There was brief high wind in the northwest interior.
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The episode as NWS SEW wrote it up.
There was brief high wind in the northwest interior.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Seattle, WA wrote its last area forecast discussion before the first event at Nov 26, 9:54 AM PST, 27 minutes earlier.
Area Forecast Discussion
National Weather Service Seattle WA
954 AM PST Mon Nov 26 2018
.SYNOPSIS...A strong Pacific storm will bring locally heavy rain
and high winds to portions of Western Washington through tonight.
Heavy rain in the Olympics and portions of the Rain and wind will
ease Tuesday behind a cold front. Pass temperatures should
moderate later today with the freezing rain threat ending in the
passes. Cool and unsettled pattern will prevail the rest of this
week.
&&
.SHORT TERM...Warm air advection ahead of a strong front still
well offshore is causing snow levels to raise, with mostly rain
reported at the base of most ski areas and passes. Easterly cross
Cascade gradient is expected to peak close to midday around -11 mb
which could still pull in some cooler air near the summits of
Snoqualmie and Stevens this morning. However, southerly winds
should become more southwesterly at 850 mb this afternoon which
should mix out remaining cold air which is already marginal for
freezing rain. The winter weather advisory will go until noon, and
will check on pass obs before deciding on expiring or extending
the advisory.
South to southeasterly winds are picking up as expected. Virtually
all models show a meso low northeast of the Olympics deepening
through midday before gradually easing. Winds are already solidly
at wind advisory criteria with gusts to 50 mph so far this
morning. Models all agree that winds will pick up further as the
meso low gradient peaks midday, which should produce some high
winds across Admiralty Inlet and areas adjacent the east entrance
to the Strait. Strong winds will spread further north with high
winds up to 40 mph with gusts to 60 mph possible across the north
interior later today through tonight. Similar winds are possible
along the coast which should ease behind the front sometime near
or after midnight tonight.
Strong southwest flow of 40 to 50+ kt will produce heaviest
rainfall over favored slopes of the Olympics. This will result in
flooding on the Skokomish river, and possibly other rivers running
off the Olympics. Heaviest rain will shift to the north Cascades
tonight ahead of the cold front. Several inches of rain could
drive some rivers running off the Cascades to flood stage by this
evening. See the hydrology section below and latest flood bulletin
for current watches and warnings, in addition to details on the
flood threat.
Rain tapers to showers Tuesday and remains breezy around Puget
Sound behind the front. Onshore flow and showery weather will
persist through mid week. The air mass will become somewhat
unstable, especially Tuesday afternoon near the coast. An isolated
lightning strike is possible. This is already handled in the
current forecast.
Mercer
.LONG TERM...Previous discussion...A cool and unsettled pattern
will prevail over the region during this period. It looks like a
more organized system may impact the area late this week. At this
time, it doesn't look like it will be anything major. A few of the
medium range solutions were hinting that snow levels will lower
to near sea level late this weekend. Possible lowland snow? Oh no!
Wouldn't count on this, yet, though. The models do change, quite
often.
&&
.AVIATION...Strong and moist southwesterly flow aloft will continue
today and tonight as a frontal system moves through the area. Strong
surface winds are likely over the north interior and on the coast as
the pressure gradient tightens considerably. VFR conditions will
become MVFR as rain continues. Strong southerly winds aloft will
give areas of LLWS around Puget Sound, where the surface winds are
not strong.
KSEA...VFR conditions this morning will persist over the next few
hours and lower to MVFR levels in rain. Heaviest rains are expected
this afternoon and evening. Southeast wind 10-15 kt. Southerly winds
aloft will increase to around 45 kt at 2000 ft. CHB
&&
.MARINE...A strong frontal system will move through the area today.
Gale force winds are occurring or likely over most waters today and
tonight. Puget Sound will probably have small craft advisory
strength winds tonight and Tuesday as the pressure gradient becomes
more southerly. Winds will ease Tuesday night and especially
Wednesday. The next weather system will move into Oregon around
Thursday, giving light northerly winds over Washington waters. CHB
&&
.HYDROLOGY...Current QPF in the Skokomish River basin, which is
near 5 inches average during the 36-hour period ending 4 PM PST,
Tuesday. This will be more than enough to drive the Skokomish to
flood stage. A Flood Watch remains in effect for the Skokomish
River in Mason County.
There is also enough QPF in the far north Cascades, 5+ inches
over the highest terrain, and 1-2 inches in lower terrain, to
bring the Nooksack River to flood stage. A Flood Watch remains in
effect for the Nooksack River in Whatcom County.
Models have shown good run-to-run consistency with heavy rain over
those two areas, but much less rain over the central and south
Cascades. The Bogachiel and Stillaguamish Rivers are forecast to
rise significantly but not reach flood stage. Other rivers will also
rise, but are forecast to not get close to flood stage. Burke/05
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...Winter Weather Advisory until noon PST today for Cascades of
Snohomish and King Counties.
Flood Watch from 7 PM PST this evening through Tuesday evening
for Cascades of Whatcom and Skagit Counties-Hood Canal Area-
Lower Chehalis Valley Area-Olympics-Western Whatcom County.
High Wind Warning until 4 AM PST Tuesday for Admiralty Inlet
Area-Central Coast-North Coast-San Juan County-Western
Skagit County-Western Whatcom County.
PZ...Small Craft Advisory for rough bar until 4 PM PST Tuesday for
Grays Harbor Bar.
Gale Warning until midnight PST tonight 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.
Gale Warning until 4 AM PST Tuesday for Admiralty Inlet-East
Entrance U.S. Waters Strait Of Juan De Fuca-Northern Inland
Waters Including The San Juan Islands.
Small Craft Advisory from 4 PM this afternoon to 4 AM PST
Tuesday for West Entrance U.S. Waters Strait Of Juan De
Fuca.
Gale Warning until 4 PM PST this afternoon for West Entrance
U.S. Waters Strait Of Juan De Fuca.
Small Craft Advisory until 4 AM PST Tuesday for Central U.S.
Waters Strait Of Juan De Fuca.
Small Craft Advisory until 4 PM PST Tuesday for Puget Sound and
Hood Canal.
&&
www.weather.gov/seattleThe national radar mosaic for the moment the first event began.
2 high wind. Local standard time, as filed.
Lopez Island recorded sustained wind of 44 mph.
Ferndale gusted to 58 mph, and KBLI gusted to 62 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2018Every state in 2018This day in weather historyWarnings in Washington, November 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 791154, 791153.