320  
FNUS75 KTFX 311318  
FWSTFX  
 
SPOT FORECAST FOR GOGUEN HAND PILES...ROCKY MOUNTAIN RANGER DISTRICT, MT-HLF  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
718 AM MDT MON MAR 31 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 MDT ON MARCH 31.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
DAYTIME INSTABILITY WILL DEVELOP ALONG THE SOUTHERN ROCKY MOUNTAIN  
FRONT LATE THIS MORNING OR EARLY AFTERNOON, RESULTING IN AN  
OPPORTUNITY FOR A MIX OF RAIN AND SNOW SHOWERS, WITH A FEW  
THUNDERSTORMS IN THE CARDS AS WELL. THIS OPPORTUNITY LASTS THROUGH  
EARLY EVENING BEFORE PRECIPITATION BECOMES MORE STRATIFORM IN  
NATURE TONIGHT INTO TUESDAY. THE PROBABILITY FOR 2 INCHES OF SNOW  
AT THE PRESCRIBED BURN AREA THROUGH TUESDAY NIGHT IS ROUGHLY 55%,  
WITH A ROUGHLY 35% CHANCE FOR 4 INCHES OVER THE SAME TIMEFRAME.  
THE TIMEFRAME MOST FAVORABLE FOR SNOW ACCUMULATION IS LATE TONIGHT  
INTO TUESDAY.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). RAIN AND SNOW  
SHOWERS LIKELY IN THE AFTERNOON WITH A SLIGHT  
CHANCE FOR A THUNDERSTORM IN THE AFTERNOON.  
CWR.................10 PERCENT.  
CHANCE OF THUNDER...15.  
MAX TEMPERATURE.....48-53.  
MIN HUMIDITY........52-57 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS AROUND 5 MPH.GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......4500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH SHIFTING TO THE WEST 15  
TO 20 MPH IN THE AFTERNOON.  
 
TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........77 78 78 74 65 67 67 78 71 69  
WEATHER COV..... SCH CHC CHC CHC LKY LKY CHC  
WEATHER TYPE.... SN RS RS RS RS RS RS  
TSTM COV........ SCH SCH SCH SCH SCH  
CWR.............10 10 10 10 10 10 10 10 10 10  
TEMP............29 31 37 41 45 47 47 48 49 47  
RH..............93 85 63 56 53 53 54 55 55 56  
20 FT WIND DIR..SW SW SW SW SW SW SW W W W  
20 FT WIND SPD..5 5 5 5 5 5 5 5 5 5  
20 FT WIND GUST.10 15 15 15 15 15 15 15 15 15  
MIX HGT (KFT)...1.0 1.0 1.5 2.5 3.5 4.5 4.5 4.5 4.0 4.0  
TRANSP WIND DIR.S SW SW SW SW SW SW SW W W  
TRANSP WIND SPD.10 10 10 15 15 20 20 20 15 15  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SNOW SHOWERS  
LIKELY WITH POSSIBLE SHOWERS AND THUNDERSTORMS  
IN THE EVENING, THEN CHANCE OF SNOW OVERNIGHT.  
CWR.................15 PERCENT INCREASING TO 35 PERCENT OVERNIGHT.  
CHANCE OF THUNDER...15.  
MIN TEMPERATURE.....27-32.  
MAX HUMIDITY........68-73 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS EARLY IN THE  
EVENING.  
MIXING HEIGHT.......1000 FT AGL.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH SHIFTING TO THE NORTHWEST  
AROUND 20 MPH AFTER 3 AM.  
 
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........65 69 80 76 78 72 75 87 89 91 88 83  
WEATHER COV.....CHC CHC LKY CHC CHC SCH CHC CHC CHC CHC CHC CHC  
WEATHER TYPE....RS RS SW SN SN SN SN SN SN SN SN SN  
TSTM COV........SCH SCH SCH  
CWR.............20 20 20 20 20 20 40 40 40 40 40 40  
TEMP............46 44 38 36 35 34 34 34 34 33 33 31  
RH..............74 75 76 73 73 73 69 68 68 68 68 68  
20 FT WIND DIR..W SW W W W W W W W W W W  
20 FT WIND SPD..5 5 5 5 5 5 5 5 10 10 10 10  
20 FT WIND GUST.15 15 15 10 15 15 15 15 15 20 20 20  
MIX HGT (KFT)...3.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0  
TRANSP WIND DIR.W W NW W W W W W W W W NW  
TRANSP WIND SPD.10 10 10 10 10 10 15 15 15 15 20 20  
   
TUESDAY
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT). SNOW LIKELY.  
CWR.................5 PERCENT INCREASING TO 45 PERCENT IN THE  
AFTERNOON.  
CHANCE OF THUNDER...0.  
MAX TEMPERATURE.....41-46.  
MIN HUMIDITY........49-54 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 30  
MPH.  
MIXING HEIGHT.......3500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.  
 
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........83 87 88 88 95 92 88 88 88 84 84 84  
WEATHER COV.....LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY  
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN SN  
TSTM COV........  
CWR.............10 10 10 10 10 10 50 50 50 50 50 50  
TEMP............31 31 30 33 37 39 40 41 42 42 42 41  
RH..............62 62 61 61 65 62 61 62 63 63 64 65  
20 FT WIND DIR..W W W W W W W W W NW NW NW  
20 FT WIND SPD..10 10 15 15 15 15 15 15 15 15 15 15  
20 FT WIND GUST.25 25 25 25 30 30 30 30 30 30 30 30  
MIX HGT (KFT)...1.0 2.0 2.0 2.0 2.5 3.0 3.0 3.0 3.0 3.5 3.5 3.0  
TRANSP WIND DIR.W W W NW NW NW NW NW NW NW NW NW  
TRANSP WIND SPD.20 20 20 20 20 20 20 20 20 20 20 20  
 

 
FORECASTER...MCDOWELL  
REQUESTED BY...MATTHEW BAKER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2508354.0/TFX  
.DELDT 03/31/25  
.FORMATTERVERSION 2.0.0  
.EMAIL MATTHEW.BAKER2@USDA.GOV, TFX.OPS@NOAA.GOV  
 
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