Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
992
FXUS66 KSEW 261037
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
337 AM PDT Sun Jul 26 2026
.SYNOPSIS...
Slow moving front offshore will move inland later today and
dissipate tonight over the interior. Temporary high pressure
Monday before another weak front arrives Tuesday. Dry and
warmer weather Wednesday into Friday as an upper level ridge
centered over the Southwest builds back towards the Pacific
Northwest. Another weak front will try and move into the area
Saturday.
&&
.SHORT TERM /TODAY THROUGH TUESDAY/...
Satellite imagery shows cloudy skies over Western Washington
early this morning. Doppler radar indicating rain along the
coast down to about Hoquiam. Temperatures at 3 am/10Z were in
the mid 50s to mid 60s.
Weak front offshore slowly moving inland today. Rain along the
coast spreading into the Northwest Interior this morning. Cloudy
skies continuing through the afternoon. By late afternoon the
rain chances will spread inland to the Lower Chehalis Valley and
in the Puget Sound area from about Seattle northward. Not much
temperature spread with the cloud cover. Highs in the mid 60s
to lower 70s interior and lower to mid 60s coast.
Front dissipating over the interior this evening with shower
chances confined to the north coast by 06Z. Mostly cloudy skies
overnight into Monday morning. Lows in the 50s and lower 60s.
Upper level trough well offshore Monday with a little bit of
upper level ridging over Western Washington. Temporary surface
ridge along the coast. Warm front extending out of the trough
close enough for a chance of showers along the north coast. For
the remainder of the area just some middle and high level
clouds embedded in the southwesterly flow aloft. Highs warming
over the interior into the 70s and lower 80s ( getting back to
near normal ). Highs along the coast in the mid 60s.
Trough offshore moving inland Tuesday. Warm front lifting north
Monday night with the trailing cold front reaching the coast
Tuesday morning. What is left of the front moving inland Tuesday
afternoon. Not much in the way of rainfall with the front with
about a quarter inch along the north coast and West Slopes of
the Olympics. Just a few hundredths at best elsewhere. Lows
Monday night in the 50s. Highs along the coast in the mid 60s
with upper 60s to mid 70s inland.
Measurable rain for the Seattle area is rare this time of year.
The last time there was measurable rain on July 27th ( Monday )
was 2001 and on July 28th ( Tuesday ) was in 2002. Felton
&&
.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
Models showing good consistency Tuesday night through Friday
with the strong upper level ridge centered over the Desert
Southwest back building into the Pacific Northwest. Low level
flow remaining onshore which will keep daytime high temperatures
near normal. Slow warming trend for the interior with highs in
the 70s Wednesday warming to the mid 70s to mid 80s Friday.
Highs along the coast in the 60s and lower 70s. Lows all areas
in the 50s.
Unlike previous runs, the current extended model suite has the
upper level ridge moving east Friday night into Saturday with
yet another upper level trough/weak front Saturday. Confidence
not real high with the quick switch in the pattern especially
this time of year when the ridge should hang tougher. For now
will go with cooler high temperatures Saturday, mid 60s coast
and 70s inland, with just a chance of showers mainly for the
coast and mountains. Felton
&&
.AVIATION...
Weak front moving inland today dissipating over the interior
tonight. Southwesterly flow aloft. VFR ceilings over the
interior with areas of MVFR ceilings 14z-19z. The exception to
this will be near Bellingham where MVFR ceilings could last into
the afternoon hours. IFR/LIFR conditions along the coast
improving to MVFR this afternoon.
KSEA...VFR ceilings with MVFR at times 14z-19z. Southerly wind 4
to 8 knots becoming southwesterly 6 to 10 knots around 18z.
Felton
&&
.MARINE...
A slow moving front will move inland later today and dissipate
tonight over the inland waters. High pressure will build in
behind the front Monday. Another front will move into the area
waters Tuesday. High pressure again building in behind the front
Tuesday night will remain over the waters through Thursday
night.
Diurnal westerly pushes through the Strait of Juan de fuca could
produce small craft advisory westerly winds in the evening
Wednesday through Friday. Felton
&&
.FIRE WEATHER...
Fire weather concerns easing through Tuesday with chances for
precipitation today and again Tuesday. The north coast and West
Slopes of the Olympics got a wetting rain Saturday. With the
front weakening today the chances for more wetting rains in
those locations are less than 50 percent. The front on Tuesday
will be weaker producing less precipitation. Dry and warmer
Wednesday through Friday. Even with the warm up, low level
onshore flow will give the area good relative humidity
recoveries in the overnight hours. Felton
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...None.
&&
$$
NWS SEW Office Area Forecast Discussion