Marysville, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

911
FXUS66 KSEW 272158
AFDSEW

Area Forecast Discussion
National Weather Service Seattle WA
Issued by National Weather Service Portland OR
258 PM PDT Tue May 27 2025

.SYNOPSIS...An upper ridge will build across the Pacific
Northwest through Wednesday for dry, warmer weather. A frontal
system will move through on Thursday for cooler temperatures and a
chance for showers. Warmer, dry conditions return late in the
week through the weekend.

&&

.SHORT TERM /TONIGHT THROUGH FRIDAY/...A mild and mostly sunny
afternoon is well underway across Western Washington with
temperatures primarily in the upper 60s to lower 70s for most
areas (cooler for spots closer to the water). Expect the ridge to
remain firmly overheat into Wednesday with thermal low pressure
building north along the coast and then shifting inland early
tomorrow. The mild start and light offshore flow will bring
temperatures on Wednesday to the warmest of the season so far
across the interior. Expect highs in the 80s for Puget Sound
eastward, with a few 90 degree readings possible in the Cascade
valleys. This will correspond to Moderate (Orange) HeatRisk for
interior areas. In addition, the water remains rather cool, so
continue to be mindful if heading out on the water. Temperatures
along the coast will be cooler due to continued onshore flow.

A frontal system will then move towards Western Washington late
Wednesday, increasing onshore flow rapidly, allowing for cooling
temperatures into Thursday. In addition, the frontal system will
bring widespread rain as it pushes through. Amounts could be up to
around a quarter of an inch in the mountains and near the coast,
with less than a tenth in the interior. There`s also around a 15
percent chance of a thunderstorm near the Cascade crest in the
evening Wednesday as increased moisture and modest instability
combine. Temperatures on Thursday will be 15 to 20 degrees cooler
for the interior, with highs in the 60s. Precipitation will
quickly taper off later Thursday as an upper ridge once again
builds into the Pacific Northwest


.LONG TERM /SATURDAY THROUGH TUESDAY/...Dry conditions, with
warming temperatures, will return Friday with strong agreement in
the ensemble guidance supporting the return of an ridge to the
western U.S. This will bring temperatures back into the upper 70s
to around 80. Confidence decreases into the start of next week
with near to slightly above normal temperatures remaining favored.
While there are some ensemble solutions that have a deeper trough
entering the region, zonal flow or weak ridging remains most
likely. This could bring some showers back to the region, but
there`s not a particularly wet time period in the first part of
next week.

&&

.AVIATION...Upper level ridge east of the Cascades with southwesterly
flow aloft through Wednesday. Light offshore/northerly flow
becoming Wednesday/southerly. Variable high clouds into Wednesday
morning.

KSEA...VFR conditions with variable high clouds. North northwest
winds 6 to 8 knots becoming northeast 3 to 5 knots around 06z.
Onshore flow/southwesterly winds 4 to 6 knots will reach the
terminal around 15/16z.


&&

.MARINE...High pressure over area waters with a thermally
induced surface trough shifting northward along the coast tonight
and inland Wednesday. A front will move through the area Wednesday
night into Thursday followed by high pressure Thursday night and
Friday. Weak front approaching the waters Saturday.

Gale warning has been issued for the Central Strait of Juan de Fuca
for Wednesday afternoon and evening. Westerly winds will rapidly
increase Wednesday afternoon with sustained winds 20 to 30 knots and
frequent gusts to 35 knots. A small craft advisory has been issued
for the eastern strait. Expect another round of enhanced westerlies
in the Strait Thursday evening and again Saturday evening.

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Gale Warning from 2 PM to 11 PM PDT Wednesday for Central U.S.
     Waters Strait Of Juan De Fuca.

     Small Craft Advisory from 2 PM to 11 PM PDT Wednesday for East
     Entrance U.S. Waters Strait Of Juan De Fuca.

&&

$$