803  
FNUS75 KBYZ 041211  
FWSBYZ  
 
SPOT FORECAST FOR MILLER CREEK-CUSTER...BLM  
NATIONAL WEATHER SERVICE BILLINGS MT  
611 AM MDT FRI JUL 4 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON JULY 04.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
INCREASING CLOUDS THIS AFTERNOON WITH SCATTERED SHOWERS AND  
THUNDERSTORMS DEVELOPING AS EARLY AS 2PM. RH VALUES WILL HOLD IN  
THE MID 30S TODAY WITH TEMPERATURES IN THE UPPER 80S AND FAIRLY  
LIGHT (5 TO 10 MPH) SOUTHWEST WINDS, TURNING NORTHEAST THIS  
AFTERNOON BETWEEN 11AM AND 2PM. ERRATIC WIND GUSTS UP TO 45 MPH  
CAN BE EXPECTED NEAR THUNDERSTORMS TODAY. CHANCE OF THUNDERSTORMS  
CONTINUES THROUGH ABOUT 10PM, WITH A CHANCE FOR SHOWERS LINGERING  
INTO THE OVERNIGHT HOURS. WINDS REMAIN NORTHEASTERLY IN THE 5 TO  
10 MPH RANGE TONIGHT. THERE IS A CHANCE THAT RIDGETOP WINDS GET A  
BIT GUSTY (18-24MPH) LATE TONIGHT THROUGH SUNRISE SATURDAY. EXPECT  
STRONG RH RECOVERIES TONIGHT. CHAMBERS  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY IN THE MORNING BECOMING MOSTLY CLOUDY  
IN THE AFTERNOON. CHANCE OF SHOWERS AND ISOLATED  
THUNDERSTORMS IN THE AFTERNOON.  
CWR.................10 PERCENT.  
CHANCE OF LIGHTNING.25 PERCENT.  
MAX TEMPERATURE.....85-89.  
MIN HUMIDITY........35-39 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH SHIFTING TO THE NORTHEAST  
IN THE AFTERNOON. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.  
RIDGETOP...........SOUTHWEST AROUND 10 MPH, SHIFTING TO THE NORTHEAST  
IN THE AFTERNOON.  
MIXING HEIGHT.......500 FT AGL EARLY IN THE MORNING INCREASING TO  
8000 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH, SHIFTING TO THE NORTHEAST IN THE  
AFTERNOON.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED THUNDERSTORMS IN THE EVENING. CHANCE  
OF SHOWERS THROUGH THE NIGHT. ISOLATED  
THUNDERSTORMS OVERNIGHT.  
CWR.................25 PERCENT.  
CHANCE OF LIGHTNING.35 PERCENT.  
MIN TEMPERATURE.....61-65.  
MAX HUMIDITY........82-86 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTHEAST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
RIDGETOP...........NORTHEAST WINDS 10 TO 15 MPH.  
MIXING HEIGHT.......8000 FT AGL EARLY IN THE EVENING DECREASING TO  
400 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....NORTHEAST AROUND 12 MPH.  
 

 
FORECASTER...CHAMBERS  
REQUESTED BY...HANNAH  
TYPE OF REQUEST...WILDFIRE  
.TAG 2517294.0/BYZ  
.DELDT 07/04/25  
.FORMATTERVERSION 2.0.0  
.EMAIL MTMCC@FIRENET.GOV  
 
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