089
FNUS76 KOTX 020359
FWSOTX

Spot Forecast for Ulm Creek...USFS
National Weather Service Spokane WA
859 PM PDT Mon Sep 1 2025

Forecast is based on forecast start time of 2100 PDT on September 01.
If conditions become unrepresentative...contact the National Weather
Service.

...HEAT ADVISORY IN EFFECT UNTIL 8 PM PDT THURSDAY...

.DISCUSSION...

High pressure will be over the fire through the week delivering
hot temperatures and dry conditions.  Unstable conditions will be
present the next few afternoons with deep mixing heights.  Overnight
recoveries will be poor.  Winds will be will be light and terrain driven
through Wednesday.  A moderate push of easterly winds is expected to
arrive late Thursday into Friday.


.REST OF TONIGHT...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....66.
Max humidity........40 percent.
Wind (20 ft)........Downslope/downvalley 2 to 5 mph.
Mixing height.......Near surface.
Transport winds.....East around 7 mph.

.TUESDAY...

Sky/weather.........Sunny. Haze in the afternoon.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....93.
Min humidity........14 percent.
Wind (20 ft)........East winds 1 to 4 mph in the morning becoming
                    upslope/upvalley 3 to 7 mph in the afternoon.
Mixing height.......10000 ft AGL in the afternoon. Shallow inversions lifting
                    after 0900.
Transport winds.....East around 8 mph shifting to the northwest
                    around 6 mph in the afternoon.

.TUESDAY NIGHT...

Sky/weather.........Mostly clear. Haze.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....66.
Max humidity........39 percent.
Wind (20 ft)........Downslope/downvalley 1 to 4 mph.
Mixing height.......8000 ft AGL falling to near surface.
Transport winds.....Northeast 5 to 6 mph.

.WEDNESDAY...

Sky/weather.........Sunny. Haze in the morning.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....93.
Min humidity........15 percent.
Wind (20 ft)........East winds 1 to 3 mph in the morning becoming
                    upslope/upvalley 3 to 7 mph in the afternoon.
Mixing height.......11000 ft AGL in the afternoon.
Transport winds.....Northeast around 6 mph shifting to the
                    northwest around 7 mph in the afternoon.

$$
Forecaster...SB
Requested by...Crystal Taylor
Type of request...WILDFIRE
.TAG 2521089.0/OTX
.DELDT 09/01/25
.FormatterVersion 2.0.0
.EMAIL idcdc@firenet.gov