055  
FNUS75 KBYZ 252035  
FWSBYZ  
 
SPOT FORECAST FOR POMPEYS PILLAR RX...BLM  
NATIONAL WEATHER SERVICE BILLINGS MT  
235 PM MDT TUE MAR 25 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 MDT ON MARCH 26.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION  
 
TOMORROW AND THURSDAY WILL SEE WELL ABOVE AVERAGE TEMPERATURES.  
THURSDAY EVENING WILL SEE SCATTERED SHOWERS AND THUNDERSTORMS WITH A  
25% CHANCE OF RAIN AND A 5% CHANCE OF LIGHTNING. A WETTING RAIN IS  
NOT EXPECTED. WINDS WILL BE LIGHT THROUGHOUT THE PERIOD WITH  
MINRH VALUES IN THE LOW TO MID 20S. TORGERSON  
   
WEDNESDAY  
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....72-76.  
MIN HUMIDITY........22-26 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......LIGHT WINDS.  
MIXING HEIGHT.......INCREASING TO 6800 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....WEST 8 TO 14 MPH.  
 
TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........52 39 38 36 27 26 26 30 40 43  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0  
TEMP............42 47 53 58 63 68 71 72 72 74  
RH..............75 67 57 47 40 33 30 26 25 24  
20 FT WIND DIR..W W W W W W W W NW N  
20 FT WIND SPD..3 4 5 6 6 5 4 3 2 2  
20 FT WIND GUST.6 7 8 8 8 8 6 6 5 5  
   
WEDNESDAY NIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....39-43.  
MAX HUMIDITY........77-81 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......LIGHT WINDS.  
MIXING HEIGHT.......DECREASING TO 600 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....NORTH AROUND 8 MPH SHIFTING TO THE SOUTH AROUND  
6 MPH EARLY IN THE MORNING.  
 
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........46 39 38 39 27 29 29 29 29 24 24 24  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............72 68 64 58 55 53 51 49 47 45 43 42  
RH..............27 33 41 47 53 58 62 65 68 71 75 78  
20 FT WIND DIR..NE NE E E E E E E E E E E  
20 FT WIND SPD..2 2 3 3 3 3 3 3 3 1 1 1  
20 FT WIND GUST.4 4 5 6 6 5 5 5 5 4 4 4  
   
THURSDAY  
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....76-80.  
MIN HUMIDITY........22-26 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......LIGHT WINDS.  
MIXING HEIGHT.......INCREASING TO 4900 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH SHIFTING TO THE WEST 10  
TO 15 MPH IN THE AFTERNOON.  
 
TIME (MDT) 6 AM 9 AM NOON 3 PM  
SKY (%).........39 34 43 54  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
CHC OF LTNG (%).0 0 0 0  
TEMP............41 47 68 76  
RH..............79 66 32 24  
20 FT WIND......W 1G2 SW 2G4 SW 3G6 SW 5G10  
 
 
FORECASTER...LESTER/TORGERSON  
REQUESTED BY...ROBERT GRIFFIN  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2507761.0/BYZ  
.DELDT 03/25/25  
.FORMATTERVERSION 2.0.0  
.EMAIL RMGRIFFIN@BLM.GOV,DDAY@BLM.GOV,IWALD@BLM.GOV  
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