285  
FNUS75 KCYS 131038  
FWSCYS  
 
SPOT FORECAST FOR CHADRON CREEK RX...USDA FOREST SERVICE  
NATIONAL WEATHER SERVICE CHEYENNE WY  
438 AM MDT MON OCT 13 2025  
 
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE AT (307) 772-2227  
   
DISCUSSION  
 
ANOTHER SURGE OF MOISTURE WILL PUSH IN FROM THE SOUTH TODAY,  
BRINGING SCATTERED SHOWERS TO THE AREA. THESE WILL BE MOST LIKELY  
BETWEEN ABOUT 4PM AND 9PM, BUT SOME MAY LINGER THROUGH TUESDAY  
MORNING. SHOWER ACTIVITY IS EXPECTED TO BE GENERALLY LIGHT,  
AND THE CHANCE FOR WETTING RAINFALL REMAINS FAIRLY LOW. SOUTHEAST  
WINDS WILL DEVELOP THIS MORNING AND WILL BE CONSISTENT THROUGH  
TUESDAY. WINDS WILL BE SLIGHTLY STRONGER OVERNIGHT WITH GUSTS  
TO AROUND 35 MPH EXPECTED.  
 
HUMIDITY WILL REMAIN FAIRLY HIGH TODAY, ONLY DROPPING TO AROUND  
35% AND THEN RECOVERING TO NEAR 100% TONIGHT. TUESDAY WILL  
BE QUITE HUMID FOR THIS TIME OF YEAR, AS MIN RH MAY REMAIN ABOVE  
60%.  
   
REST OF TODAY  
 
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF RAIN  
SHOWERS LATE IN THE AFTERNOON.  
CWR.................6 PERCENT.  
MAX TEMPERATURE.....AROUND 58.  
MIN HUMIDITY........35 TO 38 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 10 TO 16 MPH GUSTING TO AROUND  
30 MPH.  
MIXING HEIGHT.......3600 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 15 TO 24 MPH SHIFTING TO THE SOUTH 25  
TO 28 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (5100 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (86900 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........14 16 18 19 19 20 46 67 71 77 83  
WEATHER COV..... CHC CHC CHC  
WEATHER TYPE.... RW RW RW  
TSTM COV........  
CWR.............0 0 0 0 0 10 10 10 10 10 10  
TEMP............34 36 39 45 49 53 55 56 57 56 55  
RH..............96 92 85 68 56 46 41 38 37 38 41  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE  
20 FT WIND SPD..9 10 12 13 14 15 16 16 16 16 16  
20 FT WIND GUST.16 18 22 24 26 29 29 29 29 29 29  
MIX HGT (KFT)...0.3 0.4 1.2 1.5 2.1 2.9 3.3 3.5 3.6 3.5 3.1  
TRANSP WIND DIR.SE SE SE S S S S S S S S  
TRANSP WIND SPD.17 15 22 22 22 24 25 25 28 28 28  
SDSPL KT-FT/10005 5 22 28 39 61 72 76 87 84 76  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF RAIN  
SHOWERS.  
CWR.................6 PERCENT.  
MIN TEMPERATURE.....AROUND 43.  
MAX HUMIDITY........95 TO 100 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 15 TO 20 MPH GUSTING TO 35 MPH.  
MIXING HEIGHT.......600 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 23 TO 29 MPH.  
SMOKE DISPERSAL.....FAIR (51900 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (13800 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........86 86 83 75 74 70 73 66 73 76 78 75  
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........  
CWR.............10 10 10 10 10 10 10 10 10 10 10 10  
TEMP............52 48 45 45 45 45 45 45 45 44 44 44  
RH..............48 58 68 70 73 73 73 73 73 79 82 86  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE  
20 FT WIND SPD..16 16 17 18 18 18 18 18 18 17 17 16  
20 FT WIND GUST.29 30 32 33 33 33 32 32 33 32 31 30  
MIX HGT (KFT)...2.4 2.0 1.2 0.8 0.8 0.6 0.7 0.9 0.8 1.0 1.2 1.2  
TRANSP WIND DIR.SE S S SE SE SE SE SE SE SE SE SE  
TRANSP WIND SPD.25 28 25 25 25 28 29 26 24 23 24 25  
SDSPL KT-FT/100052 47 27 17 17 14 18 20 17 21 25 27  
   
TUESDAY  
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT) THEN BECOMING PARTLY  
SUNNY (55-65 PERCENT). CHANCE OF RAIN SHOWERS  
IN THE MORNING.  
CWR.................6 PERCENT.  
MAX TEMPERATURE.....AROUND 59.  
MIN HUMIDITY........65 TO 70 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 10 TO 16 MPH GUSTING TO 30 MPH.  
MIXING HEIGHT.......2100 FT AGL.  
TRANSPORT WINDS.....SOUTH 18 TO 26 MPH DECREASING TO 14 TO 16 MPH  
LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14700 KNOT-FT).  
 
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........86 91 84 84 67 67 67 62 57 52 50 49  
WEATHER COV.....CHC CHC CHC CHC CHC CHC  
WEATHER TYPE....RW RW RW RW RW RW  
TSTM COV........  
CWR.............10 10 10 10 10 10 0 0 0 0 0 0  
TEMP............43 43 44 45 48 48 52 54 56 58 57 56  
RH..............93 96 100 100 93 96 83 80 74 69 75 77  
20 FT WIND DIR..SE SE SE SE SE S S S SE SE SE SE  
20 FT WIND SPD..16 15 14 13 12 12 12 10 10 9 8 8  
20 FT WIND GUST.29 26 25 23 22 21 20 18 17 17 16 15  
MIX HGT (KFT)...1.2 1.2 1.3 1.5 1.6 1.8 2.0 2.1 2.1 2.0 1.6 1.2  
TRANSP WIND DIR.SE S S S S S S S S S S S  
TRANSP WIND SPD.25 26 24 23 23 22 21 18 16 15 14 14  
SDSPL KT-FT/100025 28 28 30 32 34 36 34 30 26 20 15  
 
 
FORECASTER...NATOLI  
REQUESTED BY...BEN JECH  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2523170.4/CYS  
.DELDT 10/13/25  
.FORMATTERVERSION 2.0.0  
.EMAIL BENJAMIN.J.JECH@USDA.GOV  
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