Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
946
FXUS66 KSEW 092155
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
255 PM PDT Thu Apr 9 2026
.SYNOPSIS...
Warm and dry conditions prevail across the area through Friday.
Chances for rain return late Friday into Saturday with much
cooler conditions beginning this weekend. Showers will gradually
taper off Sunday with weak ridging on Monday. A stronger low
pressure system looks to reach the area mid-week.
&&
.SHORT TERM /TONIGHT THROUGH SATURDAY NIGHT/...
Weak upper level ridging will move across the area Thursday
night into Friday over southern British Columbia with an upper
level low moving inland across southern Oregon and northern
California. Mostly clear skies continue today but high clouds
will begin to fill in more tonight into Friday. This will help
to moderate low temperatures tonight (into the upper 30s to mid
40s). Warm conditions continue Friday with highs in the 60s to
low 70s.
Moisture will begin to move northward from Oregon into
southwestern Washington allowing for chances for showers to
begin late Friday, but the bulk of the precipitation is
expected on Saturday. High temperatures will drop into the mid
to upper 50s.
&&
.LONG TERM /SUNDAY THROUGH THURSDAY/...
Unsettled conditions continue into Sunday as showers begin to
taper off. Monday looks to remain mostly dry as weak, transient,
upper level ridging moves across the area and the upper level
low moves inland. Cooler and more active conditions then return
mid-week as an upper level trough moves in from the northwest,
which will bring in more windy and wet conditions. Lower snow
levels will bring light to moderate snowfall to the mountains
and passes. Below normal temperatures return with more frost
conditions possible with cold morning lows.
62
&&
.AVIATION...
Flow aloft has transitioned more south/southwesterly and will
continue into Friday as an upper low slowly moves towards the
California coast. Conditions remain VFR this afternoon and are
expected to continue through the majority of the TAF period.
Expect more mid to high level cloud cover to stream into the
region Friday morning, before showers start to move in from the
south later Friday afternoon into evening. Winds have been
persisting from the north/northeast this afternoon at 5-10 kts,
but will ease and become light at 6 kt or less after 06Z.
KSEA...VFR conditions expected through the majority of the TAF
period. Northerly winds around 5-8 kts this afternoon will
become light around 6 kt or less after 06Z.
14
&&
.MARINE...
Northerly winds will continue over the area waters tonight
through Friday with high pressure situated over the northeastern
Pacific and a low moving inland into California. A low pressure
system will move southward to the west of the area waters on
Friday, but will not have a significant impact to the area.
High pressure will then rebuild over the northeastern Pacific
over the weekend, while low pressure remains situated along the
West Coast. Onshore flow will persist as a result, with periods
of diurnal westerly pushes expected along the Strait of Juan de
Fuca at times. High pressure will then build back into the area
waters on Monday. At this time, the strongest westerly push
down the central and eastern Strait of Juan de Fuca looks like
it will be Monday night into Tuesday. A frontal system will
then move through area waters late Tuesday into Wednesday. At
this time, guidance continues to indicate roughly a 40-60%
chance for winds approaching small craft criteria for the
coastal waters and portions of the Strait of Juan de Fuca.
Seas will primarily range between 4-7 ft through the weekend and
into early next week, before approaching 10 ft on Wednesday.
14
&&
.HYDROLOGY...
No river flooding is expected in the next seven days.
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...None.
&&
$$
NWS SEW Office Area Forecast Discussion