323
FNUS75 KMSO 181842
FWSMSO
SPOT FORECAST FOR BISON RANGE BR2F RX
NATIONAL WEATHER SERVICE MISSOULA MT
1242 PM MDT FRI SEP 18 2026
FORECAST IS BASED ON IGNITION TIME OF 1300 MDT ON SEPTEMBER 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
EXPECT HIGHS NEAR 70 DEGREES AND MINIMUM RHS IN THE
MID-40S TODAY AND SATURDAY. INCREASING CLOUDS ARE EXPECTED LATER
TODAY. WINDS WILL HAVE A NORTHERLY COMPONENT TODAY AND MORE OF A
NORTHEAST COMPONENT ON SATURDAY, BUT REMAINING UNDER 10 MPH. FOR
THIS PARTICULAR SITE, THERE WILL BE A WARMING AND DRYING TREND
THROUGH NEXT WEEK. THE NBM IS CURRENTLY HAVING A 5 TO 7 PERCENT
HIGH BIAS FOR AFTERNOON RH. ACCOUNTING FOR THAT, THE MINIMUM RHS
MONDAY THROUGH WEDNESDAY COULD RANGE 26 TO 34 PERCENT WITH HIGHS
IN THE MID-70S. THE WINDS RIGHT NOW LOOK TO REMAIN BELOW 14 MPH
DURING THAT PERIOD.
REST OF TODAY
* SKY/WEATHER.........PARTLY CLOUDY.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MAX TEMPERATURE.....69-72.
* MIN HUMIDITY........43-46 PERCENT.
* WIND (20 FT)........NORTHWEST 5-10 MPH.
* MIXING HEIGHT.......3500 FT AGL.
* MIXING WINDS........NORTH 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* CWR (> 0.10 INCH)...10 PERCENT.
* CHANCE LIGHTNING....20 PERCENT.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........72-77 PERCENT.
* WIND (20 FT)........SOUTHEAST 5-7 MPH.
* MIXING HEIGHT.......500 FT AGL.
* MIXING WINDS........SOUTH 5 MPH.
* PRECIP AMOUNT.......0.01 INCHES.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY, SLIGHT CHANCE FOR A SHOWER AT
DAYBREAK.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....5 PERCENT.
* MAX TEMPERATURE.....68-71.
* MIN HUMIDITY........44-47 PERCENT.
* WIND (20 FT)........NORTHEAST 2-6 MPH.
* MIXING HEIGHT.......3000 FT AGL INCREASING TO 4500 FT AGL LATE IN
THE AFTERNOON.
* MIXING WINDS........EAST 5 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
FORECASTER...NOBLE
REQUESTED BY...F60
TYPE OF REQUEST...PRESCRIBED
.TAG 2622093.1/MSO
.DELDT 09/18/26
.FORMATTERVERSION 2.0.0
.EMAIL JUSTIN.UNDERWOOD@CSKT.ORG
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