217
FNUS75 KCYS 201217
FWSCYS
SPOT FORECAST FOR F.E. WARREN...USFWS
NATIONAL WEATHER SERVICE CHEYENNE WY
517 AM MST THU NOV 20 2025
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
WEATHER CONCERNS REMAIN MINIMAL THIS MORNING INTO THE EARLY AFTERNOON
HOURS. PRECIPITATION CHANCES BEGIN TO PICK UP BY 2PM AS ISOLATED RAIN
SHOWERS MOVE INTO THE AREA. RAIN WILL TRANSITION TO SNOW AFTER SUNSET
WITH AROUND AN INCH OF SNOW POSSIBLE OVERNIGHT. SNOW CONTINUES INTO
THE MORNING HOURS BEFORE SWITCHING BACK TO A RAIN/SNOW MIX BY LATE
FRIDAY MORNING. AFTERNOON RELATIVE HUMIDITY VALUES TODAY WILL REMAIN
ABOVE 40% WITH RELATIVE HUMIDITY INCREASING TO 85 TO 90% FOR FRIDAY
AFTERNOON. MOSTLY LIGHT WINDS TODAY OUT OF THE SOUTH AND SWITCHING TO
THE SOUTHEAST BY 10AM THIS MORNING. GUSTS UP TO AROUND 15MPH EXPECTED
THIS AFTERNOON. WINDS REMAIN CALM ON FRIDAY, WITH GUSTS UP TO 12MPH.
TODAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT) THEN BECOMING
CLOUDY (85-95 PERCENT). SLIGHT CHANCE OF RAIN
SHOWERS LATE IN THE AFTERNOON.
CWR.................5 PERCENT INCREASING TO 27 PERCENT LATE IN THE
AFTERNOON.
MAX TEMPERATURE.....AROUND 51.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 10 MPH SHIFTING TO THE
SOUTHEAST 7 TO 10 MPH IN THE AFTERNOON.
MIXING HEIGHT.......2900 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 9 TO 16 MPH.
SMOKE DISPERSAL.....POOR (3600 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (40800 KNOT-FT) IN THE
AFTERNOON.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........60 45 41 43 42 40 48 54 64 76 81 88
WEATHER COV..... SCH SCH SCH CHC
WEATHER TYPE.... RW RW RW RN
TSTM COV........
CWR.............0 0 0 0 0 10 10 10 10 10 10 30
TEMP............33 35 38 43 46 49 50 50 50 49 48 45
RH..............78 72 67 55 47 42 42 42 42 46 47 55
20 FT WIND DIR..SW SW SW S S S SE SE SE SE SE SE
20 FT WIND SPD..6 5 5 7 8 9 10 10 10 9 8 7
20 FT WIND GUST.9 8 8 12 14 17 17 17 17 16 14 13
MIX HGT (KFT)...0.6 0.6 0.4 1.0 1.6 2.3 2.6 2.9 2.6 2.7 2.3 1.5
TRANSP WIND DIR.SE E SE SE S S S S SE SE E E
TRANSP WIND SPD.9 10 9 13 16 16 16 16 15 14 15 13
SDSPL KT-FT/10005 5 4 12 22 32 37 41 34 32 30 17
TONIGHT
SKY/WEATHER.........CLOUDY (90-100 PERCENT). SLIGHT CHANCE OF SNOW
IN THE EVENING. SNOW LIKELY OVERNIGHT. PATCHY
FOG OVERNIGHT.
CWR.................27 PERCENT INCREASING TO 65 PERCENT LATE IN THE
EVENING.
MIN TEMPERATURE.....AROUND 31.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 7 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING NORTH 5 TO 6 MPH
AFTER 3 AM.
MIXING HEIGHT.......900 FT AGL.
TRANSPORT WINDS.....EAST 8 TO 13 MPH SHIFTING TO THE NORTHEAST 9 TO
15 MPH OVERNIGHT.
SMOKE DISPERSAL.....POOR (7100 KNOT-FT).
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........89 91 93 94 93 94 96 97 96 96 96 97
WEATHER COV.....CHC CHC LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY
WEATHER TYPE....RN RN RN RN RN RN RN RS RS RS RS RS
TSTM COV........
CWR.............30 30 30 30 30 70 70 70 70 70 70 60
TEMP............41 40 39 38 36 35 35 35 34 35 34 34
RH..............67 76 82 89 96 100 96 89 89 89 96 100
20 FT WIND DIR..SE SE SE SE E E E N N N N N
20 FT WIND SPD..7 6 6 5 3 3 2 3 3 5 5 6
20 FT WIND GUST.12 10 9 8 7 6 6 6 7 8 9 9
MIX HGT (KFT)...1.2 1.1 1.2 1.1 0.9 1.1 1.4 1.4 1.2 1.4 1.5 1.4
TRANSP WIND DIR.E E E E E E NE NE NE NE NE N
TRANSP WIND SPD.13 13 13 12 9 10 8 9 10 10 14 15
SDSPL KT-FT/100013 12 14 11 7 10 10 12 11 13 18 19
FRIDAY
SKY/WEATHER.........CLOUDY (85-95 PERCENT). PATCHY FOG EARLY IN THE
MORNING. CHANCE OF SNOW LATE IN THE MORNING.
CHANCE OF RAIN LATE IN THE MORNING.
CWR.................56 PERCENT DECREASING TO 4 PERCENT.
MAX TEMPERATURE.....AROUND 41.
MIN HUMIDITY........85 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 6 MPH SHIFTING TO THE
SOUTHWEST AROUND 5 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......1600 FT AGL.
TRANSPORT WINDS.....NORTHEAST 8 TO 13 MPH SHIFTING TO THE NORTHWEST
AROUND 7 MPH LATE IN THE AFTERNOON, THEN
SHIFTING TO THE SOUTHWEST AROUND 6 MPH LATE IN
THE AFTERNOON.
SMOKE DISPERSAL.....POOR (2800 KNOT-FT).
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........97 97 96 93 94 94 93 92 90 87 84 81
WEATHER COV.....LKY LKY LKY LKY LKY CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RS RS RS RS RS RS RN RN RN RN RN
TSTM COV........
CWR.............60 60 60 60 60 20 20 20 20 20 20 0
TEMP............33 31 34 36 37 37 38 39 40 39 38 37
RH..............100 100 100 96 96 96 92 89 85 89 92 92
20 FT WIND DIR..N N N N N N N W W W SW SW
20 FT WIND SPD..6 6 6 6 5 5 5 6 6 5 5 5
20 FT WIND GUST.9 9 9 9 9 8 9 9 9 8 8 8
MIX HGT (KFT)...1.4 0.9 0.9 0.9 1.0 1.2 1.4 1.6 1.6 1.3 0.9 0.6
TRANSP WIND DIR.NE NE NE NE NE NE NE N N NW SW S
TRANSP WIND SPD.13 9 9 9 9 9 9 8 8 7 6 6
SDSPL KT-FT/100015 8 7 8 8 9 11 11 11 8 5 3
FORECASTER...MOSE
REQUESTED BY...MICHAEL MILLER
TYPE OF REQUEST...PRESCRIBED
.TAG 2526046.5/CYS
.DELDT 11/20/25
.FORMATTERVERSION 2.0.0
.EMAIL MICHAEL_A_MILLER@FWS.GOV
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