963  
FNUS75 KCYS 211210  
FWSCYS  
 
SPOT FORECAST FOR F.E. WARREN...USFWS  
NATIONAL WEATHER SERVICE CHEYENNE WY  
510 AM MST FRI NOV 21 2025  
 
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE AT (307) 772-2227  
   
DISCUSSION  
 
PRECIPITATION CHANCES EXPECTED THIS MORNING THROUGH THE EARLY AFTERNOON  
HOURS AS THE REMNANTS OF A WEATHER SYSTEM MOVE OUT OF THE AREA. HUMIDITY  
VALUES WILL REMAIN HIGH TODAY, WITH MINIMUM RELATIVE HUMIDITY VALUES  
AROUND 75 TO 80% DURING THE DAY TODAY, MAXING OUT AROUND 100%. CLEARING  
SKIES THROUGH THE EVENING HOURS, WITH LIGHT AND VARIABLE WINDS THROUGHOUT  
MUCH OF THE DAY. LIGHT, WESTERLY WINDS RETURN THIS EVENING AROUND 8PM.  
   
TODAY  
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). PATCHY FOG EARLY  
IN THE MORNING. RAIN SHOWERS LIKELY AND SLIGHT  
CHANCE OF SNOW SHOWERS IN THE MORNING, THEN  
SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON.  
CWR.................40 PERCENT DECREASING TO 7 PERCENT LATE IN THE  
MORNING.  
MAX TEMPERATURE.....AROUND 43.  
MIN HUMIDITY........76 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS AROUND 5 MPH EARLY IN THE  
MORNING BECOMING LIGHT, THEN BECOMING SOUTH  
AROUND 5 MPH LATE IN THE AFTERNOON.  
MIXING HEIGHT.......2700 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 7 TO 10 MPH SHIFTING TO THE SOUTH 6  
TO 8 MPH IN THE LATE MORNING AND EARLY  
AFTERNOON, THEN SHIFTING TO THE SOUTHWEST 8 TO  
10 MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (7500 KNOT-FT).  
 
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........95 96 94 92 92 89 84 83 81 79 78 76  
WEATHER COV.....LKY LKY CHC CHC CHC SCH SCH SCH  
WEATHER TYPE....RW RW RW RW RW RW RW RW  
TSTM COV........  
CWR.............40 40 40 40 40 10 10 10 10 10 10 0  
TEMP............37 36 39 41 40 40 42 42 41 42 41 40  
RH..............96 100 92 82 85 85 76 76 79 76 79 82  
20 FT WIND DIR..N NE NE NE E E SE S SW SW SW S  
20 FT WIND SPD..5 5 5 5 3 3 3 3 3 3 3 5  
20 FT WIND GUST.8 8 8 8 6 7 7 7 6 7 7 8  
MIX HGT (KFT)...1.4 1.5 1.4 1.3 1.5 1.9 2.1 2.6 2.7 2.7 1.4 1.1  
TRANSP WIND DIR.NE NE NE E SE S S S S SW SW SW  
TRANSP WIND SPD.10 10 8 7 6 7 7 8 8 8 9 10  
SDSPL KT-FT/100013 14 10 8 8 12 13 18 19 19 11 10  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING  
PARTLY CLOUDY (20-30 PERCENT).  
CWR.................1 PERCENT.  
MIN TEMPERATURE.....AROUND 31.  
MAX HUMIDITY........96 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 6 TO 12 MPH SHIFTING TO THE  
WEST 12 TO 13 MPH OVERNIGHT.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....WEST 9 TO 17 MPH.  
SMOKE DISPERSAL.....POOR (4600 KNOT-FT).  
 
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........65 65 62 55 41 42 32 21 18 14 12 9  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............38 36 35 35 34 34 33 35 35 34 34 35  
RH..............89 92 96 92 92 89 89 78 78 78 78 75  
20 FT WIND DIR..SW SW SW SW W W W W W W W W  
20 FT WIND SPD..6 7 8 9 10 12 12 12 12 12 13 13  
20 FT WIND GUST.9 13 15 17 18 20 20 20 22 22 23 23  
MIX HGT (KFT)...1.1 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.5 0.6 0.6 0.6  
TRANSP WIND DIR.W SW SW W W W W W W W W W  
TRANSP WIND SPD.12 9 12 12 13 14 14 15 17 16 16 17  
SDSPL KT-FT/100011 5 6 6 6 7 7 7 8 8 8 9  
   
SATURDAY  
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
CWR.................0 PERCENT.  
MAX TEMPERATURE.....AROUND 53.  
MIN HUMIDITY........38 PERCENT.  
WIND (20 FT)........WEST WINDS 7 TO 12 MPH SHIFTING TO THE  
SOUTHWEST AROUND 6 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......4800 FT AGL.  
TRANSPORT WINDS.....WEST 9 TO 18 MPH DECREASING TO 7 TO 8 MPH EARLY  
IN THE AFTERNOON, THEN SHIFTING TO THE SOUTH 10  
TO 13 MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (5200 KNOT-FT).  
 
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........9 9 4 3 5 7 7 6 4 3 4 4  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............33 35 38 45 48 52 52 52 52 50 48 45  
RH..............82 75 67 51 46 39 38 38 38 41 46 53  
20 FT WIND DIR..W W W W W W W SW SW SW S S  
20 FT WIND SPD..12 12 9 8 8 7 7 6 6 6 6 6  
20 FT WIND GUST.22 20 17 15 15 14 12 9 9 9 9 9  
MIX HGT (KFT)...0.5 0.5 0.5 0.9 1.6 2.6 3.7 4.6 4.8 3.6 1.9 0.5  
TRANSP WIND DIR.W W W NW NW W W W SW SW S S  
TRANSP WIND SPD.18 16 15 13 10 9 8 7 7 8 10 13  
SDSPL KT-FT/10008 7 7 10 15 21 26 27 29 25 17 5  
 
 
FORECASTER...MOSE  
REQUESTED BY...MICHAEL MILLER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2526046.6/CYS  
.DELDT 11/21/25  
.FORMATTERVERSION 2.0.0  
.EMAIL MICHAEL_A_MILLER@FWS.GOV  
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