FNUS75 KBOI 241115

FWSBOI



Spot Forecast for CZ Piles...USFS

National Weather Service Boise ID

515 AM MDT Fri Oct 24 2025



Forecast is based on ignition time of 0721 MDT on October 24. 

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.



...DRY AND MILD TODAY. WETTING RAIN AND COLDER SATURDAY...



.DISCUSSION...

Upper ridge will continue dry, mild weather today but mostly cloudy

sky.  Cold front from the Gulf of Alaska storm will pass through

the fire area around noon Saturday.  Rain showers, possibly mixed

with snow, beginning around midnight tonight, then steady rain all

day Saturday with amount .50 to .60 inch. A 20 percent chance of

a thunderstorm late Saturday. Improved ventilation today with

southerly transport wind near 20 mph, then excellent ventilation 

Saturday with southerly transport wind 25 mph.



.REST OF TODAY...



Sky/weather.........Mostly cloudy. 

Max temperature.....58 to 63. 

Min humidity........29 to 34 percent. 

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

Wind - 20 foot......South 3 to 6 mph. Gusts up to 20 mph in the 

                    afternoon. 

Mixing height.......2000 ft AGL. 

Transport winds.....South around 20 mph. 

Ventilation Index...400 fair. 



.TONIGHT...



Sky/weather.........Rain showers, overnight. Rain possibly mixed with 

                    snow.  Precipitation amount near .15 inch. Chance of

                    showers 80 percent. 

Min temperature.....37 to 42. 

Max humidity........95 to 100 percent. 

CWR.................40 percent. 

Wind - 20 foot......South 3 to 7 mph. Gusts up to 14 mph overnight. 

Mixing height.......700 ft AGL. 

Transport winds.....South around 15 mph. 

Ventilation Index...105 poor. 



.SATURDAY...



Sky/weather.........Rain. Chance of rain near 100 percent. Rain

                    amount .50 to .60 inch.  A 20 percent chance

                    of a thunderstorm after 5 PM MDT.

Max temperature.....44 to 49. 

Min humidity........85 to 90 percent. 

CWR.................90 percent. 

Wind - 20 foot......South around 7 mph with gusts to around 18 mph. 

Mixing height.......3000 ft AGL. 

Transport winds.....South around 25 mph. 

Ventilation Index...750 excellent. 



$$

Forecaster...Colin

Requested by...Jonathan Miller

Type of request...PRESCRIBED

.TAG 2524156.2/BOI

.DELDT 10/24/25

.FormatterVersion 2.0.0

.EMAIL jonathan.miller@usda.gov