Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
663
FXUS66 KSEW 231112
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
312 AM PST Mon Feb 23 2026
.SYNOPSIS...
An upper-low will continue to spin offshore as the pattern
remains active into the new week. Lowland rain and mountain
snow will continue through midweek. Conditions will dry out by
the end of the week and into the weekend with temperatures
cooling.
&&
.SHORT TERM /TODAY THROUGH WEDNESDAY/...
Broad troughing continues over the NE Pacific along with an
upper level low offshore. This upper level low will keep
moisture funneling throughout the region today. Lowland rain
will continue, along with mountain snow. Snow levels have risen
and will stay anywhere between 3000 to 4000 feet through this
morning, before lowering again to 2500 feet by this afternoon.
A Winter Weather Advisory will continue for all of the mountain
zones through 1PM. Showers will decrease in coverage by this
evening, the exception being areas south of Seattle like Olympia
and the Cascades in Lewis and Pierce Counties, where hi-res
models have moisture persisting. Overall, precipitation will
decrease in volume and intensity as the day progresses. High
temperatures topping out in the upper 40s/lower 50s.
Transient ridging will nudge into the region on Tuesday for
drier conditions across much of the area, although cannot rule
out some lingering shower activity, especially in the
mountains. Not much fluctuation in high temperatures.
Heading into Wednesday, western Washington will be under a
northwesterly flow regime. A chance for some showers will exist,
but again the day looks to be mostly dry with afternoon temps in
the upper 40s.
&&
.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
Ensemble guidance continues to highlight northwesterly flow
across much of the Pacific Northwest throughout the end of the
week with drier conditions. Shower chances will exist but
mainly confined to the mountains. Dry and slightly cooler
temperatures in the mid 40s through the weekend.
Mazurkiewicz
&&
.AVIATION...Moist SW flow over western WA with rain through the
afternoon. Ceilings are a mixed bag with pockets of MVFR
conditions in rain. Gusty south winds to 20 kt through 18z near
Puget Sound. Expecting mainly VFR conditions this afternoon.
Drier conditions tonight into Tuesday morning. 33
KSEA...Rain at times today with gusty south winds 10-20kt
through 18z. VFR conditions are holding. Drier tonight with
winds turning northerly by 06-09Z. 33
&&
.MARINE...A front will cross western WA today with elevated wind
(early this morning) and seas (through the afternoon). The flow
will turn offshore tonight and Tuesday with low pressure over
Oregon. Onshore flow resumes on Wednesday with high pressure
over the offshore waters. Small Craft Advisory winds are
possible over the coastal waters and through the Strait of Juan
de Fuca. Seas will build over 10 ft Thursday and Friday. 33
&&
.HYDROLOGY...
No river flooding is expected over the next 7 days.
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...Winter Weather Advisory until 1 PM PST this afternoon for
Cascades of Pierce and Lewis Counties-Cascades of
Snohomish and Northern King Counties-Cascades of Southern
King County-Cascades of Whatcom and Skagit Counties.
PZ...Small Craft Advisory until 4 AM PST early this morning for
Admiralty Inlet-East Entrance U.S. Waters Strait Of Juan
De Fuca-Grays Harbor Bar-Northern Inland Waters Including
The San Juan Islands.
Small Craft Advisory until 10 AM PST this morning for Puget
Sound and Hood Canal.
Small Craft Advisory until 4 PM PST this afternoon 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.
&&
$$
NWS SEW Office Area Forecast Discussion