718
FNUS76 KSEW 232317
FWSSEW

Spot Forecast for Prairie Mountain...DNR
National Weather Service Seattle WA
417 PM PDT Sun Aug 23 2026

Forecast is based on forecast start time of 1700 PDT on August 24.
If conditions become unrepresentative, contact the National Weather
Service.

Please contact our office at (206) 526-6095, if you have questions
or concerns with this forecast.

.DISCUSSION...Dry conditions are in the forecast throughout the
period. Low-level onshore flow will switch offshore on Monday as
an upper-level ridge builds into the region in concert with a
surface thermal trough. As a result, warmer temperatures and poor
RH recoveries are expected.

.MONDAY...

Sky/weather.........Sunny (10-20 percent). Patchy smoke.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 79.
Min humidity........35 to 40 percent.
Wind (20 ft)........Light winds.
Mixing height.......1000 ft AGL.
Transport winds.....Northwest around 5 mph.
Rainfall amount.....0.00 inches.
Ceiling (KFT).......25.
Visibility..........6.

.MONDAY NIGHT...

Sky/weather.........Mostly clear (20-30 percent). Smoke.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....Around 61.
Max humidity........58 percent.
Wind (20 ft)........Light winds becoming east 5 to 10 mph overnight.
Mixing height.......200 ft AGL.
Transport winds.....East around 10 mph.
Rainfall amount.....0.00 inches.
Ceiling (KFT).......25.
Visibility..........6.

.TUESDAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 83.
Min humidity........30 to 35 percent.
Wind (20 ft)........East winds 5 to 10 mph shifting to the northwest
                    around 5 mph in the afternoon.
Mixing height.......5000 ft AGL.
Transport winds.....Southeast around 10 mph.
Rainfall amount.....0.00 inches.
Ceiling (KFT).......1 then rising to 25 around mid-morning.
Visibility..........6.

$$
Forecaster...McMillian
Requested by...Dylan Van Pelt Field Operations
Type of request...WILDFIRE
.TAG 2619640.11/SEW
.DELDT 08/23/26
.FormatterVersion 2.0.0
.EMAIL iris.banks@dnr.wa.gov,dylan.vanpelt@dnr.wa.gov,henry.mcmurray@dnr.wa.gov