116
FXUS66 KSEW 160935
AFDSEW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
235 AM PDT FRI OCT 16 2026
SYNOPSIS
A RIDGE WILL BRING DRY AND WARM CONDITIONS TODAY.
WETTER AND COOLER WEATHER ARRIVES ON SATURDAY. SUNDAY REMAINS
COOL WITH MORE WET WEATHER HEADED OUR WAY ON MONDAY. ANOTHER
FRONT MAY REACH US MIDWEEK.
SHORT TERM /TODAY THROUGH SUNDAY/
HIGH PRESSURE AND OFFSHORE
FLOW WILL LEAD TO ONE MORE WARM AND DRY DAY ACROSS WESTERN WA.
EAST WINDS HAVE PEAKED OVERNIGHT WITH 40-50 MPH GUSTS IN THE
CASCADE RIDGES AND 20-30 MPH IN THE GAPS. WINDS WILL CONTINUE TO
EASE TODAY. PATCHY, SHALLOW, FOG IS FORMING ONCE AGAIN THIS
MORNING, ESPECIALLY IN AREAS WHERE THE WIND IS CALM. THE FOG
WILL BURN OFF LATE THIS MORNING. TEMPERATURES WILL TRACK WARMER
THAN AVERAGE WITH AFTERNOON HIGHS IN THE LOWER TO MID 70S.
EXPECT 60S NEAR THE WATER.
FRIDAY NIGHT/SATURDAY WILL BE COOLER AND WETTER AS THE RIDGE
SHIFTS EAST AND A FRONT AND TROUGH MOVE IN FROM THE WEST. THE
BULK OF THE RAIN WILL FALL TONIGHT INTO SATURDAY MORNING AND
MAINLY AFFECT THE COAST AND MOUNTAINS. SHOWERS WITH A
CONVERGENCE ZONE ARE EXPECTED SATURDAY AFTERNOON NEAR THE
KING/SNOHOMISH LINE. A FEW SUNBREAKS ARE EXPECTED OUTSIDE THE
CONVERGENCE ZONE WITH AFTERNOON HIGHS IN THE 50S TO LOWER 60S.
WE'RE IN BETWEEN SYSTEMS ON SUNDAY FOR COOL BUT DRY WEATHER.
SUNDAY MORNING LOWS WILL BE IN THE 30S AND 40S WITH TEMPS NEAR
FREEZING AROUND THE SOUTH SOUND. HIGHS WILL BE MOSTLY IN THE
50S. 33
LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
AN UPPER LEVEL LOW
WILL SPIN OFFSHORE ON MONDAY, WITH SHOWERS MAINLY CLIPPING THE
COAST. THIS SYSTEM WILL WEAKEN AS IT SHIFTS FARTHER SOUTH ON
TUESDAY, WITH LIGHT/DRY OFFSHORE FLOW ACROSS WESTERN WA. A WEAK
FRONT DISSIPATES AS IT REACHES THE REGION WEDNESDAY NIGHT AND
THURSDAY FOR A CHANCE OF LIGHT RAIN. 33
AVIATION
SOUTHWESTERLY FLOW ALOFT THROUGH SATURDAY. SURFACE
HIGH PRESSURE WEAKENING TODAY. FRONTAL SYSTEM MOVING THROUGH THE
AREA SATURDAY MORNING.
VFR CONDITIONS TODAY WITH THE EXCEPTION OF SOME PATCHY FOG
PRODUCING LIFR CONDITIONS OVER THE SOUTHWEST INTERIOR AND THE
KITSAP PENINSULA UNTIL 17Z. MVFR CEILINGS DEVELOPING ALONG THE
COAST TONIGHT AROUND 03Z. THE MVFR CEILINGS WILL SPREAD INLAND
08Z-12Z SATURDAY.
KSEA...MOSTLY CLEAR SKIES TODAY. CEILINGS LOWERING TONIGHT TO
AROUND 5000 FEET 06Z-09Z AND TO 1500 TO 2000 FEET 09Z-12Z. LIGHT
WIND LESS THAN 5 KNOTS BECOMING SOUTHERLY 4 TO 8 KNOTS THIS
AFTERNOON. FELTON
MARINE
HIGH PRESSURE OVER THE WATERS WILL WEAKEN TODAY. A
FRONTAL SYSTEM WILL MOVE THROUGH LATE TONIGHT INTO SATURDAY
MORNING. HIGH PRESSURE BUILDING OVER THE WATERS SATURDAY
AFTERNOON WILL REMAIN THROUGH SUNDAY. ANOTHER SYSTEM WILL MOVE
BY WEST OF THE COASTAL WATERS MONDAY. HIGH PRESSURE WILL REBUILD
OVER THE AREA TUESDAY.
SMALL CRAFT ADVISORY WESTERLIES IN THE CENTRAL AND EASTERN
STRAIT OF JUAN DE FUCA SATURDAY.
SEAS 5 TO 7 FEET TODAY BUILDING TO 7 TO 9 FEET SATURDAY AND
SUNDAY. SEAS SUBSIDING BACK DOWN TO 4 TO 6 FEET BY TUESDAY.
FELTON
SEW WATCHES/WARNINGS/ADVISORIES
WA...NONE.
PZ...SMALL CRAFT ADVISORY FROM 6 AM TO 6 PM PDT SATURDAY FOR
CENTRAL U.S. WATERS STRAIT OF JUAN DE FUCA-EAST ENTRANCE
U.S. WATERS STRAIT OF JUAN DE FUCA.
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