779
FNUS75 KMSO 132318
FWSMSO
SPOT FORECAST FOR WILLIAMS CRK. FIRE
NATIONAL WEATHER SERVICE MISSOULA MT
518 PM MDT MON JUL 13 2026
FORECAST IS BASED ON FORECAST START TIME OF 1700 MDT ON JULY 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
GENERAL WINDS WILL REMAIN WEAK TODAY INTO TUESDAY
MORNING. THE PRIMARY PERIOD TO WATCH FOR A WIND ARRIVES TUESDAY
EVENING/SUNSET TIMEFRAME, AS MODEL GUIDANCE SUGGESTS A SOUTH-
SOUTHEAST WIND SHIFT WITH GUST POTENTIAL NEAR 30 MPH FROM ANY
SHOWERS IN THE VICINITY.
CLOUD COVER WILL BECOME WIDESPREAD TONIGHT INTO TUESDAY, AS
MONSOON MOISTURE BEGINS TO INCREASE IN THE MID-UPPER LEVELS OF THE
ATMOSPHERE. CHANCES FOR SHOWERS AND THUNDERSTORMS INCREASE
TUESDAY EVENING/NIGHT INTO WEDNESDAY, WITH WETTING RAIN (0.10
INCHES) PROBABILITIES INCREASING TO 25% BY WEDNESDAY AFTERNOON.
HUMIDITY WILL TREND HIGHER THESE DAYS AS WELL.
REST OF TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MAX TEMPERATURE.....78-83.
* MIN HUMIDITY........20-25 PERCENT.
* WIND (20 FT)........WEST-SOUTHWEST 2-5 MPH WITH GUSTS NEAR 10
MPH.
* MIXING HEIGHT.......7000 FT AGL.
* MIXING WINDS........SOUTHWEST 15 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MIN TEMPERATURE.....54-59.
* MAX HUMIDITY........41-46 PERCENT.
* WIND (20 FT)........SOUTH-SOUTHWEST 3-6 MPH.
* MIXING HEIGHT.......5000 FT AGL DECREASING TO 500 FT AGL EARLY IN
THE EVENING.
* MIXING WINDS........SOUTHWEST 5 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
TUESDAY
* SKY/WEATHER.........MOST CLOUDY. CHANCE OF RAIN SHOWERS BY MID-
LATE AFTERNOON.
* CWR (> 0.10 INCH)...10 PERCENT.
* CHANCE LIGHTNING....5 PERCENT.
* MAX TEMPERATURE.....77-82.
* MIN HUMIDITY........30-35 PERCENT.
* WIND (20 FT)........SOUTHEAST 4-6 MPH SHIFTING TO THE SOUTHWEST
5-9 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......2500 FT AGL INCREASING TO 5500 FT AGL IN THE
AFTERNOON.
* MIXING WINDS........SOUTHEAST 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
FORECASTER...LUKINBEAL
REQUESTED BY...PETER JACOBSON
TYPE OF REQUEST...WILDFIRE
.TAG 2617324.0/MSO
.DELDT 07/13/26
.FORMATTERVERSION 2.0.0
.EMAIL PETER.A.JACOBSON@USDA.GOV
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