519
FNUS75 KBYZ 172315
FWSBYZ
SPOT FORECAST FOR WEST FORK...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
515 PM MDT WED SEP 17 2025
FORECAST IS BASED ON FORECAST START TIME OF 1800 MDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
EXPECT MOSTLY CLEAR SKIES WITH NO PRECIPITATION THROUGH THE
FORECAST PERIOD. WIND TONIGHT WILL BE LIGHT AND NORTHERLY,
POSSIBLY JUST TERRAIN DRIVEN AT TIMES. WINDS START OUT LIGHT AND
VARIABLE THURSDAY BEFORE TURNING WESTERLY AND PICKING UP A LITTLE
IN THE AFTERNOON...BUT STILL UNDER 15 MPH. WINDS TURN MORE SOUTH
TO SOUTHWESTERLY THURSDAY NIGHT THROUGH FRIDAY, BUT STILL UNDER 15
MPH. BT
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....32-36.
MAX HUMIDITY........86-90 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH WINDS 5 TO 7 MPH IN THE EVENING BECOMING
LIGHT.
RIDGETOP...........NORTHWEST AROUND 6-10 MPH.
MIXING HEIGHT.......5500 FT AGL EARLY IN THE EVENING DECREASING TO
600 FT AGL OVERNIGHT.
TRANSPORT WINDS.....NORTH AROUND 5 MPH.
THURSDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....63-67.
MIN HUMIDITY........25-31 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5-9 MPH.
RIDGETOP...........WEST AROUND 6-12 MPH.
MIXING HEIGHT.......700 FT AGL EARLY IN THE MORNING INCREASING TO
8000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 8 MPH.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....35-39.
MAX HUMIDITY........68-72 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS UP TO 6 MPH.
RIDGETOP...........WEST AROUND 5 MPH.
MIXING HEIGHT.......6800 FT AGL EARLY IN THE EVENING DECREASING TO
500 FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 6 MPH.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....64-68.
MIN HUMIDITY........24-28 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS UP TO 7 MPH.
RIDGETOP...........WEST AROUND 5 MPH.
MIXING HEIGHT.......100 FT AGL EARLY IN THE MORNING INCREASING TO
9100 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 9 MPH.
FORECASTER...TESAR
REQUESTED BY...ZACHARIAH SACHS
TYPE OF REQUEST...WILDFIRE
.TAG 2520413.28/BYZ
.DELDT 09/17/25
.FORMATTERVERSION 2.0.0
.EMAIL ZACHARIAH.SACHS@USDA.GOV,ZACHARIAH.SACHS@FIRENET.GOV
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