Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
007
FXUS66 KSEW 070247
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
747 PM PDT Mon Apr 6 2026
.SYNOPSIS...Warm conditions will continue today before a cool-
down on Tuesday. Dry conditions will prevail through the week,
with a gradual warming trend peaking on Friday. Chances for
light lowland rain and mountain snow increase into the weekend.
&&
.SHORT TERM /TONIGHT THROUGH WEDNESDAY NIGHT/...The current
forecast remains on track with no planned updates. 33
Previous discussion...Unseasonably warm conditions will
continue today across the Puget Sound and southward, with highs
on track to reach the upper 60s to lower 70s. As the high
pressure ridge continues to progress inland today, onshore flow
will resume along the coast, where temperatures will be limited
to the mid to upper 60s.
Onshore flow will continue to increase tonight as an upper level
low progresses inland over western Canada. Breezy westerly winds
will pick up tonight through the Strait of Juan de Fuca and
along the Pacific Coast and northern Interior coastlines as a
result. This system will also bring much cooler air into western
Washington, with highs returning to near normal in the mid to
upper 50s on Tuesday.
As a low pressure system stalls offshore of California, dry
northwesterly flow will develop over the Pacific Northwest by
Wednesday. With cooler overnight temperatures near freezing,
frost may develop across portions of the region Wednesday
morning that may impact sensitive crops and plants. Temperatures
will quickly warm by the afternoon, with highs reaching the
upper 50s to lower 60s under clear skies.
&&
.LONG TERM /THURSDAY THROUGH MONDAY/...The upper level pattern
will remain fairly steady through Thursday, with northwest flow
aloft and highs in the mid to upper 60s across the Interior.
Forecast confidence decreases into Friday, with some models
maintaining dry conditions across the Pacific Northwest while
others bring a cutoff low inland across western Washington.
Chances for rain will increase into the weekend, with a large
spread in temperatures. Ensembles favor a more active pattern
developing over the weekend, with cooler temperatures and light
lowland rain and mountain snow.
15
&&
.AVIATION...Westerly flow aloft becoming more northwesterly
into Tuesday. Onshore flow present as the lower levels.
Widespread VFR conditions in place with scattered high clouds
overhead. There are isolated patches of MVFR conditions along
the coast, but nothing impacting TAF sites. This VFR will
persist into tonight, however convergence is expected to develop
overnight which may impact the Puget Sound terminals. There is
low confidence but low-end VFR to high-end MVFR cigs are
possible for KSEA, KBFI and KPAE overnight into Tuesday morning
with IFR to LIFR again possible for KHQM by Tuesday morning.
KSEA...Surface winds W/NW this evening before shifting more N/NW
tonight. VFR this evening and early tonight but a 25% chance of MVFR
cigs are possible into early Tuesday morning. If manifest, VFR cigs
are likely to return in the usual 18-20Z window.
41/18
&&
.MARINE...Onshore winds are increasing as a front passes by to
the north and stronger high pressure builds in behind it. Small
Craft Advisory remains for the coastal waters, West Strait, and
Admiralty Inlet. A new SCA has been issued for the Northern
Inland waters this evening into Tuesday morning. The Gale
Warning remains for the Central/Eastern Strait. Seas are also
going to increase tonight, with 9-11 ft waves expected. The
northernmost outer coastal zone could see seas up to 15 feet
late tonight as it is closer to the path of the low pressure
system. Winds of 25 to 35 kts are possible with the occasional
gust to 40 kt possible. Winds will slowly ease on Tuesday and
remain relatively light through the rest of the week as high
pressure remains in place over the northeast Pacific.
41
&&
.HYDROLOGY...No river flooding is expected over the next 7
days.
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Small Craft Advisory until 2 PM PDT Tuesday for Coastal Waters
From Cape Flattery To James Island 10 To 60 Nm-Coastal
Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville 10 To
60 Nm-Coastal Waters From James Island To Point Grenville
Out 10 Nm-Coastal Waters From Point Grenville To Cape
Shoalwater 10 To 60 Nm-Coastal Waters From Point
Grenville To Cape Shoalwater Out 10 Nm-West Entrance U.S.
Waters Strait Of Juan De Fuca.
Gale Warning until 5 AM PDT Tuesday for Central U.S. Waters
Strait Of Juan De Fuca-East Entrance U.S. Waters Strait
Of Juan De Fuca.
Small Craft Advisory until 9 AM PDT Tuesday for Northern
Inland Waters Including The San Juan Islands.
Small Craft Advisory until 5 AM PDT Tuesday for Admiralty
Inlet.
&&
$$
NWS SEW Office Area Forecast Discussion