051 
FNUS76 KOTX 092042
FWSOTX

Spot Forecast for Ulm Creek...USFS
National Weather Service Spokane WA
142 PM PDT Tue Sep 9 2025

Forecast is based on forecast start time of 0600 PDT on September 10. 
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Similar temperatures and relative humidity is expected on Wednesday as
to what occurred on Tuesday. A moist airmass with warm and unstable 
afternoon conditions will remain over the fire for Wednesday, and 
Thursday. This will bring an increased chance for showers and 
thunderstorms. In addition to rain, gusty outflow winds up to 30 mph 
should be expected near storms.

.WEDNESDAY...

Sky/weather.........Mostly sunny. Haze. 20 percent chance of showers 
                    and thunderstorms. 
CWR.................20 percent. 
Chance of lightning.20 percent. 
Max temperature.....72-74. 
Min humidity........37-41 percent. 
Wind (20 ft)........Downslope/downvalley 3 to 6 mph becoming east 
                    around 1000 hours Gusty and erratic winds expected 
                    near thunderstorms. 
Mixing height.......6000 ft AGL. 
Transport winds.....East 7 to 8 mph. 

.WEDNESDAY NIGHT...

Sky/weather.........Mostly cloudy. Chance of rain showers and slight 
                    chance of thunderstorms through the night. 
CWR.................20 percent. 
Chance of lightning.20 percent. 
Min temperature.....55-57. 
Max humidity........70-80 percent. 
Wind (20 ft)........Downslope/downvalley 3 to 7 mph. Gusty and erratic winds 
                    expected near thunderstorms. 
Mixing height.......Near surface. 
Transport winds.....East 6 to 8 mph. 

.THURSDAY...

Sky/weather.........Partly sunny. 15 percent chance of thunderstorms in 
                    the morning. 30 percent chance of thunderstorms 
                    in the afternoon. 
CWR.................30 percent. 
Chance of lightning.30 percent. 
Max temperature.....66-68. 
Min humidity........54-57 percent. 
Wind (20 ft)........West winds 3 to 6 mph. Gusty and erratic winds expected 
                    near thunderstorms.
Mixing height.......4500 ft AGL. 
Transport winds.....Northeast around 6 mph shifting to the 
                    northwest around 7 mph in the afternoon. 

$$
Forecaster...DB
Requested by...OPSC(T)
Type of request...WILDFIRE
.TAG 2521355.5/OTX
.DELDT 09/09/25
.FormatterVersion 2.0.0
.EMAIL victoria.payne@usda.gov,maggie.penamora@usda.gov,matthew_derosier@firenet.gov,megan.primmer@usda.gov