Everett, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

414
FXUS66 KSEW 112250
AFDSEW

Area Forecast Discussion
National Weather Service Seattle WA
350 PM PDT Fri Apr 11 2025

.SYNOPSIS...Showers will continue through Saturday as a slow moving
trough pushes across the region. High pressure will settle over
Western Washington on Sunday drying out conditions. Dry conditions
expected to persist late into next week.

&&

.SHORT TERM /TONIGHT THROUGH MONDAY/...Radar imagery shows
scattered light showers (lowland rain and mountain snow) over
Western Washington this afternoon as an upper level trough continues
to slowly move eastward over the region. Shower activity will
continue into Saturday. Rain totals through Saturday range from 0.01-
0.20 (higher amounts in the foothills) and snow amounts in the
passes range from 1.00-2.50 inches (localized higher amounts in the
mountain peaks). The upper level trough will exit the region on
Saturday. Conditions will dry out on Sunday as an upper level ridge
begins to slowly settle over the Pacific Northwest, with the ridge
axis moving onshore Sunday afternoon. With lingering moisture, light
winds, and mostly clear skies during the overnight hours of Saturday
and Sunday, patchy frost may develop as temperatures decrease into
the low-to-mid 30s across the southern interior foothills and
valleys. As a result, a Frost Advisory has been issued for the
overnight hours of Saturday and Sunday. Upper level ridging will
gradually weaken on Monday night as a shortwave trough makes its
way towards Washington.

Daytime temperatures will gradually warm through Monday. High
temperatures on Saturday will be in the low-to-mid 50s and by
Monday, high temperatures will in the the 60s. A few locations may
even reach 70 degrees. Overnight temperatures will gradually
decrease into the weekend. Low temperatures on Saturday and Sunday
will in the low-to-mid 30s to low 40s, with the coldest temperatures
along the southern interior. Low temperatures will rebound on Monday
into the upper 30s to low 40s.

.LONG TERM /TUESDAY THROUGH FRIDAY/...A slow moving shortwave trough
will move through Western Washington on Tuesday and exit the region
late Wednesday night. The latest deterministic models are in a
general agreement that this shortwave will bring little to no
precipitation to Washington. NBM PoPs at this time are 10% or less,
with the highest PoPs along the North and Central Cascades. Rather,
the majority of the precipitation will be centralized to British
Columbia.

WPC cluster analysis is in agreement that upper level ridging will
begin to build offshore Tuesday through Wednesday behind the
shortwave trough. The upper level ridge will begin to move towards
the coast on Thursday. However, there is some disagreement among
ensemble members on terms of intensity and ridge axis location.
Around 54% of members have the ridge axis well inland, while 46%
members have the ridge axis still offshore on Thursday. Depending
on what scenario plays out, it will determine when the next
system will arrive. On Friday around 42% of members favor the
ridge axis well into the Rockies, and a trough pushing eastward
towards Washington. However, at this time the majority of members
(58%) favor the ridge axis over Washington.

Daytime temperatures early in the week will be in the 60s and
gradually warm up into Friday to temperatures in the mid-to-upper
60s, with some locations possibly reaching 70 degrees. Overnight
temperatures will generally be in the 40s.

29

&&

.AVIATION...VFR across western Washington this afternoon with
ceilings ranging between 3000-5000 ft and lingering convergence zone
showers over the Puget Sound terminals. Winds have shifted westerly
or northerly this afternoon at 5-10 kt, becoming light and shifting
back to the south by early Saturday. Convergence zone showers will
linger overnight over terminals along the Puget Sound, with
potential for brief MVFR ceilings in shower activity. Elsewhere,
terminals are expected to stay VFR overnight with increasing mid
clouds, with the exception near KOLM where clouds are likely to
scatter out by mid morning Saturday. High pressure will continue to
build into the region Saturday, with dry conditions outside of
lingering convergence zone showers that will shift over the Cascades
during the day Saturday.

KSEA...VFR this afternoon with winds shifting to the NW. Winds will
continue to veer towards the north this evening at 8-11 kt before
easing and becoming S overnight. Convergence zone showers will
continue overnight and are favored to drift south over the terminal
generally between 06z- 18z with potential for brief MVFR ceilings.
Conditions will rebound to VFR by the afternoon Saturday with W/NW
winds once again around 5-8 kt.

15

&&

.MARINE...High pressure will continue to build into the region
today, with calmer conditions settling into the region. A weak
disturbance riding the periphery of the ridge will push into the
region tonight into Saturday, promoting onshore flow and another
push of westerly SCA winds through the Strait of Juan de Fuca, with
gusts to around 25 kt into early Saturday. Another push through the
Strait on Sunday as high pressure amplifies will generate another
round of SCA winds. Combined seas have slowly eased below 10 feet,
and seas will continue to subside towards 6-8 ft by later tonight.

High pressure will then persist over the coastal waters through
much of the weekend, with seas primarily ranging between 4-6 ft.
A thermal trough then looks to extend northward along the Washington
coast late Sunday into Monday and could allow for winds to briefly
turn offshore early Monday. A weakening frontal system may approach
the area waters early next week, but does not look to bring much
impact to the area at this time outside of a slight uptick in
winds and seas building back towards 6-8 ft. High pressure then
looks to build back into the region behind the system and persist
into midweek. Seas look to approach 8-10 ft Tuesday night into
Wednesday.

14/15

&&

.HYDROLOGY...No river flooding is expected over the next 7 days.

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...Frost Advisory from midnight tonight to 8 AM PDT Saturday for
     Foothills and Valleys of Thurston and Lewis Counties-
     Lowlands of Lewis and Southern Thurston Counties-Middle
     Chehalis River Valley-Willapa and Black Hills.

     Frost Advisory from midnight Saturday night to 8 AM PDT Sunday
     for Foothills and Valleys of Thurston and Lewis Counties-
     Lowlands of Lewis and Southern Thurston Counties-Middle
     Chehalis River Valley-Willapa and Black Hills.

PZ...Small Craft Advisory from 2 PM to 11 PM PDT Saturday for Central
     U.S. Waters Strait Of Juan De Fuca-West Entrance U.S.
     Waters Strait Of Juan De Fuca.

     Small Craft Advisory until 5 AM PDT Saturday for Central U.S.
     Waters Strait Of Juan De Fuca-East Entrance U.S. Waters
     Strait Of Juan De Fuca.

&&

$$