611
FXUS66 KSEW 290402
AFDSEW

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

.SYNOPSIS...A partly cloudy but generally 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 /TONIGHT THROUGH SUNDAY NIGHT/...High clouds
continue this evening across Western Washington. Localized
patchy fog may develop tonight in any clearing, especially
around Olympia and Tacoma. Otherwise, brief wind gusts of 20 to
30 MPH will be possible into early Saturday around the Cascade
gaps, particularly near North Bend. No major forecast updates
this evening, previous discussion below:

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 FRIDAY/...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...Northwest winds aloft will continue through Saturday
with ridging offshore and an embedded, weak trough moving
through the Pacific Northwest later Saturday. VFR conditions
with high clouds for most this evening. Localized MVFR cigs
exist with continued stratus around KOLM. Predominantly VFR cigs
expected into Saturday, however, stratus may become a bit more
widespread for a brief period Saturday morning around Puget
Sound. Confidence is low in this occurring. Otherwise, patchy
fog may develop tonight, especially in the south Puget Sound,
with any clearing in the high clouds. A weak weather system
will move through later Saturday, but precipitation is generally
expected to remain limited, and light overall. E/NE surface
winds continue through Saturday.

KSEA...VFR conditions with high clouds this evening. There
remains a low probability, around 15-20%, of MVFR cigs Saturday
morning (mainly between 12-16z), otherwise mid and high clouds
continue. E/NE surface winds through Saturday, ranging 5-10 kts.
JD

&&

.MARINE...East to northeast winds will continue through Sunday.
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. JD/12

&&

.HYDROLOGY...River flooding is not expected over the next 7 days.

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...None.

&&

$$