319
FNUS76 KOTX 110858
FWSOTX

Spot Forecast for Ulm Creek...USFS
National Weather Service Spokane WA
158 AM PDT Thu Sep 11 2025

Forecast is based on forecast start time of 0200 PDT on September 11.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

A moist airmass will remain over the fires with good to excellent
overnight recoveries tonight and Thursday. Afternoon and evening
thunderstorms are anticipated both days, with best chances on Thursday.
With these thunderstorms, gusty outflow winds up to 25 mph are possible.
Wetting rains anticipated on Thursday night. General winds will shift
to the west tomorrow morning.

.TODAY...

Sky/weather.........Partly cloudy. Slight chance of rain showers in
                    the morning and afternoon. Chance of thunderstorms
in the afternoon. Haze in the afternoon.
CWR.................5 percent.
Chance of lightning.30 percent.
Max temperature.....69-73.
Min humidity........43-47 percent.
Wind (20 ft)........East winds 2-4 mph shifting to the north around
1400. Gusty and erratic winds expected near
thunderstorms in the afternoon.
Mixing height.......Rising to 8000 ft AGL with inversion breaking
around 1100.
Transport winds.....Northeast up to 6 mph shifting to the north around
1400.

.TONIGHT...

Sky/weather.........Mostly cloudy. Haze in the evening. Chance of thunderstorms
in the evening and rain showers through the night. Highest
rain chances 1800-2000 with up to a quarter inch possible.
CWR.................35 percent.
Chance of lightning.30 percent.
Min temperature.....54-56.
Max humidity........86-90 percent.
Wind (20 ft)........North 2-4 mph shifting to the south around 1700.
Gusty and erratic winds expected near thunderstorms
in the evening.
Mixing height.......Falling to near surface around 2300.
Transport winds.....North up to 6 mph shifting to the east southeast
around 1700.

.FRIDAY...

Sky/weather.........Mostly sunny. Chance of rain showers and slight
                    chance of thunderstorms through the day.
CWR.................5 percent.
Chance of lightning.25 percent.
Max temperature.....66-70.
Min humidity........66-70 percent.
Wind (20 ft)........Southeast 2-5 mph shifting to the west around 0700.
Gusty and erratic winds expected near thunderstorms.
Mixing height.......Rising to 4000 ft AGL with inversion breaking
around 0800.
Transport winds.....East up to 7 mph shifting to the west around 0700.

$$
Forecaster...AS/DN
Requested by...OPSC(T)
Type of request...WILDFIRE
.TAG 2521355.7/OTX
.DELDT 09/11/25
.FormatterVersion 2.0.0
.EMAIL matthew_derosier@firenet.gov,victoria.payne@usda.gov,maggie.penamora@usda.gov,megan.primmer@usda.gov