906
FXUS66 KSEW 120324
AFDSEW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
824 PM PDT WED JUN 11 2025
UPDATE
INCREASED ONSHORE WILL LEAD TO WIDESPREAD MARINE STRATUS
DEVELOPING OVERNIGHT INTO THURSDAY MORNING. MINIMUM TEMPERATURES
ARE TO RANGE BETWEEN THE MID 40S TO LOWER 50S. THE PREVIOUS
DISCUSSION IS BELOW ALONG WITH AN UPDATED MARINE/AVIATION SECTION.
SYNOPSIS
AFTER SEVERAL WARM DAYS, MORE SEASONABLE WEATHER IS
EXPECTED OVER THE NEXT WEEK. TEMPERATURES WILL REMAIN IN THE 60S
AND 70S ACROSS MOST OF THE REGION. OUTSIDE OF SOME LIGHT DRIZZLE
ALONG THE COASTAL AREAS, THE NEXT NOTEWORTHY CHANCE FOR
PRECIPITATION WILL ARRIVE MONDAY OR TUESDAY NEXT WEEK.
SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/
MARINE STRATUS
BURNED OFF MID-DAY, BUT MID AND HIGH LEVEL CLOUDS HAVE SPREAD
ACROSS THE REGION BLUNTING DAYTIME HEATING TODAY. THE FORECAST
WAS UPDATED EARLIER TO LOWER HIGHS TODAY AND MANY AREAS WILL
STRUGGLE TO REACH 70.
LOOKING FORWARD, GENERAL TOUGHING OVER THE REGION WILL KEEP FLOW
ONSHORE THURSDAY AND FRIDAY. MOISTURE IS LIMITED SO SOME COASTAL
DRIZZLE IS POSSIBLE, BUT OTHERWISE PRECIPITATION CHANCES WILL
REMAIN FAIRLY LOW. TEMPERATURES WILL REMAIN SIMILAR TO TODAY'S
LEVELS.
LONG TERM /SATURDAY THROUGH WEDNESDAY/
STRENGTHENING HIGH
PRESSURE WILL ALLOW TEMPERATURES TO WARM SLIGHTLY OVER THE
WEEKEND, WHILE STILL REMAINING COMFORTABLE AND DRY.
HIGH PRESSURE WEAKENS BY MONDAY & TUESDAY, AND TOUGHING ONCE
AGAIN BEGINS TO DOMINATE. THIS PERIOD MAY SEE SLIGHTLY BETTER
CHANCES FOR PRECIPITATION ACROSS THE REGION, THOUGH ANY AMOUNTS
STILL APPEAR LIGHT. THE MAIN THREAT WOULD BE SLICK ROAD
CONDITIONS THANKS TO AN EXTENDED DRY PERIOD ALLOWING OILS TO
BUILD UP. OTHERWISE THERE IS LITTLE TO NO INDICATION OF ANY
SIGNIFICANT HAZARDS OVER THE NEXT WEEK.
-WOLCOTT-
AVIATION
ONSHORE LOW LEVEL FLOW CONTINUES ACROSS THE REGION BELOW
SOUTHWESTERLY FLOW ALOFT. A WEAK UPPER TROUGH WILL MOVE TOWARD THE
REGION TONIGHT BEFORE PUSHING ACROSS THE REGION EARLY THURSDAY.
MOSTLY MID TO HIGH LEVEL CLOUDS OVER W WA WITH VFR CIGS. STRATUS
CONTINUES TO LINGER ALONG THE COAST, EVEN THOUGH BASES HAVE LIFTED
SOMEWHAT. CONDITIONS THERE REMAIN MVFR. STRATUS WILL AGAIN REDEVELOP
THIS EVENING TO BRING MVFR CEILINGS ONSHORE THROUGH THE COASTAL
AREAS TOWARDS 04Z AND INTO THE PUGET SOUND TERMINALS AROUND 09Z
THROUGH THE MORNING THURSDAY. SURFACE WINDS THIS EVENING SOUTHERLY
AND BREEZY WITH SPEEDS 10-15 KTS WITH SOME GUSTS POSSIBLE. SPEEDS
EASING TO 5-10 KTS OVERNIGHT AND REMAINING THAT WAY INTO THURSDAY
MORNING.
KSEA...VARIABLE MID-LEVEL CLOUDS THIS EVENING WITH BREEZY SOUTHERLY
WIND AROUND 10-15 KT. WIND SPEEDS EXPECTED TO EASE BY 12Z TO 5-10
KTS. STRATUS LIKELY RETURNS AROUND 09Z LATE TONIGHT BUT ARRIVES A
LITTLE HIGHER WITH CEILINGS EXPECTED IN THE 010-015 RANGE BEFORE
LIFTING 18-20Z THURSDAY.
MARINE
HIGH PRESSURE REMAINS OFFSHORE THROUGH MUCH OF THE
WEEK, BUILDING EASTWARD INTO THE COASTAL WATERS INTO THE WEEKEND.
WILL CONTINUE THE SMALL CRAFT ADVISORY FOR THE OUTER COASTAL COASTAL
WATERS DUE TO SEAS REMAINING GENERALLY 7 TO 10 FT WITH DOMINANT
PERIODS REMAINING AROUND 8 TO 9 SECONDS. WITH THE PERSISTENT
NORTHERLY WINDS, EXPECT SEAS TO REMAIN ELEVATED AND CHOPPY OVER THE
OUTER COASTAL WATERS THROUGH MUCH OF THE WEEK. WINDS WILL ALSO
REMAIN IN THE 20 TO 25 KT RANGE BEYOND AROUND 30 NM FROM SHORE INTO
THURSDAY. MEANWHILE, A PUSH OF WESTERLIES THROUGH STRAIT OF JUAN DE
FUCA WILL MAINTAIN ADVISORY STRENGTH WINDS THIS EVENING AND
OVERNIGHT. ADDITIONAL DIURNALLY DRIVEN PUSHES WILL BRING INCREASING
WINDS EACH OF THE NEXT SEVERAL EVENINGS, POTENTIALLY REACHING THE 20-
25 KT RANGE AT TIMES. A WEAK FRONT WILL THEN REACH THE WATERS EARLY
NEXT WEEK AROUND MONDAY.
SEW WATCHES/WARNINGS/ADVISORIES
WA...NONE.
PZ...SMALL CRAFT ADVISORY UNTIL 6 AM PDT THURSDAY FOR CENTRAL U.S.
WATERS STRAIT OF JUAN DE FUCA-EAST ENTRANCE U.S. WATERS
STRAIT OF JUAN DE FUCA.
SMALL CRAFT ADVISORY UNTIL 6 AM PDT FRIDAY FOR COASTAL WATERS
FROM CAPE FLATTERY TO JAMES ISLAND 10 TO 60 NM-COASTAL
WATERS FROM JAMES ISLAND TO POINT GRENVILLE 10 TO 60 NM-
COASTAL WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER 10
TO 60 NM.
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