FNUS75 KBOI 271001

FWSBOI



Spot Forecast for Shirts piles Rx...Boise NF

National Weather Service Boise ID

401 AM MDT Mon Oct 27 2025



Forecast is based on ignition time of 0600 MDT on October 27. 

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.



...DRYING UNDER INCOMING UPPER LEVEL HIGH PRESSURE...



.DISCUSSION...

No more rain/snow this week as high pressure aloft comes inland 

from the Pacific.  However, the ridge will bring faster warming

aloft than in the valleys beginning Tuesday, causing a mild 

inversion and limiting mixing and ventilation near ground level.



.TODAY...



Sky/weather.........Mostly sunny. 

Max temperature.....31 to 38. 

Min humidity........63 to 68 percent. 

CWR.................0 percent. 

Wind - 20 foot......West 3 to 6 mph. 

Mixing height.......4000 ft AGL. 

Transport winds.....West around 10 mph. 

Ventilation Index...400 fair. 



.TONIGHT...



Sky/weather.........Mostly clear. 

Min temperature.....25 to 30. 

Max humidity........78 to 84 percent. 

CWR.................0 percent. 

Wind - 20 foot......Southeast around 5 mph. 

Mixing height.......100 ft AGL. 

Transport winds.....East around 5 mph. 

Ventilation Index...5 poor. 



.TUESDAY...



Sky/weather.........Sunny. 

Max temperature.....40 to 46. 

Min humidity........44 to 49 percent. 

CWR.................0 percent. 

Wind - 20 foot......Southeast around 5 mph. 

Mixing height.......2500 ft AGL. 

Transport winds.....South around 5 mph. 

Ventilation Index...125 poor. 



$$

Forecaster...Colin

Requested by...Chris Hightower

Type of request...PRESCRIBED

.TAG 2523836.4/BOI

.DELDT 10/27/25

.FormatterVersion 2.0.0

.EMAIL christopher.hightower@usda.gov,justin.yankey@usda.gov,William.Sanders2@usda.gov