FXUS66 KSEW 032126

AFDSEW



Area Forecast Discussion

National Weather Service Seattle WA

226 PM PDT Thu Jul 3 2025



.SYNOPSIS...Seasonably warm weather for the 4th of July holiday 

is expected with a weak trough pushing through the area late this 

week. A warming trend is expected by early next week as a ridge of

high pressure build across the western states. 



&&



.SHORT TERM /TONIGHT THROUGH SUNDAY/...Clouds have been slow to 

clear over western Washington today, and temperatures have also 

been slow to rise. At 1 PM, readings were from the low to mid 60s 

at most locations. A trough moving through southern Canada will 

slide east overnight but additional troughing will approach the 

region from the west as well. This will provide continued tranquil

weather overnight and low temperatures on the cool side, from the

mid 40s to 50s. As the trough pushes east Friday, it looks to 

generate thunderstorm activity but this is expected to remain east

of the forecast area. This will provide more cloudiness in the 

afternoon and evening, but temperatures will warm above todays 

readings and be near normal in the middle to upper 70s for highs. 

The trough exits Friday overnight, allowing a somewhat zonal flow 

over the area with a series of weak systems nearby. This will 

allow for near normal conditions with lows in the 40s/50s and 

highs in the 70s and no significant weather or impacts expected. A

slight warming trend will shape up later on Sunday as heights 

begin to rise and a few more lower 80s for highs are expected 

especially south. 





.LONG TERM /MONDAY THROUGH THURSDAY/...The first portion of the 

coming week should feature a warming trend. Heights will climb 

alongside a strengthening mid level ridge of high pressure over 

the four corners region. This will bring highs back above normal 

on Monday and Tuesday, with lower and mid 80s more common across 

the region. With warming overnight lows closer to 60 degrees by 

Tuesday morning, the overall heat impact levels will begin to inch

up somewhat. This will bear monitoring in the extended time 

period by Tuesday. Some increasing uncertainty by mid week. The 

corners ridge becomes quite strong, however a series of troughs 

over the north Pacific may do their best to hold mid level ridging

at bay to our south. The current forecast indicates highs 

remaining in the low to mid 80s for the mid-latter part of next 

week. 



One constant through the next several days is that it looks to

remain dry across the forecast area. Storms are expected to be too

far east and then with ridging building in there are no rain

chances to speak of.



&&



.AVIATION...Mostly VFR this afternoon with pockets of MVFR ceilings 

lingering along the Puget Sound. Clouds will continue to scatter this 

afternoon into tonight with generally N/NW surface winds. MVFR stratus 

deck will reform along the coast into the early morning Friday and 

expand inland, likely staying to the west of the Puget Sound.



KSEA...VFR with mid level clouds continuing to scatter throughout the 

afternoon. VFR is favored to continue through the TAF period, with low 

potential (15% to 20%) of MVFR ceilings in low stratus drifting east 

early Friday morning. NW to NE winds 10 kt or less will continue 

through much of the period before shifting SW later Friday afternoon.



15



&&



.MARINE...High pressure will remain in place across the coastal and 

offshore waters today, allowing for evening westerly pushes through the 

Strait of Juan de Fuca. The Central and Eastern Strait will see west 

winds just below SCA criteria this evening. A front will cross area 

waters on Friday, generating another round of strong winds through the 

Strait. A Gale Watch has been issued for Friday evening through 

Saturday morning, but some uncertainty exists over how strong the winds 

will be. A weak front will dissipate over the offshore waters Saturday, 

with a series of weak fronts crossing area waters next week.



Seas will remain between 4 to 7 feet through the period.





15



&&



.SEW WATCHES/WARNINGS/ADVISORIES...

WA...None.

PZ...Gale Watch from Friday afternoon through late Friday night for 

     Central U.S. Waters Strait Of Juan De Fuca-East Entrance 

     U.S. Waters Strait Of Juan De Fuca.



&&



$$