Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
501
FXUS66 KSEW 301628
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
928 AM PDT Thu Jul 30 2026
.SYNOPSIS...Dry and warm conditions continue today across
Western Washington, with even warmer temperatures Friday. The
next disturbance shifts over the area late Friday through
Saturday, bringing cooler and cloudy conditions along with
showers and isolated thunderstorms. High pressure returns early
next week, bringing back dry and warmer conditions.
&&
.SHORT TERM /TODAY THROUGH SATURDAY/...Dry and steadily warmer
temperatures will continue across western Washington through the
next several days as low pressure remains off the B.C. coast
and gradually rising heights across the region. Modest onshore
flow continues in the lower levels of the atmosphere each of
these days, maintaining some degree of clouds each morning that
give way to mostly sunny skies in the afternoon. Temperatures
through the interior climb through into the 70s today, with cool
nights limiting the HeatRisk to minor levels. Even with the
warmest day of the week on Friday, as temperatures reach the
lower 80s, will maintain only a minor risk of heat-releated
illness.
Ensemble guidance continues to favor a shift in the pattern
late Friday into Saturday across the region, as the next upper
low shifts inland. This will usher the arrival of a more solid
cloud deck, cooler temperatures, and even some rainfall chances.
These rain chances will be highest along the coast and in the
Olympics, but a potential Puget Sound Convergence Zone behind
the system will also be another focus for shower chances. Gusty
southerly wind gusts also develop across much of the lowlands,
with gusts to 20-25 mph expected. There`s also around a 15-20%
chance for an isolated thunderstorm or two, especially closer to
the North Cascades
&&
.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...Any lingering
showers likely come to end Sunday as the upper low departs the
region and heights again begin to rise. High pressure builds
across the interior during the early portions of next week with
steadily warmer temperatures. Expect highs in the interior to
again reach the 80s with a few spots approaching 90 Tuesday.
This will largely maintain Minor HeatRisk for the early part of
next week, though chances increase to around 40-50% Tuesday and
Wednesday for some areas of Moderate HeatRisk for the Seattle
area south through Lewis County.
&&
.AVIATION...Southwesterly flow aloft with weak low level
onshore flow into Friday. Areas of MVFR ceilings west of Puget
Sound until 18z otherwise mostly clear skies.
KSEA...Mostly clear skies through Friday morning. Variable wind
5 knots or less becoming southwest 4 to 8 knots around 15z,
west southwest 4 to 8 knots around 22z and northerly 4 to 8
knots after 04z. Felton
&&
.MARINE...High pressure over the waters through Friday. Another
weak system will reach the waters Friday night and Saturday.
High pressure will rebuild over the coastal waters Sunday and
remain in place through Monday.
Gale force winds are likely in the Central and Eastern Strait
of Juan de Fuca late Saturday afternoon into Saturday evening.
Seas mostly in the 3 to 5 foot range over the inner coastal
waters and 4 to 6 feet over the outer coastal waters into the
first part of next week. Felton
&&
.FIRE WEATHER...Next elevated fire weather conditions Friday
with warmer and drier weather with minimum relative humidity
values approaching 30 percent in the Black Hills and SW Interior
lowlands, SE Puget Sound lowlands, and Cascade valleys. A
system Saturday will ease fire weather concerns with wetting
rains north coast and North Cascades. Slight chance, less than
15 percent, of thunderstorms in the North Cascades near the
Canadian border. Another round of elevated fire weather concerns
beginning Monday and continuing through the week with above
normal temperatures and low late day minimum relative
humidities. Felton
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...None.
&&
$$
NWS SEW Office Area Forecast Discussion