632
FXUS66 KSEW 282156
AFDSEW

Area Forecast Discussion
National Weather Service Seattle WA
156 PM PST Fri Nov 28 2025

.SYNOPSIS...
A clear and mild afternoon will continue across western
Washington as high pressure builds in. A partly cloudy but dry
weekend is in store, with only weak passing systems expected
into next week. A stronger system is possible late next week
into next weekend.

&&

.SHORT TERM /TODAY THROUGH SUNDAY NIGHT/...
It is a pleasant afternoon out there as high pressure builds in
and sunshine returns. Temperatures will cool a bit over the
weekend into the upper 40s, but periods of sunshine will break
through the clouds at times. A weak disturbance moving through
tomorrow could generate a few afternoon showers, but the
likelihood is higher in the majority of the region remaining
mostly dry. Low temperatures will also be coming down in the mid
30s over the weekend, with 20s in the Cascade foothills and at
the pass levels. Winds will be light and generally northeasterly
throughout the weekend.

&&

.LONG TERM /MONDAY THROUGH THURSDAY/...
Generally quiet weather persists through much of the week. As
high pressure remains offshore, expect a few weak disturbances
to move through the area and generate some precipitation. Light
rain is possible Monday evening lasting through Tuesday morning
and then again Wednesday afternoon into Thursday. In each of
these systems, some light mountain snow is possible but won`t
accumulate to particularly impactful amounts. In between these
periods of rain, expect it to be mostly cloudy.

The deterministic model runs are suggesting a more potent system
possible late in the week, while the ensemble cluster analysis
shows more of a ridge dominance. More details will emerge as the
week progresses.

21


&&

.AVIATION...
VFR presently across all terminals, and will persist through the
afternoon and much of the evening hours. North to northeasterly
winds will continue throughout the TAF period, remaining gusty
between 25-30 kts at KBLI through 01Z-02Z. Some mid and upper
level clouds will begin to filter into the area this afternoon
and evening. Coupled with continued northeasterly flow,
confidence in fog tomorrow morning is limited. Areas south of
OLM could see patchy fog, but will likely not be widespread.

KSEA...
VFR at the terminal this afternoon with northeasterly winds of
10 kts. Wind speeds will ease below 7 kts this afternoon between
00Z and 01Z, but remain northeasterly. The model guidance still
isn`t latching on to a definitive fog event in the morning, but
have opted to keep some lower SCT clouds in the TAF with a
ceiling not less than 3000 feet. VFR expected throughout the day
tomorrow.

21

&&

.MARINE...
Easterly/northeasterly offshore winds continuing across portions of
the waters this afternoon with high pressure over the area. These
are most prominent across the northern inland waters and near the
western Strait of Juan de Fuca, where small craft advisories remain
in effect until later this afternoon. Seas are diminishing today,
with only a slight bump back to around 7 ft Sunday. Expect
increasing winds and building seas late Monday into Tuesday over the
outer coastal waters as a weak front approaches, but otherwise high
pressure generally in control through the forecast period. 12

&&

.HYDROLOGY...
Flooding is not expected over the next 7 days.

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Small Craft Advisory until 2 PM PST this afternoon 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 Point Grenville To Cape Shoalwater
     10 To 60 Nm-Coastal Waters From Point Grenville To Cape
     Shoalwater Out 10 Nm-Grays Harbor Bar-West Entrance U.S.
     Waters Strait Of Juan De Fuca.

     Small Craft Advisory until 4 PM PST this afternoon for East
     Entrance U.S. Waters Strait Of Juan De Fuca-Northern
     Inland Waters Including The San Juan Islands.

&&

$$