Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
531
FXUS66 KSEW 271012
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
312 AM PDT Mon Jul 27 2026
.SYNOPSIS...
Weak warm front hanging over the north coast today will lift
north tonight. Trailing weak cold front will move through
Tuesday. Dry and warmer weather Thursday and Friday as an upper
level ridge centered over the Southwest builds back towards the
Pacific Northwest. Ridge weakens Friday night. Upper level
trough moving into Western Washington over the weekend with
cooler temperatures and a chance of showers mainly coast and
mountains.
&&
.SHORT TERM /TODAY THROUGH WEDNESDAY/...
Satellite imagery shows cloudy skies over Western Washington
early this morning. Doppler radar still has some light rain
along the north coast. Temperatures at 3 am/10Z were in the mid
50s to lower 60s.
Weak warm front hanging out over the north coast today keeping
a chance of rain in the forecast for the north coast and West
Slopes of the Olympics. Remainder of the area in the warm sector
( means a lot more in the winter ) with low clouds dissipating
this morning and middle and high levels clouds at times this
afternoon. High temperatures warming a few degrees over the
interior but still staying in the 70s. Highs in the mid 60s
along the coast.
Warm front lifting north tonight with the weak trailing cold
front moving through mainly the northern sections Tuesday. Rain
increasing along the coast tonight spreading inland over the
Northwest Interior and the North Cascades Tuesday morning.
Chance of light rain or drizzle in the Puget Sound area during
the morning commute. Front dissipating in the afternoon. Lows
tonight in the 50s. Highs Tuesday in the mid 60s to mid 70s.
Upper level trough well offshore Tuesday night and Wednesday with
southwesterly flow aloft continuing over the area. Models have
slowed down the ridge building which now looks to begin Thursday.
Lows in the 50s. Highs in the 70s for the interior and mid to
upper 60s coast. Felton
&&
.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
Models delaying the start ridge building from the southeast
into Thursday. 500 mb heights rising into the mid to upper 580
dms Friday with yet another upper level trough digging south
offshore. Highs Thursday warming into the 70s and lower 80s for
the interior. Friday will be the warmest day with highs in the
mid 70s to mid 80s inland. Highs along the coast both days in
the mid 60s to lower 70s.
Upper level trough moving into Western Washington for the
weekend with a couple of shortwaves moving through the northern
portion of the area. Most of the precipitation confined to the
coast with just an increase in cloud cover and cooler
temperatures over the interior with these features. Highs inland
in the 70s Saturday and upper 60s to mid 70s Sunday. Highs on
the coast in the mid 60s. Felton
&&
.AVIATION...
Weak warm front along the north coast lifting north tonight.
Weak cold front moving through the northern portion of the area
Tuesday. Southwesterly flow aloft with low level onshore flow.
MVFR ceilings coast and over portions of the interior this
morning. VFR ceilings over all of the interior by noon with MVFR
ceilings along the coast continuing the rest of the day.
KSEA...MVFR ceilings this morning between 2000 and 3000 feet
lifting to VFR 16Z-18Z. Just middle and high level clouds this
afternoon and tonight. Southerly wind 6 to 10 knots becoming
southwesterly 18Z-21Z. Felton
&&
.MARINE...
Weak warm front hanging over the northern coastal waters today
will lift north tonight. Weak cold front moving through Tuesday.
High pressure will build in behind the front Tuesday night then
remain over the waters through Friday.
Small craft advisory winds likely in the Central and Eastern
Strait of Juan de Fuca both Thursday and Friday evenings. Felton
&&
.FIRE WEATHER...
Weak warm front over the north coast today lifting north
tonight. Weak cold front moving through the northern portions
Tuesday. Wetting rains for the north coast and West Slopes of
the Olympics likely ( 50-60 percent chance ). Drier conditions
return Wednesday with a brief warming trend Thursday and
Friday. Minimum RH values dip into the 30s Thursday and Friday,
but persistent low level onshore flow will help maintain good
humidity recoveries in the overnight hours. Cooler weather over
the weekend will keep fire weather concerns at a minimum. Felton
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...None.
&&
$$
NWS SEW Office Area Forecast Discussion