Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
044
FXUS66 KSEW 062126
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
226 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/...
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. Mostly VFR this afternoon
across area terminals. The only exception being KHQM where LIFR cigs
are in place as they hug the coastline. Mostly VFR tonight however,
convergence is expected to develop this evening over 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 LIFR again possible for KHQM Tuesday morning.
KSEA...Surface winds S/SW this afternoon before shifting out of the
N/NW around 23z-00z. VFR into the evening but a 25% chance of MVFR
cigs are possible into early Tuesday morning. If manifest, VFR cigs
are likely to return by the afternoon.
41
&&
.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 from 5 PM this afternoon to 5 AM PDT
Tuesday for Admiralty Inlet.
&&
$$
NWS SEW Office Area Forecast Discussion