Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
373
FXUS66 KSEW 102246
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
246 PM PST Tue Feb 10 2026
.SYNOPSIS...
Dry conditions will persist through early Thursday as an upper level
ridge builds over Western Washington, bringing the chance for
morning fog or low stratus. The ridge will weaken late Thursday as
the next frontal system arrives, bringing lowland rain and mountain
snow. Unsettled and cooler conditions continue into the weekend,
with additional systems expected to move over the region.
&&
.SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/...
Mostly clear skies this afternoon with a few high clouds around. A
weak upper level ridge will settle over Western Washington early
Wednesday, bringing another round of morning fog/low clouds,
especially along the southern interior. Improvement expected by late
morning or early afternoon to mostly clear skies with high
temperatures in the upper 40s to low 50s. The upper level ridge will
begin to flatten Thursday evening as the next frontal system
approaches. With the ridge still in place Thursday morning, another
round of fog/low clouds is likely. Cloud cover will increase inland
Thursday afternoon as the frontal system arrives to the
coastline.
&&
.LONG TERM /FRIDAY THROUGH TUESDAY/...
The aforementioned frontal system will continue into Friday bringing
widespread lowland rain and mountain snow. There is good agreement
between ensembles that the weather pattern will remain unsettled
into the weekend and into early next week. In addition, model
guidance continues to highlight an upper level trough digging
southwards into California on Sunday, opening the opportunity for a
colder air mass to settle over Western Washington through Tuesday.
This may bring the potential for snow to mix with rain at the lower
elevations during the overnight hours. However, at this time no
accumulation is expected for the lowlands given that PoPs will be
generally less than 30% and QPF amounts are less than 0.05
inches. 29
&&
.AVIATION...
Weak high pressure will nudge inland tonight and
Wednesday for dry and stable conditions. The flow aloft is
westerly, becoming northerly on Wednesday morning. Low clouds
and fog will redevelop overnight and mainly impact areas around
the south sound. Low clouds and fog will dissipate by 18-20Z
with VFR conditions expected. 33
KSEA...N winds 8-12kt with VFR conditions this evening. Patchy
low clouds in the vicinity 12-16Z. 33
&&
.MARINE...
High pressure will continue building over area waters through
Thursday morning, bringing calm marine conditions. A front will move
over the waters late Thursday into Friday, with additional systems
possible into the weekend and early next week.
Seas 7 to 8 ft this afternoon will continue decreasing to 5 to 6 ft
by Wednesday and begin to rise Thursday afternoon, building as high
as 13-17 ft early Friday morning. Seas will gradually decrease
Friday evening, hovering between 8 to 10 ft through early next
week. 29
&&
.HYDROLOGY...
River flooding is not expected during the next seven days
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...None.
&&
$$
NWS SEW Office Area Forecast Discussion