852  
FNUS73 KUNR 211801  
FWSUNR  
 
SPOT FORECAST FOR WRIGHT RX...SDWF  
NATIONAL WEATHER SERVICE RAPID CITY SD  
ISSUED BY NATIONAL WEATHER SERVICE NORTH PLATTE NE  
1201 PM MDT WED MAY 21 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON MAY 22.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
DISCUSSION...  
EXPECT A FAIRLY WET PATTERN ACROSS NORTHEASTERN WYOMING AND  
WESTERN SOUTH DAKOTA FROM THURSDAY AFTERNOON AND INTO THE  
REMAINDER OF THE WEEK INTO THE WEEKEND. BELOW NORMAL TEMPERATURES,  
COUPLED WITH PERIODIC CHANCES FOR SHOWERS AND THUNDERSTORMS WILL  
BRING A GOOD CHANCE FOR WETTING RAINS ACROSS THE AREA. THE  
COMBINATION OF PERSISTENT WET CONDITIONS AND COOLER THAN NORMAL  
TEMPERATURES, WILL LIMIT FIRE WEATHER CONCERNS ACROSS THE AREA  
THROUGH MEMORIAL DAY.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY (20-30 PERCENT).  
MAX TEMPERATURE.....AROUND 65.  
MIN HUMIDITY........44 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 10 TO 15 MPH. GUSTS UP TO 20  
MPH LATE IN THE MORNING.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......6200 TO 6700 FT AGL.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH SHIFTING TO THE EAST 20  
TO 25 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....VERY GOOD.  
 
TIME (MDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........8 14 19 23 28 32 36 39  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0  
TEMP............57 60 61 62 63 63 64 64  
RH..............51 46 46 45 44 45 45 45  
20 FT WIND DIR..E E E E SE SE SE SE  
20 FT WIND SPD..6 8 10 12 13 13 14 14  
20 FT WIND GUST.8 12 15 16 17 17 20 20  
MIX HGT (KFT)...5.0 5.7 6.5 6.5 6.6 6.7 6.1 5.5  
TRANSP WIND DIR.N NE E E SE SE SE SE  
TRANSP WIND SPD.12 14 16 18 21 22 23 24  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (65-75 PERCENT). RAIN SHOWERS  
LIKELY THROUGH THE NIGHT. SLIGHT CHANCE OF  
THUNDERSTORMS LATE IN THE EVENING.  
MIN TEMPERATURE.....AROUND 45.  
MAX HUMIDITY........90 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 10 TO 15 MPH. GUSTS UP TO 21  
MPH IN THE EVENING. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS LATE IN THE  
EVENING.  
CWR.................40 PERCENT.  
MIXING HEIGHT.......1000 TO 1500 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 15 TO 25 MPH DECREASING TO 10 TO 15  
MPH OVERNIGHT.  
SMOKE DISPERSAL.....POOR.  
 
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........43 53 63 73 77 80 84 78 71 65 61 56  
WEATHER COV.....LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........ SCH SCH SCH  
CWR.............40 40 40 40 40 40 40 40 40 40 40 40  
TEMP............62 60 56 53 51 49 48 47 47 46 45 45  
RH..............47 52 59 67 72 79 81 85 87 89 88 90  
20 FT WIND DIR..SE SE E E E SE SE SE SE SE SE SE  
20 FT WIND SPD..15 14 12 10 9 9 8 7 7 6 6 6  
20 FT WIND GUST.21 20 16 15 13 13 12 9 9 8 8 8  
MIX HGT (KFT)...5.0 3.7 2.4 1.1 1.1 1.1 1.2 1.1 1.1 1.0 1.0 1.0  
TRANSP WIND DIR.SE E E E E SE SE SE SE S S S  
TRANSP WIND SPD.24 23 21 18 17 16 15 14 13 13 12 10  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). CHANCE OF RAIN  
SHOWERS IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 68.  
MIN HUMIDITY........55 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS AROUND 10 MPH SHIFTING TO THE  
EAST IN THE AFTERNOON.  
CWR.................20 PERCENT.  
MIXING HEIGHT.......3200 TO 3700 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH SHIFTING TO THE  
NORTHEAST 15 TO 20 MPH LATE IN THE MORNING.  
SMOKE DISPERSAL.....GOOD.  
 
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........52 48 43 39 41 44 46 46 45 45 48 50  
WEATHER COV..... CHC CHC CHC CHC CHC CHC  
WEATHER TYPE.... RW RW RW RW RW RW  
TSTM COV........  
CWR.............20 20 20 20 20 20 20 20 20 20 20 20  
TEMP............45 47 50 53 57 60 63 66 67 67 67 67  
RH..............88 89 87 84 76 69 61 59 57 56 56 55  
20 FT WIND DIR..SE SE SE SE SE E E E E E E NE  
20 FT WIND SPD..6 6 6 6 7 8 9 10 12 12 12 12  
20 FT WIND GUST.8 8 8 8 9 12 13 15 16 16 16 16  
MIX HGT (KFT)...1.0 1.2 1.4 1.6 2.1 2.5 3.0 3.2 3.4 3.7 3.2 2.8  
TRANSP WIND DIR.S S SE SE SE E E E NE NE NE NE  
TRANSP WIND SPD.10 10 10 12 13 15 16 17 18 20 20 20  
 

 
FORECASTER...NWS  
REQUESTED BY...SETH STEVENS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2514426.0/UNR  
.DELDT 05/21/25  
.FORMATTERVERSION 2.0.0  
.EMAIL SETH.STEVENS@STATE.SD.US  
 
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