Hunts Point, Washington Weather Forecast Discussion

802
FXUS66 KSEW 071637
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
937 AM PDT Sun Sep 7 2025
.SYNOPSIS...An upper level low will remain offshore through
Monday, before pushing inland Monday night into Tuesday. This
system will maintain cooler conditions and chances for showers
and thunderstorms at times across western Washington through the
first part of the week. A brief period of drier conditions will be
possible the latter half of the week, before another system brings
increasing rain chances to the region again by the weekend.
&&
.SHORT TERM /TODAY THROUGH TUESDAY/...The latest forecast remains
on track with no updates this morning. While thunderstorm
activity will remain possible through the early morning hours,
expect coverage to mostly be limited to the Cascades.
Overall, expect cool and unsettled conditions to continue across
western Washington throughout the short term as an upper level low
offshore deepens today and moves inland over the region Monday
night into Tuesday. The greatest chance for thunderstorm development
across the region today are across the Olympics and Cascades,
where guidance generally hints at a 10-20 percent chance of
convection developing by this afternoon and evening. The exception
remains the North Cascades, where there is a 25-30 percent chance
of development. Chances for convection look to become more
confined to the Cascades by Monday, however could become more
widespread again by Tuesday as as the upper level low pushes
inland south of the area. Overall, expect conditions to remain
cool across the region, with afternoon high temperatures in the
60s along the coast and low to mid 70s across the interior today
and Monday. Tuesday looks to be the coolest day within the short
term with afternoon highs only expected to get into the upper 60s
for most spots across the interior.
.LONG TERM /WEDNESDAY THROUGH SATURDAY/...The upper level low
looks to linger across the region through Friday, before ejecting
northeastward out of the area over the weekend. Model guidance
does continue to show upper level ridging starting to build in
along the coast Thursday and Friday. Should this come to fruition,
this would bring a brief drying trend to portions of the lowlands,
though some wrap around moisture from the upper low may bring
some showers and thunderstorms to portions of the Cascades during
this time. Temperatures will climb a few degrees across the interior,
with highs expected to top out in the mid 70s. Unsettled weather
looks to return for the weekend, however, as the next system moves
in from the Pacific.
&&
.AVIATION...A broad upper trough remains centered offshore with
an upper ridge over the Rockies producing light southerly flow aloft
over Western Washington. The air mass is moist west of the Cascades
with multiple cloud layers and a few showers. Areas of IFR/MVFR
ceilings will persist into midday then gradually lift away from
coastal areas. Any isolated thunderstorm activity later today will
likely be limited to the Cascade crest and points eastward. A period
of VFR ceilings is expected across interior areas late this
afternoon into the evening before deteriorating back to low MVFR or
occasional IFR once again on Monday morning.
KSEA...MVFR ceilings are expected to hang around into early
afternoon before lifting to low end VFR for a period mid-afternoon
into the evening. Shower activity is expected to be limited today.
Ceilings will fall back to low MVFR or tempo IFR late tonight into
Monday morning. Surface winds will be S/SW generally under 8 knots.
27
&&
.MARINE...A weak surface ridge over the coastal and offshore waters
will be replaced by a weak low today. This general pattern will
persist through the first half of this week before a stronger
surface ridge rebuilds offshore around mid-week.
Seas 2 to 4 ft through at least Tuesday night, increasing to 4 to 6
ft by Wednesday.
18/27
&&
.FIRE WEATHER...Thunderstorm chances will linger across the
mountains today and gradually become more confined to the Cascades
on Monday as additional disturbances push up and across the
region from the low offshore. The main hazards with any
thunderstorm development remain gusty erratic winds, brief heavy
downpours, and frequent lightning. Tuesday may bring another round
of more widespread showers and Cascade thunderstorm chances as
the low moves onshore over the region. Outside of thunderstorm
activity, the continued trend of cooler and cloudier conditions
and increased moisture across the region should act to alleviate
fire weather impacts as the week progresses.
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...None.
&&
$$

NWS SEW Office Area Forecast Discussion