644
FNUS75 KBYZ 152324
FWSBYZ
SPOT FORECAST FOR WEST FORK...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
524 PM MDT MON SEP 15 2025
FORECAST IS BASED ON FORECAST START TIME OF 1800 MDT ON SEPTEMBER 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS OR CONCERNS WITH
THIS FORECAST.
DISCUSSION
SLOW-MOVING WEATHER SYSTEM WILL BRING OCCASIONAL SHOWERS AND A
FEW EMBEDDED WEAK THUNDERSTORMS TONIGHT THROUGH TUESDAY. PRECIP
AMOUNTS BETWEEN 0.10-0.30" ARE EXPECTED (40% CHANCE OF A WETTING
RAIN). LOOK FOR DRYING AND WARMING STARTING WEDNESDAY AND
CONTINUING THROUGH THE END OF THE WEEK. WINDS OVER THE NEXT FEW
DAYS WILL REMAIN ON THE LIGHT SIDE, BUT STRONGER WINDS ARE
POSSIBLE BY THE WEEKEND AND THIS IS SOMETHING TO MONITOR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. NUMEROUS SHOWERS. ISOLATED
THUNDERSTORMS IN THE EVENING. ERRATIC WIND
GUSTS POSSIBLE NEAR STORMS.
CWR.................25 PERCENT.
CHANCE OF LIGHTNING.20 PERCENT.
MIN TEMPERATURE.....33-36.
MAX HUMIDITY........95-100 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH 3-7 MPH.
RIDGETOP...........NORTH 5-10 MPH.
MIXING HEIGHT.......DECREASING TO 500 FT AGL OVERNIGHT.
TRANSPORT WINDS.....NORTH 5 MPH.
TUESDAY
SKY/WEATHER.........PARTLY SUNNY WITH SCATTERED SHOWERS. ISOLATED
THUNDERSTORMS IN THE AFTERNOON. ERRATIC WIND
GUSTS POSSIBLE NEAR STORMS.
CWR.................20 PERCENT.
CHANCE OF LIGHTNING.20 PERCENT.
MAX TEMPERATURE.....52-56.
MIN HUMIDITY........60-65 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH 5-10 MPH.
RIDGETOP...........NORTH AROUND 10 MPH.
MIXING HEIGHT.......INCREASING TO 4000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTH 10 MPH.
TUESDAY NIGHT
SKY/WEATHER.........CLEARING.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....30-34.
MAX HUMIDITY........95-100 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......DOWNSLOPE/DOWNVALLEY 3-6 MPH.
RIDGETOP...........NORTHEAST 5-10 MPH.
MIXING HEIGHT.......DECREASING TO 400 FT AGL OVERNIGHT.
TRANSPORT WINDS.....NORTHEAST 5 MPH.
WEDNESDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....59-63.
MIN HUMIDITY........36-40 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT AND VARIABLE EARLY, THEN UPSLOPE/UPVALLEY
5-10 MPH.
RIDGETOP...........NORTHEAST AROUND 10 MPH.
MIXING HEIGHT.......INCREASING TO 7000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHEAST 10 MPH.
FORECAST DAYS 3 THROUGH 7
THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE MID 60S. NORTHWEST
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. WEST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.
SOUTHWEST WINDS 10 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE UPPER 30S.
HIGHS IN THE LOWER 60S. SOUTHWEST WINDS 15 TO 25 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S.
FORECASTER...LESTER
REQUESTED BY...ZACHARIAH SACHS
TYPE OF REQUEST...WILDFIRE
.TAG 2520413.26/BYZ
.DELDT 09/15/25
.FORMATTERVERSION 2.0.0
.EMAIL ZACHARIAH.SACHS@FIRENET.GOV,ZACHARIAH.SACHS@USDA.GOV
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