189  
FNUS75 KBOI 221000  
FWSBOI  
 
SPOT FORECAST FOR CZ PILES-BRUSH...USFS  
NATIONAL WEATHER SERVICE BOISE ID  
400 AM MDT WED OCT 22 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0600 MDT ON OCTOBER 22.  
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.  
   
..WARM AND DRY THROUGH FRIDAY
 
 
   
DISCUSSION
 
 
HIGH PRESSURE WILL BUILD INTO THE REGION THROUGH FRIDAY, BRINGING  
A WARMING AND DRYING TREND. WINDS WILL BE SOUTHERLY TODAY WITH  
SLIGHT INCREASES IN THE AFTERNOON AND VERY LOW VENTILATION  
OVERNIGHT INTO THE MORNING. BREEZY WINDS WILL INCREASE ON FRIDAY  
AHEAD OF A STRONG SYSTEM THIS WEEKEND. RAIN AND COOLER  
TEMPERATURES WILL MOVE IN ON SATURDAY WITH SNOW ABOVE 5500 FEET  
LATE SUNDAY.  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....55 TO 60.  
MIN HUMIDITY........32 TO 37 PERCENT.  
CWR.................0 PERCENT.  
WIND - 20 FOOT......SOUTH AROUND 5 MPH.  
MIXING HEIGHT.......2500 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.  
VENTILATION INDEX...375 FAIR.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
MIN TEMPERATURE.....34 TO 39.  
MAX HUMIDITY........68 TO 73 PERCENT.  
CWR.................0 PERCENT.  
WIND - 20 FOOT......LESS THAN 3 MPH IN THE EVENING BECOMING  
NORTHWEST AROUND 3 MPH OVERNIGHT.  
MIXING HEIGHT.......300 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 2 MPH.  
VENTILATION INDEX...6 POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....55 TO 60.  
MIN HUMIDITY........37 TO 42 PERCENT.  
CWR.................0 PERCENT.  
WIND - 20 FOOT......NORTHWEST AROUND 4 MPH IN THE MORNING BECOMING LESS  
THAN 3 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......4500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.  
VENTILATION INDEX...225 FAIR.  
 

 
FORECASTER...ADAMS  
REQUESTED BY...JONATHAN MILLER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2523705.5/BOI  
.DELDT 10/22/25  
.FORMATTERVERSION 2.0.0  
.EMAIL JONATHAN.MILLER@USDA.GOV  
 
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