218 
FNUS75 KBOI 230956
FWSBOI

Spot Forecast for West Lowman CC9...USFS
National Weather Service Boise ID
356 AM MDT Tue Sep 23 2025

Forecast is based on ignition time of 0600 MDT on September 23. 
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (208)334-9060, if you have questions
or concerns with this forecast.

...CLEAR SKY (EXCEPT SMOKY) AND DRY...

.DISCUSSION...
Upper level high pressure in eastern OR will bring warmer 
temps and continued clear sky through Wednesday, but will
also limit ventilation.  Surface high pressure in nw MT and
low pressure in western WA and OR will maintain northeast 
wind above the surface through Wednesday, except terrain-driven
at the surface. Smoke from wildfire in WA should decrease from
NE to SW this afternoon.

.TODAY...

Sky/weather.........Sunny. 
Max temperature.....67 to 76. 
Min humidity........21 to 26 percent. 
CWR.................0 percent. 
Wind - 20 foot......South around 5 mph. 
Mixing height.......4500 ft AGL. 
Transport winds.....Southeast around 5 mph. 
Ventilation Index...225 fair. 

.TONIGHT...

Sky/weather.........Mostly clear. 
Min temperature.....41 to 49. 
Max humidity........44 to 64 percent. 
CWR.................0 percent. 
Wind - 20 foot......Southeast 3 to 4 mph in the evening shifting to 
                    the northeast up to 5 mph overnight. 
Mixing height.......200 ft AGL. 
Transport winds.....East around 5 mph. 
Ventilation Index...10 poor. 

.WEDNESDAY...

Sky/weather.........Sunny. 
Max temperature.....71 to 81. 
Min humidity........18 to 23 percent. 
CWR.................0 percent. 
Wind - 20 foot......Southeast around 5 mph. 
Mixing height.......5000 ft AGL. 
Transport winds.....South around 5 mph. 
Ventilation Index...250 fair. 

$$
Forecaster...Colin
Requested by...FUELS TECH
Type of request...PRESCRIBED
.TAG 2522262.3/BOI
.DELDT 09/23/25
.FormatterVersion 2.0.0
.EMAIL ralph.lamb@usda.gov,hiram.rooper@usda.gov