217
FXUS66 KEKA 082232
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
332 PM PDT MON JUN 8 2026
KEY MESSAGES
- RAIN WILL BE COMING TO AN END TONIGHT WITH DRY AND SLIGHTLY
BELOW NORMAL TEMPERATURES TUESDAY.
- TEMPERATURES ARE EXPECTED TO WARM UP QUICKLY MUCH WARMER
WEATHER NEXT WEEK INTO THE WEEKEND.
- ELEVATED FIRE WEATHER CONDITIONS IN LAKE COUNTY WITH LOW
AFTERNOON RELATIVE HUMIDITY AND GUSTY WINDS WEDNESDAY THROUGH
THURSDAY.
SYNOPSIS
A COLD FRONT IS BRINGING RAIN TO THE AREA THIS AND
THIS IS EXPECTED TO COME TO AN END TONIGHT. CLEARING SKIES ARE
TEMPERATURES BELOW SEASONAL NORMALS IS EXPECTED TUESDAY.
TEMPERATURES ARE EXPECTED WARM TO THE UPPER 90S TO AROUND 100 LATE
IN THE WEEK WITH A MODERATE HEAT RISK.
DISCUSSION
A COLD FRONT IS BRINGING SOME LIGHT TO MODERATE RAIN
TO THE AREA THIS AFTERNOON. THIS WILL BE COMING TO AN END THIS
EVENING. HIGH PRESSURE AND NORTHERLY WINDS START TO BUILD BACK
INTO THE AREA ON TUESDAY. THE LOW CLOUDS IN THE VALLEYS MAY TAKE
SOME TIME TO CLEAR OUT, ALTHOUGH MOST AREAS ARE EXPECTED TO SEE
CLEAR SKIES BY MIDDAY. HIGHS ARE EXPECTED TO WARM INTO THE 70S IN
MOST OF THE INLAND AREAS ALTHOUGH LAKE COUNTY MAY BE CLOSE TO 80.
TUESDAY NIGHT INTO WEDNESDAY MORNING IS EXPECTED TO BE A CHILLY
NIGHT WITH MOST AREAS FALLING INTO THE 40S. FROST IS POSSIBLE IN
THE COLDEST SPOTS IN TRINITY AND EASTERN HUMBOLDT COUNTIES,
SUCH AS RUTH, HAYFORK AND VALLEY.
THE HIGH PRESSURE STARTS TO BUILD IN ON WEDNESDAY WITH INLAND
HIGHS WARMING AROUND 10 DEGREES OVER THE PREVIOUS DAY YIELDING
HIGHS IN THE UPPER 80S TO LOW 90S. THURSDAY THE TEMPERATURES ARE
EXPECTED TO INCREASE BY ANOTHER 10 DEGREES OR SO WITH HIGHS
CLIMBING INTO THE UPPER 90S TO AROUND 100 IN MANY OF THE INLAND
VALLEYS. AT THE COAST OFFSHORE FLOW EACH NIGHT IS GENERALLY
EXPECTED TO KEEP COASTAL AREAS CLEAR WITH THE RIDGE AXIS TO THE
WEST OF THE COAST. BREEZY NORTH WINDS ARE EXPECTED EACH AFTERNOON
AND THIS WILL LIKELY KEEP COASTAL TEMPERATURES IN THE LOW 60S
THROUGH THURSDAY. FRIDAY MAY START TO BE A TRANSITION DAY WITH
SOME MARINE INFLUENCE RETURNING TO THE MENDOCINO COAST. ON THE
HUMBOLDT AND DEL NORTE COAST FRIDAY WILL BE A TRICKY DAY. WINDS
START TO WEAKEN. THIS MAY EITHER ALLOW TEMPERATURES TO WARM UP
INTO THE 70S OR STRATUS WILL FORM AND KEEP THEM AROUND 60. FARTHER
INLAND THE WARMING CONTINUES WITH HIGHS OVER 100 IN MANY VALLEYS
FRIDAY AND SATURDAY. MODERATE TO LOCALLY MAJOR HEAT RISK IS
EXPECTED TO START ON THURSDAY IN MOST INLAND AREAS AND CONTINUE
THROUGH SATURDAY. ONE OF THE BIG FACTORS WILL BE THE OVERNIGHT
LOWS. IN THE VALLEYS THE TEMPERATURES MAY END UP DROPPING SLIGHTLY
MORE THAN CURRENTLY EXPECTED AND THIS COULD DIMINISH THE OVERNIGHT
HEAT RISK. THE DETAILS REMAIN UNCERTAIN, ESPECIALLY IN THE
COASTAL COUNTIES, BUT THIS IS STARTING TO LOOK LIKE IT WILL BE
SOME OF THE HOTTEST WEATHER SO FAR THIS SUMMER. MKK
AVIATION
THE COLD FRONT IS CURRENTLY BRINGING SOME LOWER CIGS
AND VIS TO THE NORTHERN AREAS AS THE FRONT MOVES THROUGH.
