
TIGHTENING ACROSS THE AREA. DRY WEATHER IS EXPECTED TO REMAIN UNDER
PREVAILING DRY WEATHER THROUGH THIS WEEKEND. /ZVS
AVIATION
LIFR CONDITIONS WERE UNDERWAY EARLY TUESDAY MORNING,
ALONG WITH SOME FOG. A WEAK FRONT IS PASSING AND WILL PRESENT
OPPORTUNITY FOR LIGHT DRIZZLE. THE FRONT AND APPROACHING TROUGH
WILL DEEPEN THE MARINE LAYER TO TREND CEILINGS HIGHER AND GIVE
BETTER OPPORTUNITY FOR MVFR TO PERHAPS VFR LEVELS THROUGH THE
AFTERNOON IF SCATTERING IS FULLY ACHIEVED. NORTHERLY WINDS WILL
INCREASE THROUGH THE AFTERNOON BEHIND THE FRONT, AND GUSTS OF 20
TO 25 KTS ARE FORECAST FOR THE TERMINALS BEFORE WINDS EASE INTO
THE EVENING.
MARINE
AFTER A BRIEF LULL, NORTHERLY WINDS WILL QUICKLY INCREASE
ACROSS THE WATERS WEDNESDAY BEHIND A FRONT. ADVISORY LEVEL WIND
GUSTS OF 20-30KTS WILL OCCUR THROUGH THE AFTERNOON. THE SOUTHERN
WATERS WILL SEE FURTHER STRENGTHENING OVERNIGHT. THE GALE WATCH HAS
BEEN UPGRADED TO GALE WARNING FOR THE SOUTHERN OUTER ZONE (475). A
GALE WATCH HAS ALSO BEEN HOISTED FOR THE SOUTHERN INNER ZONE (455)
FOR THURSDAY WHEN STRONGER WINDS ARE EXPECTED TO WORK CLOSER TO THE
COAST. THE SEAS STATE WILL TURN STEEP FROM SHORT PERIOD SEAS, AND
THIS WILL BE THE DOMINANT WAVE GROUP OTHER THAN A SMALL LONG PERIOD
SOUTHERLY SWELL.
FIRE WEATHER
ENHANCED WEST- NORTHWEST WINDS ARE EXPECTED ALONG
THE CHANNELED TERRAIN AND EXPOSED RIDGES ON WEDNESDAY, WITH GUSTS
OF 20 TO 35 MPH LIKELY. LOCALLY HIGHER GUSTS ARE POSSIBLE SOUTH
IN LAKE COUNTY. ONSHORE MARINE MOISTURE WILL CONTINUE TO PROMOTE
MODERATE TO GOOD RH RECOVERIES FOR AREAS BELOW THE INVERSION
(<2000 FEET). DAYTIME RH RECOVERIES WILL BE GENERALLY IN THE UPPER
20S AND 30S PERCENT ON WEDNESDAY, WITH A SLIGHT LOWER PERCENT
EACH DAY THROUGH FRIDAY. LOCALLY ELEVATED FIRE WEATHER CONDITIONS
ARE EXPECTED ON ZONES 419 AND 421 ON WEDNESDAY DUE TO LOW DAYTIME
RH COMBINE WITH LOCALLY GUSTY WINDS OVER THE RIDGES. A DEEPER
TROUGH WILL LIKELY BRING STRONGER WINDS FRIDAY AND INTO THE
WEEKEND. /ZVS
EKA WATCHES/WARNINGS/ADVISORIES
CA...
NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...
SMALL CRAFT ADVISORY FROM 5 PM WEDNESDAY TO NOON PDT
THURSDAY FOR PZZ455.
GALE WATCH FROM THURSDAY AFTERNOON THROUGH LATE THURSDAY
NIGHT FOR PZZ455.
SMALL CRAFT ADVISORY FROM 11 PM WEDNESDAY TO 6 AM PDT
FRIDAY FOR PZZ470.
SMALL CRAFT ADVISORY FROM 5 PM WEDNESDAY TO 2 AM PDT
THURSDAY FOR PZZ475.
GALE WARNING FROM 2 AM THURSDAY TO 6 AM PDT FRIDAY 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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