753
FXUS66 KSEW 070253
AFDSEW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
753 PM PDT SUN JUL 6 2025
SYNOPSIS
WESTERN WASHINGTON WILL SEE A WARMING TREND AS A RIDGE
OF HIGH PRESSURE DOMINATES INTO TUESDAY. A WEAK SYSTEM WILL BRING
A BRIEF COOL DOWN AND A CHANCE OF LIGHT SHOWERS MIDWEEK BEFORE
HIGH PRESSURE REBUILDS FOR THE LATTER PART OF THE WEEK LEADING TO
A RETURN OF WARMER TEMPERATURES AND DRY CONDITIONS.
SHORT TERM /TONIGHT THROUGH WEDNESDAY/
TEMPS WERE IN THE UPPER
70S TO LOWER 80S IN THE INTERIOR TODAY AND WE'LL SEE MONDAY'S
READINGS A FEW DEGREES WARMER. NW WINDS WILL KEEP THE COAST
COOLER AND IN THE 60S. 33
PREVIOUS DISCUSSION...AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL
CONTINUE TO STRENGTHEN AND MOVE OVER WESTERN WASHINGTON THROUGH
MONDAY. THIS WILL LEAD TO CONTINUED CLEAR SKIES AND A WARMING
TREND. TEMPERATURES WILL BE SEVERAL DEGREES ABOVE SEASONAL
AVERAGES. THE SEATTLE METRO AREA SOUTHWARD HAS A MODERATE HEATRISK
ON TUESDAY, AFFECTING HEAT-SENSITIVE INDIVIDUALS. ENSEMBLE
GUIDANCE INDICATES THAT A WEAK TROUGH CROSSING BRITISH COLUMBIA
WILL HAVE SOME INFLUENCE ON WESTERN WASHINGTON TUESDAY NIGHT INTO
WEDNESDAY. THIS WILL PROMOTE INCREASED COOL ONSHORE FLOW AND A
CHANCE FOR LIGHT SHOWERS, ESPECIALLY ALONG THE COAST AND IN THE
NORTH CASCADES.
LONG TERM /THURSDAY THROUGH SUNDAY/
CONDITIONS SHOULD START TO
REBOUND SLIGHTLY ON THURSDAY. WHILE SOME LINGERING CLOUDS AND ISOLATED
LIGHT SHOWERS ARE POSSIBLE, THE OVERALL TREND WILL BE TOWARDS
PARTLY SUNNY SKIES AND TEMPERATURES IN THE 70S FOR INTERIOR AREAS.
AS THE MIDWEEK TROUGH MOVES EASTWARD, UPPER LEVEL RIDGING IS
EXPECTED TO REBUILD OVER THE REGION BY LATE WEEK. TEMPERATURES
WILL BEGIN TO CLIMB BACK INTO THE MID 70S TO LOW 80S ACROSS THE
INTERIOR LOWLANDS. ANOTHER WEAK FRONT MIGHT BRUSH THE AREA LATE
NEXT WEEKEND.
AVIATION
NORTHWESTERLY TO WESTERLY FLOW ALOFT AS RIDGING
GRADUALLY BUILDS OVER WESTERN WASHINGTON. ONSHORE FLOW WILL CONTINUE
IN THE LOWER LEVELS. VFR CONDITIONS WILL CONTINUE TO PERSIST AT ALL
TERMINALS THIS EVENING AS BENIGN CONDITIONS REMAIN. MARINE STRATUS
WILL HUG THE COAST TONIGHT AND INTO MONDAY MORNING, LIKELY BRINGING
MVFR/IFR CONDITIONS TO KHQM AND POTENTIALLY KOLM. ELSEWHERE, VFR
WILL REMAIN THROUGH MONDAY. NORTHERLY WINDS PERSIST AROUND 8 TO 12
KNOTS.
KSEA...VFR CONDITIONS WILL CONTINUE THROUGHOUT THE TAF PERIOD.
N/NE WINDS 8 TO 12 KNOTS THROUGHOUT THE EVENING WILL DECREASE
OVERNIGHT TO 4 TO 8 KNOTS AND WILL INCREASE AGAIN MONDAY
AFTERNOON.
MAZURKIEWICZ/18
MARINE
SURFACE HIGH PRESSURE CURRENTLY OFFSHORE WILL REMAIN
THERE UNTIL EARLY THIS WEEK. DIURNALLY DRIVEN WESTERLY PUSHES DOWN
THE STRAIT WILL CONTINUE OVER THE NEXT SEVERAL EVENINGS AS LOWER
PRESSURE REMAINS INLAND. THE WESTERLY PUSH TONIGHT IS WEAKER THAN
THE PREVIOUS COUPLE OF NIGHTS AND LOOKS TO REMAIN ABOVE ANY SMALL
CRAFT CRITERIA. ALTHOUGH, CANNOT RULE OUT A FEW ROGUE GUSTS OF
SMALL CRAFT STRENGTH HERE AND THERE, AS IT WILL REMAIN RATHER
BRIEF.
A QUICK-MOVING FRONTAL SYSTEM WILL CROSS THE WATERS TUESDAY NIGHT
INTO WEDNESDAY, BRINGING AN UPTICK IN WIND AND SEAS, BUT AT THIS
TIME IT LOOKS TOO WEAK TO HAVE ANY SIGNIFICANT IMPACT.
COMBINED SEAS GENERALLY AROUND 4 TO 6 FEET WILL STAY THROUGHOUT
THE FIRST HALF OF THE WEEK. CONTINUOUS NORTHERLY WINDS MAY CREATE
STEEP SEAS AT TIMES THROUGHOUT THE WEEK.
MAZURKIEWICZ/18
SEW WATCHES/WARNINGS/ADVISORIES
WA...NONE.
PZ...NONE.
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