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FNUS76 KOTX 042300
FWSOTX

Spot Forecast for Lower Sugarloaf Fire...SA Gray Team
National Weather Service Spokane WA
400 PM PDT Thu Sep 4 2025

Forecast is based on forecast start time of 0600 PDT on September 05. 
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

A thick layer of smoke is expected to move over the fire area on Friday 
cutting down on the instability potential as fuels have increased
shading.  This will also allow for cooler temperatures and higher
relative humidity compared to the past few days.  Winds will be out
of the east on Friday, shifting to northwest early Friday evening. On 
Saturday a weather system will send in some increased mid level 
moisture and instability with a 20 percent chance of showers and
thunderstorms.  The chance of showers and thunderstorms increases to 
40 percent on Sunday. Gusty outflow winds are the main concern with
any showers or thunderstorms that develop.

.FRIDAY...

Sky/weather.........Mostly sunny. Extensive smoke and haze.
CWR.................0 percent. 
Chance of lightning.5 percent. 
Max temperature.....76-85. 
Min humidity........22-28 percent. 
Wind (20 ft)........East 5 to 10 mph. 
Mixing height.......Near the surface through 1000-1100 increasing 
                    to 5000 ft AGL in the afternoon. 
Transport winds.....Southeast 5 to 10 mph. 

.FRIDAY NIGHT...

Sky/weather.........Partly cloudy. Extensive smoke and haze. 
CWR.................0 percent. 
Chance of lightning.5 percent. 
Min temperature.....62-66. 
Max humidity........40-50 percent. 
Wind (20 ft)........Northwest 4 to 10 mph.  
Mixing height.......Falling to near surface by 1930. 
Transport winds.....Northwest 5 to 10 mph. 

.SATURDAY...

Sky/weather.........Partly cloudy. Extensive smoke and haze. A 20
                    percent chance of showers and thunderstorms in
                    the afternoon.
CWR.................5 percent. 
Chance of lightning.20 percent. 
Max temperature.....70-78. 
Min humidity........25-30 percent. 
Wind (20 ft)........Northwest winds around 5 mph shifting to the 
                    upslope/upvalley 4 to 7 mph in the afternoon. Gusty and erratic 
                    winds expected near thunderstorms in the 
                    afternoon. 
Mixing height.......Near surface through 1000-1100 increasing to
                    5000 ft AGL in the afternoon. 
Transport winds.....Northwest around 5 mph shifting to the east in 
                    the afternoon. 

$$
Forecaster...JW
Requested by...Jessica Ilse
Type of request...WILDFIRE
.TAG 2521342.0/OTX
.DELDT 09/04/25
.FormatterVersion 2.0.0
.EMAIL 2025.lowersugarloaf.situation@firenet.gov,tessa.chicks@firenet.gov