086
FNUS75 KMSO 181146
FWSMSO
SPOT FORECAST FOR GINNY MTN RX
NATIONAL WEATHER SERVICE MISSOULA MT
446 AM MST TUE NOV 18 2025
FORECAST IS BASED ON IGNITION TIME OF 0700 MST ON NOVEMBER 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A WIND SHIFT FROM SOUTHWEST TO NORTHWEST IS
EXPECTED BETWEEN NOON AND 2 PM MST. WIND GUSTS ARE EXPECTED TO
REMAIN BELOW 15 MPH. THE WESTERLY BREEZE SHOULD HELP WITH
DISPERSION UNTIL 5-6PM MST WHEN THE INVERSION STARTS TO DEVELOP.
VERTICAL DILUTION SEEMS RATHER WEAK TODAY AND WEDNESDAY WITH THE
MIXING HEIGHTS BETWEEN 2000 AND 2500 FEET AGL. HORIZONTAL
DISPERSION WILL BE POOR ON WEDNESDAY WITH WEAK WINDS.
TODAY
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE MORNING.
* CWR (> 0.10 INCH)...10 PERCENT.
* MAX TEMPERATURE.....46-48.
* MIN HUMIDITY........65-72 PERCENT.
* WIND (20 FT)........VARIABLE 1-3 MPH BECOMING NORTHWEST 5 TO 8
MPH WITH GUSTS TO 10 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......2300 FT AGL.
* MIXING WINDS........SOUTHWEST 8 MPH BECOMING NORTHWEST 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE FOR A SHOWER.
* CWR (> 0.10 INCH)...10 PERCENT.
* MIN TEMPERATURE.....31-34.
* MAX HUMIDITY........81-86 PERCENT.
* WIND (20 FT)........VARIABLE 1-3 MPH.
* MIXING HEIGHT.......500 FT AGL.
* MIXING WINDS........NORTHWEST 5 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
WEDNESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* CWR (> 0.10 INCH)...0 PERCENT.
* MAX TEMPERATURE.....44-47.
* MIN HUMIDITY........55-60 PERCENT.
* WIND (20 FT)........VARIABLE 1-3 MPH.
* MIXING HEIGHT.......2500 FT AGL.
* MIXING WINDS........EAST 5 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
FORECASTER...NOBLE
REQUESTED BY...THEODEN JOHNSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2525845.1/MSO
.DELDT 11/18/25
.FORMATTERVERSION 2.0.0
.EMAIL THEODEN.M.JOHNSON@USDA.GOV,DANIEL.SULLIVAN@USDA.GOV,MAX.HARRISON@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page