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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