CURRENTLY THIS IS BRINGING VARIABLE CONDITIONS WITH SOME AREAS AS
LOW AS LIFR. THESE ARE GENERALLY EXPECTED TO REMAIN LOW THROUGH
THE NIGHT AS THE FRONT FIZZLES OUT. TUESDAY NORTHERLY WINDS START
TO PICK UP AND WITH THE WEAKER INVERSION BEHIND THE FRONT SKIES
ARE EXPECTED TO CLEAR FAIRLY QUICKLY IN THE MORNING. FARTHER SOUTH
UKIAH MAY SEE SOME PERIODS OF LOW CLOUDS, ALTHOUGH CONFIDENCE IS
LOW ON LOW THEY WILL GET. THEY ARE ALSO EXPECTED TO CLEAR BY MID-
MORNING ON TUESDAY. MKK
MARINE
THE SOUTHERLY WINDS ARE EXPECTED TO DIMINISH LATER THIS
EVENING AND BECOME NORTHERLY AGAIN OVERNIGHT. WIND DRIVEN WAVES
ASSOCIATED WITH THESE SOUTHERLY WINDS HAVE BUILT TO 3 TO 6 FEET IN
THE NORTHERN WATERS AND WILL DIMINISH OVERNIGHT. EARLY TUESDAY
MORNING A FRESH NORTHWEST SWELL IS EXPECTED TO BUILD TO AROUND 7
OR 8 FEET AT 10 SECONDS.
TUESDAY AFTERNOON HIGH PRESSURE STARTS TO BUILD INTO THE WATERS
RANGING FROM 15 KT IN THE NORTH TO 25 KT IN THE SOUTH. SO HAVE
ADDED A SMALL CRAFT ADVISORY TO THE SOUTHERN WATERS TO HIGHLIGHT
THIS. THESE WINDS CONTINUE TO BUILD TUESDAY NIGHT AND WEDNESDAY
WITH GALES EXPECTED AT SOME POINT ON WEDNESDAY. SO HAVE ADDED A
GALE WATCH TO THE SOUTHERN WATERS WEDNESDAY AFTERNOON. AT SOME
POINT LATE WEDNESDAY AFTERNOON OR OVERNIGHT THE NORTHERN WATERS
WILL ALSO SEE NEAR GALES OR GALES AND A GALE WATCH MAY BE NEEDED.
THESE ARE EXPECTED TO REMAIN NEAR GALE OR GALES INTO THURSDAY AND
POSSIBLY INTO THURSDAY NIGHT. THURSDAY AFTERNOON THE GALES START
TO PUSH FARTHER OFF THE COAST AND THIS WILL DIMINISH THE WINDS IN
THE SOUTHERN WATERS. FRIDAY AND INTO THE WEEKEND THE GALES ARE
EXPECTED TO PUSH FARTHER OFFSHORE, ALTHOUGH CONFIDENCE IS LOW ON
HOW FAR OFF THE COAST THEY WILL GO. MKK
FIRE WEATHER
WETTING RAINS ARE EXPECTED TO COME IN TO AN END
TONIGHT IN DEL NORTE AND HUMBOLDT COUNTIES. DRY CONDITIONS WILL
THEN RETURN TUESDAY INTO WEDNESDAY WITH TEMPERATURES WARMING
CONSIDERABLY ACROSS THE INTERIOR. BY THURSDAY, HIGH TEMPERATURES
COULD BE EXCEEDING 100 DEGREES IN SOME INTERIOR VALLEY LOCATIONS.
THIS IS EXPECTED TO DROP AFTERNOON RH INTO THE MID TO UPPER TEENS
WEDNESDAY AND LOW TO MID TEENS THURSDAY ACROSS LAKE COUNTY,
EASTERN MENDOCINO AND TRINITY COUNTIES. WEDNESDAY NIGHT INTO
THURSDAY MORNING RH RECOVERIES ARE ONLY EXPECTED TO BE AROUND 20
TO 40 PERCENT IN EASTERN AND SOUTHERN LAKE COUNTY AS WELL AS FAR
EASTERN MENDOCINO COUNTY. WEDNESDAY NIGHT NORTHERLY WINDS ARE
EXPECTED TO PICK UP OVER THE HIGHER TERRAIN OF SOUTHERN AND
EASTERN LAKE COUNTY AS WELL UP INTO THE YOLLA BOLLA MOUNTAINS OF
NE MENDOCINO AND SE TRINITY COUNTIES. SUSTAINED WINDS OF 15 TO 30
MPH WITH GUSTS TO 40 MPH IN SOME AREAS. THE STRONGEST WINDS ARE
EXPECTED TO BEGIN VERY EARLY THURSDAY MORNING AND START TO TAPER
OFF BY MID TO LATE MORNING. IN GENERAL THIS LOOKS ON THE LOW END
OF THE RED FLAG CRITERIA AND THERE IS STILL SOME UNCERTAINTY ON
THE FUEL MOISTURE SO WILL CONTINUE TO HOLD OFF ON THE FIRE WEATHER
WATCH.
EKA WATCHES/WARNINGS/ADVISORIES
CA...
NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...
SMALL CRAFT ADVISORY UNTIL 9 PM PDT THIS EVENING FOR PZZ450.
SMALL CRAFT ADVISORY UNTIL 7 PM PDT THIS EVENING FOR PZZ470.
SMALL CRAFT ADVISORY FROM 3 PM TUESDAY THROUGH 2 PM PDT
WEDNESDAY.
A GALE WATCH FROM 3PM WEDNESDAY THROUGH 3 AM THURSDAY..
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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