823
FNUS75 KBYZ 221934
FWSBYZ
SPOT FORECAST FOR FIRST CREEK...BLM
NATIONAL WEATHER SERVICE BILLINGS MT
134 PM MDT TUE JUL 22 2025
FORECAST IS BASED ON FORECAST START TIME OF 1300 MDT ON JULY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
LOW CLOUDS WILL GRADUALLY DIMINISH THIS AFTERNOON WITH CHANCES
FOR THUNDERSTORMS INCREASING AFTER 1600 MDT. BEST CHANCE FOR
THUNDERSTORMS IS BETWEEN 1600 THROUGH 2200 MDT, THOUGH CANNOT
RULE OUT AN ISOLATED SHOWER OR THUNDERSTORM AFTER 2200 MDT. STRONG TO
SEVERE THUNDERSTORMS ARE POSSIBLE THIS EVENING, WITH GUSTY AND ERRATIC WINDS
TO 65 MPH, LARGE HAIL AND HEAVY RAINFALL POSSIBLE. ISOLATED TO SCATTERED
SHOWERS AND THUNDERSTORMS ARE POSSIBLE ONCE AGAIN ON WEDNESDAY. OUTSIDE OF
THUNDERSTORMS, GENERALLY LIGHT NORTH TO NORTHEAST WINDS WILL PREVAIL WITH
RH REMAINING HIGH THROUGH WEDNESDAY.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER 1600 MDT.
CWR.................20 PERCENT.
CHANCE OF LIGHTNING.30 PERCENT.
MAX TEMPERATURE.....76-81.
MIN HUMIDITY........45-50 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHEAST WINDS 6 TO 12 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGETOP...........NORTHEAST 7 TO 14 MPH.
MIXING HEIGHT.......INCREASING TO 4400 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 10 MPH.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS
BEFORE 2200 MDT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS OVERNIGHT. SOME THUNDERSTORMS MAY BE
SEVERE IN THE EVENING.
CWR.................35 PERCENT.
CHANCE OF LIGHTNING.30 PERCENT.
MIN TEMPERATURE.....60-64.
MAX HUMIDITY........95-100 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH TO NORTHEAST WINDS 5 TO 10 MPH. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGETOP...........NORTHEAST 7 TO 14 MPH.
MIXING HEIGHT.......DECREASING TO 500 FT AGL OVERNIGHT.
TRANSPORT WINDS.....NORTH AROUND 12 MPH.
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING, THEN CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
CWR.................25 PERCENT.
CHANCE OF LIGHTNING.40 PERCENT.
MAX TEMPERATURE.....74-78.
MIN HUMIDITY........48-56 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH TO NORTHEAST WINDS 5 TO 10 MPH. GUSTY
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGETOP...........NORTH TO NORTHEAST 6 TO 12 MPH.
MIXING HEIGHT.......INCREASING TO 5300 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTH AROUND 12 MPH.
FORECASTER...PALMQUIST
REQUESTED BY...KELSEY
TYPE OF REQUEST...WILDFIRE
.TAG 2518423.0/BYZ
.DELDT 07/22/25
.FORMATTERVERSION 2.0.0
.EMAIL MTMCC@FIRENET.GOV
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