FNUS76 KSEW 222307
FWSSEW

Spot Forecast for Prairie Mountain...DNR
National Weather Service Seattle WA
407 PM PDT Sat Aug 22 2026

Forecast is based on forecast start time of 1700 PDT on August 22. 
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.

...RED FLAG WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING...

.DISCUSSION...Scattered showers possible through early Sunday
afternoon as an upper level trough moves over the incident.
Although the thunderstorm threat will diminish tonight, gusty and
erratic winds from nearby cells will still be a threat this 
evening. Mild temperatures and excellent overnight RH recoveries 
through Sunday. Drier and warmer conditions return on Monday. 

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent). Chance of rain 
                    showers and slight chance of thunderstorms in 
                    the evening, then rain likely overnight. 
CWR.................0 percent. 
Chance of lightning.18 percent. 
Min temperature.....Around 56. 
Max humidity........100 percent. 
Wind (20 ft)........Light winds. Gusty and erratic winds expected 
                    near thunderstorms in the evening. 
Mixing height.......600 ft AGL. 
Transport winds.....Southwest around 5 mph. 
Rainfall amount.....0.01 inches. 
Ceiling (KFT).......7.3 decreasing to 2.2 overnight. 
Visibility..........10. 

.SUNDAY...

Sky/weather.........Mostly cloudy (75-85 percent). Chance of rain 
                    through the day. 
CWR.................8 percent. 
Chance of lightning.8 percent. 
Max temperature.....Around 64. 
Min humidity........80 percent. 
Wind (20 ft)........Light winds. 
Mixing height.......2000 ft AGL. 
Transport winds.....West around 6 mph. 
Rainfall amount.....0.02 inches. 
Ceiling (KFT).......1.3 increasing to 2.2 in the afternoon. 
Visibility..........6 increasing to 10 in the afternoon.

.SUNDAY NIGHT...

Sky/weather.........Partly cloudy (20-30 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....Around 54. 
Max humidity........80 percent. 
Wind (20 ft)........Light winds. 
Mixing height.......200 ft AGL. 
Transport winds.....Northeast around 4 mph. 
Rainfall amount.....0.00 inches. 
Ceiling (KFT).......3.5 increasing to 25 overnight. 
Visibility..........10. 

.MONDAY...

Sky/weather.........Sunny (0-10 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....Around 78. 
Min humidity........54 percent. 
Wind (20 ft)........East winds around 5 mph shifting to the 
                    northwest in the afternoon. 
Mixing height.......3000 ft AGL. 
Transport winds.....West around 5 mph. 
Rainfall amount.....0.00 inches. 
Ceiling (KFT).......25. 
Visibility..........10. 

$$
Forecaster...Gonzalez-Fuentes
Requested by...Dylan Van Pelt Field Operations
Type of request...WILDFIRE
.TAG 2619640.10/SEW
.DELDT 08/22/26
.FormatterVersion 2.0.0
.EMAIL dylan.vanpelt@dnr.wa.gov,henry.mcmurray@dnr.wa.gov,iris.banks@dnr.wa.gov