Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
369
FXUS66 KSEW 241013
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
313 AM PDT Fri Jul 24 2026
.SYNOPSIS...
An upper-level trough offshore will push inland over the
weekend, bringing cooler temperatures to the area and additional
chances of showers. Troughing will persist through early next
week, allowing for temperatures to trend just below to near
normal with continued PoPs. Drier conditions favored midweek
onward.
&&
.SHORT TERM /TODAY THROUGH SUNDAY/...
The upper-level pattern can be characterized by an upper-low
over the NE PAC and stout ridging centered over the SW US. At
the surface, low-level onshore flow is ongoing across W WA with
developing marine stratus this morning. It`ll become widespread
before retreating back to the coast this afternoon with help of
diurnal heating. Today, subtle ridging is amplifying across the
region, bringing a brief spell of above average temperatures.
Interior highs are forecast to range between the upper 70s to
mid 80s. Coastal areas of course cooler in the lower to mid 60s.
Dry conditions again tonight but the aforementioned upper-low
will begin to show signs of progression as it becomes ingested
within the mean flow. Marine stratus on track to redevelop
overnight into Saturday morning under continued onshore flow.
Min temperatures will fall between the lower to upper 50s.
The upper-low will finally move inland on Saturday as PoPs
return into the forecast, primarily over the coast and mountain
areas. Models have rain showers straggling into Sunday as well
as upper-troughing becomes the main influence across W WA.
This pattern favored onshore flow as reoccurring spells of
marine stratus and slightly below-normal temps trend throughout
the weekend with highs 70s.
41
&&
.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
Looking forward into next week, upper level troughing remains
the dominant influence across the area as several systems move
down from the Gulf of Alaska. Some model solutions show the
upper level high over the Four Corners region retrograding
westward, which may allow conditions to trend drier and warmer towards
the second half of the week. Otherwise temperatures generally
remain around climatological normals.
41
&&
.AVIATION...
Weak upper level ridging is over western WA today
for dry and stable weather. Near the surface, onshore flow
prevails with marine stratus clouds filling in across the
lowlands this morning - expect IFR to MVFR conditions across
most areas. Low clouds will burn back toward the coast this
afternoon with VFR conditions in the interior. Low clouds will
return overnight as onshore flow continues. 33
KSEA...Low clouds filling in the morning with MVFR to IFR
conditions. Stratus will burn off by 18-20z. S to SW winds
around 5-10kt today. 33
&&
.MARINE...Low level onshore flow continues today with strongest
winds through the central/east Strait of Juan de Fuca - a Small
Craft Advisory is in effect. A frontal system will stall
offshore on Saturday then shift inland late Sunday. Another
front will cross the waters on Tuesday. 33
&&
.FIRE WEATHER...
More benign fire weather conditions expected today through early
next week. The low offshore will finally make its way over the
region. This will result increased onshore flow with cooler
temperatures and shower chances through the weekend into the
first part of next week easing fire weather concerns. Additional
thunderstorms are not likely but can`t be ruled out at this
time.
41
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Small Craft Advisory until 5 AM PDT early this morning for
Central U.S. Waters Strait Of Juan De Fuca-East Entrance
U.S. Waters Strait Of Juan De Fuca.
Small Craft Advisory from 5 PM this afternoon to 5 AM PDT
Saturday for Central U.S. Waters Strait Of Juan De Fuca-
East Entrance U.S. Waters Strait Of Juan De Fuca.
&&
$$
NWS SEW Office Area Forecast Discussion