454  
FNUS73 KUNR 041608  
FWSUNR  
 
SPOT FORECAST FOR RAT...USFS  
NATIONAL WEATHER SERVICE RAPID CITY SD  
908 AM MST THU DEC 4 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 MST ON DECEMBER 04.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
PARTLY SUNNY SKIES ARE EXPECTED TODAY, WITH DRY  
CONDITIONS FOR MUCH OF TODAY. THE NEXT SYSTEM MOVES IN THIS EVENING,  
BRINGING ANOTHER CHANCE FOR LIGHT SNOW OVER THE SPOT AREA. ONLY  
LIGHT AMOUNTS OF SNOW ARE EXPECTED IN THE BUSKALA RANCH AREA,  
WITH UP TO ONE HALF INCH FALLING BY EARLY FRIDAY MORNING. WINDS  
WILL GENERALLY REMAIN OUT OF THE WEST, BECOMING BREEZY OVERNIGHT  
WITH GUSTS AROUND 30 MPH AT RIDGETOPS FROM LATE EVENING THROUGH  
8AM FRIDAY MORNING.  
 
   
REST OF TODAY
 
 
SKY/WEATHER.........BECOMING PARTLY SUNNY (40-50 PERCENT). THEN,  
INCREASING CLOUDS THIS AFTERNOON.  
SLIGHT CHANCE OF SNOW LATE IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 27.  
MIN HUMIDITY........71 PERCENT.  
WIND (20 FT)........WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND  
25 MPH.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......1200 TO 1700 FT AGL.  
TRANSPORT WINDS.....WEST 30 TO 40 MPH.  
SMOKE DISPERSAL.....FAIR.  
 
TIME (MST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........60 53 40 34 29 29 32 40 47  
WEATHER COV..... SCH  
WEATHER TYPE.... SN  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0  
TEMP............23 25 26 26 26 26 24 22 20  
RH..............91 90 86 81 74 71 74 81 84  
20 FT WIND DIR..W W W W W W W W W  
20 FT WIND SPD..9 9 9 9 9 8 8 8 7  
20 FT WIND GUST.22 24 25 25 25 24 24 23 22  
MIX HGT (KFT)...1.2 1.5 1.7 1.7 1.7 1.6 1.3 0.7 0.5  
TRANSP WIND DIR.W W W W W W W W W  
TRANSP WIND SPD.28 32 37 37 35 33 31 30 30  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF  
SNOW EARLY IN THE EVENING, THEN CHANCE OF SNOW  
OVERNIGHT.  
MIN TEMPERATURE.....AROUND 17.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND  
30 MPH.  
CWR.................20 PERCENT.  
MIXING HEIGHT.......300 TO 500 FT AGL.  
TRANSPORT WINDS.....WEST 30 TO 40 MPH.  
SMOKE DISPERSAL.....POOR.  
 
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........64 76 82 80 75 83 83 83 84 82 82 83  
WEATHER COV.....SCH SCH CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC  
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN SN  
TSTM COV........  
CWR.............20 20 20 20 20 20 20 20 20 20 20 20  
TEMP............20 20 21 22 22 22 21 21 20 19 18 18  
RH..............84 88 88 88 92 100 100 100 100 100 100 100  
20 FT WIND DIR..W W W W W W W W W W W W  
20 FT WIND SPD..7 8 8 9 9 10 10 10 10 10 12 10  
20 FT WIND GUST.23 24 24 26 28 28 30 31 31 31 32 31  
MIX HGT (KFT)...0.5 0.4 0.4 0.4 0.4 0.3 0.4 0.5 0.5 0.5 0.5 0.5  
TRANSP WIND DIR.W W W W W W W NW NW NW NW NW  
TRANSP WIND SPD.29 29 30 31 33 35 35 36 36 36 36 35  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF SNOW  
IN THE MORNING, THEN SLIGHT CHANCE OF SNOW  
REST OF THE DAY.  
MAX TEMPERATURE.....AROUND 25.  
MIN HUMIDITY........92 PERCENT.  
WIND (20 FT)........WEST WINDS 5 TO 10 MPH. GUSTS UP TO 31 MPH  
DECREASING TO 21 MPH LATE IN THE AFTERNOON.  
CWR.................20 PERCENT.  
MIXING HEIGHT.......2200 TO 2700 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 35 TO 40 MPH BECOMING WEST 20 TO 30  
MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD.  
 
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........77 72 76 72 69 66 65 63 62 62 62 62  
WEATHER COV.....CHC CHC CHC CHC CHC SCH SCH SCH SCH SCH SCH SCH  
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN SN  
TSTM COV........  
CWR.............20 20 20 20 20 20 20 20 20 20 20 20  
TEMP............18 19 21 22 23 24 24 23 22 20 19 18  
RH..............100 100 100 99 95 92 92 92 93 94 95 96  
20 FT WIND DIR..W NW NW NW W W W W W W W W  
20 FT WIND SPD..10 10 10 10 10 10 10 9 8 7 6 5  
20 FT WIND GUST.31 30 29 29 28 28 26 25 23 21 18 16  
MIX HGT (KFT)...0.8 0.9 1.1 1.6 2.2 2.7 2.7 2.7 2.7 2.0 1.2 0.5  
TRANSP WIND DIR.NW NW NW NW NW NW NW NW NW NW W W  
TRANSP WIND SPD.33 33 33 36 38 39 38 35 31 26 22 17  
 

 
FORECASTER...SR  
REQUESTED BY...ENGEBRETSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2527030.0/UNR  
.DELDT 12/04/25  
.FORMATTERVERSION 2.0.0  
.EMAIL STEPHEN.ENGEBRETSON@USDA.GOV  
 
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