Federal Way, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

996
FXUS66 KSEW 260515
AFDSEW

Area Forecast Discussion
National Weather Service Seattle WA
1015 PM PDT Mon May 25 2026

.SYNOPSIS...
An approaching upper level low will allow for showers
to continue off and on this evening and tonight. Unsettled and
showery conditions will continue Tuesday and Wednesday before high
pressure rebuilds later in the week for a return to dry and warm
conditions.

&&

.SHORT TERM /TONIGHT THROUGH WEDNESDAY NIGHT/...
The front responsible for earlier stratiform rains finds itself
along the Cascades as of around 8 PM PDT this evening. In its wake
are some lingering showers over portions of W WA this evening out
ahead of the parent upper level low. This feature can easily be
spotted on latest satellite imagery well off the WA coast and slowly
sinking southward. Inherited forecast suggests the prospect of some
isolated thunderstorms into the early evening, but given how nothing
of this sort has materialized throughout the day, difficult to
imagine anything getting started now...even with a few peeks of sun
breaking through here and there. 18

Expect this front to move eastward with post frontal showers in
its wake for the remainder of the Memorial Day evening.
Unseasonably large waves have reached the coastal waters this
evening, with significant wave heights offshore reaching 17 ft
this evening. These large waves will continue to move through
the waters into Tuesday, and a High Surf Advisory remains in
effect.

Conditions will remain unsettled into Tuesday with an unstable
air mass. Can expect scattered showers throughout most of the
region with a slight chance for thunderstorms once again, but
locations have been trimmed back, so the most likely locations
to see any sort of isolated thunder is areas south of the Sound
(mainly Lewis county) during the afternoon and evening hours.
Conditions remain the same into Wednesday, with isolated chances
of thunder possible for all areas of western Washington. High
temps will warm into the low 70s on Wednesday.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
Ensemble guidance shows split flow regime which slowly
transitions into weak high pressure building back into the
region midweek. Temperatures will warm on Thursday into the
upper 70s. Guidance then suggests weak troughing over the area
later into the week and into the weekend which will cool
temperatures down into the low 60s and may bring some showers
into the mountains.

Very long period swell looks to also arrive to the coast on
Thursday, which will pose a bigger threat for significant wave
runup on coastal beaches as well as the potential for minor
erosion.

&&

.AVIATION...
Expect cigs to gradually continue to lower, but remain VFR
through the evening hours. Cigs and visibilities may temporarily
drop to MVFR at times through this evening in any steadier
rain, but expect more widespread MVFR ceilings to develop across
the area overnight into Tuesday morning. Southerly winds
generally persist at 8-12 kt this afternoon and have been gusty
to 25-30 kt for terminals from KPAE northward. Gusts to 20-25 kt
will still be possible for central and south Sound terminals as
the front moves through. Expect winds to subside again tonight
into early Tuesday. Winds will then switch to the north between
16-18Z Tuesday and persist between 4-7 kt.

KSEA...Expect predominantly VFR cigs to persist through
tonight, with a lowering towards MVFR expected into Tuesday
morning. Southwest winds persist at 8-12 kt this afternoon and
could be gusty to 20-25 kt at times into this evening.
Southwesterly winds will ease tonight into the overnight period
and transition to the north at 3-7 kt between 16-18Z.

&&

.MARINE...
Winds will ease in the wake of the front tonight into early
Tuesday. Meanwhile, seas remain 13 to 18 ft over the coastal
waters. Seas will slowly subside from their peak during the day
Tuesday, but look to remain around 10 ft through much of the
week.

High pressure will quickly rebuild into the coastal waters on
Tuesday, allowing for winds to transition to more
north/northwesterly by Tuesday afternoon. SCA northwesterly wind
gusts are expected at times through much of the week for the
outer coastal waters. Additional systems may move across the
waters late in the week, bringing additional rounds of building
seas and increasing onshore flow. Onshore flow looks to
gradually increase Thursday through late week, with SCA winds
(to gale gusts) expected along the Strait late Thursday into
Friday. An even stronger push on Friday then looks to bring more
widespread gales to the central and east Strait.

With the transition back to northwesterly winds, steep seas will
also return to the coastal waters late Tuesday into Wednesday as
the predominant wave group`s period becomes 10 seconds. The
arrival of a 7-10 ft long period swell with a period of 15-18
seconds on Thursday will help build combined seas back to around
13 ft. Seas will then slowly subside again towards 10 ft Friday
into the weekend.

14/12

&&

.HYDROLOGY...
The daily hydrology discussion has ended until the start of the
next rainy season; it will only be updated during this time as
needed.

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...High Surf Advisory until noon PDT Tuesday for Grays Harbor
     County Coast-Northern Washington Coast.

PZ...Small Craft Advisory until 11 AM PDT Tuesday 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-Grays Harbor Bar.

     Small Craft Advisory until 5 AM PDT Tuesday for West Entrance
     U.S. Waters Strait Of Juan De Fuca.

&&

$$