Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
701
FXUS66 KSEW 032143
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
143 PM PST Tue Mar 3 2026
.SYNOPSIS...
Active weather continues this week with periods of lowland rain
and mountain snow through midweek. More frontal systems will
cross over the region over the weekend and into the early half
of next week, bringing breezy winds, periods of lowland rain,
and more heavier mountain snow.
&&
.SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/...
Scattered showers over the region this afternoon as upper level
troughing brings disturbances to western Washington. Unsettled
shower activity will continue throughout the remainder of the
evening, with high temperatures in the low to mid 50s. Snow
levels will remain generally around 4500 to 5000 feet, with snow
accumulations likely in the higher backcountry, especially in
areas around Mount Baker.
Upper level troughing will continue into Wednesday along with
post frontal showers across much of the interior. Snow levels
will lower slightly, generally around 3000 to 4000 feet.
Mountain snow will continue, with some light accumulations at
the passes into Thursday. Latest guidance generally shows around
2 to 4 inches at Stevens and Snoqualmie Pass, with the higher
end being focused at Stevens Pass. Hi-res guidance also shows a
Puget Sound Convergence Zone developing late afternoon/early
evening hours, along the King/Snohomish County line. Can`t rule
out a chance of locally heavier showers in these areas, along
with a few lightning strikes.
Slightly drier conditions on Thursday with some lingering shower
activity around (mainly for the mountains). High temperatures in
the upper 40s.
&&
.LONG TERM /FRIDAY THROUGH TUESDAY/...
Additional systems will continue over western Washington
throughout the weekend and into early next week. A stronger
frontal systems looks to enter the area Sunday into Monday
which could bring breezy winds across much of the interior,
along with more lowland rain and heavier mountain snow.
Mazurkiewicz
&&
.AVIATION...Moist southwest flow over western WA tonight with
rain and largely MVFR conditions. We`re in post-frontal onshore
flow on Wednesday with a slightly unstable air mass and a chance
of thunderstorms. Showers with a Puget Sound Convergence Zone
may form over King and Snohomish counties Wednesday afternoon.
Showers will be mainly confined to the Cascades Wednesday
evening. 33
KSEA...Rain and MVFR conditions expected tonight. S/SW winds
around 10 kt. Showers with a convergence zone in the vicinity
Wednesday afternoon and evening. 33
&&
.MARINE...A warm front will clip the area tonight followed by a
cold front early Wednesday, with increasing onshore flow
Wednesday afternoon. Highest winds will be over the Coastal
Waters and through the Strait of Juan de Fuca. Seas will build
over 10 ft Wednesday night and Thursday as a larger swell train
reaches the coast. The flow will remain onshore Friday and
through the weekend with possible SCA conditions. Stronger S/SW
flow will develop on Monday over all waters, keeping conditions
active. 33
&&
.HYDROLOGY...
No river flooding is expected during the next seven days.
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Small Craft Advisory until 4 PM PST Wednesday for Coastal
Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From Cape Flattery To James Island Out 10
Nm-Coastal Waters From James Island To Point Grenville 10
To 60 Nm-Coastal Waters From James Island To Point
Grenville Out 10 Nm-Coastal Waters From Point Grenville
To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point
Grenville To Cape Shoalwater Out 10 Nm-West Entrance U.S.
Waters Strait Of Juan De Fuca.
&&
$$
NWS SEW Office Area Forecast Discussion