161
FNUS75 KCYS 200829
FWSCYS
SPOT FORECAST FOR POLE MTN PRESCIBED...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
229 AM MDT TUE OCT 20 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
WINDS WILL BE OUT OF THE WEST IN THE MORNING SWITCHING TO NW AROUND 12 TO 2PM.
WIND GUSTS ARE EXPECTED TO START IN THE LATE MORNING TO EARLY AFTERNOON (10A-12PM)
WITH A MAX WIND GUST OF AROUND 20 MPH. RIGHT AROUND 4PM THE WINDS SHOULD START TO
DECREASE BEFORE STAYING AROUND 5 MPH AFTER 6PM. THERE ALSO COULD BE SOME BRIEF
SHOWERS THIS AFTERNOON BETWEEN 3PM AND 6PM. THERE IS SOME UNCERTAINTY IF THESE
SHOWERS ARE GOING TO STAY TOGETHER WHEN COMING FROM COLORADO. ONLY A LIGHT
DRIZZLE IS EXPECTED IF THESE SHOWERS DO OCCUR. AFTER 6PM THE NOCTURNAL INVERSION
WILL BEGIN TO SET IN, THIS WILL DECREASE SMOKE DISPERSAL AND THE WINDS MAY BECOME
LIGHT AND VARIABLE AT TIMES OVERNIGHT.
TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................1 PERCENT.
MAX TEMPERATURE.....AROUND 58.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........WEST WINDS 6 TO 8 MPH BECOMING LIGHT.
MIXING HEIGHT.......6700 FT AGL.
TRANSPORT WINDS.....WEST 9 TO 14 MPH.
SMOKE DISPERSAL.....POOR (5300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (60700 KNOT-FT) IN THE
AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........26 26 26 8 8 8 9 9 9 24 24 24
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............38 41 44 48 50 53 56 56 57 58 56 55
RH..............85 76 68 60 56 50 42 40 37 36 38 41
20 FT WIND DIR..W W W W W W W W NW NW NW NW
20 FT WIND SPD..7 7 7 8 8 8 8 7 6 6 5 3
20 FT WIND GUST.14 15 16 17 18 18 18 16 14 12 10 9
MIX HGT (KFT)...0.5 0.5 0.5 0.7 1.3 3.0 4.8 5.9 6.6 6.7 5.8 5.3
TRANSP WIND DIR.W W W W W W W W W W W NW
TRANSP WIND SPD.12 12 13 13 14 12 12 10 10 10 9 9
SDSPL KT-FT/10005 5 6 7 16 30 44 54 59 61 47 42
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (20-30 PERCENT).
CWR.................1 PERCENT.
MIN TEMPERATURE.....AROUND 43.
MAX HUMIDITY........68 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 6 TO 7 MPH SHIFTING TO THE WEST 6 TO
8 MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....POOR (2500 KNOT-FT).
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........54 54 54 48 48 48 11 11 11 6 6 6
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............54 52 51 49 47 46 44 44 44 43 43 43
RH..............45 50 54 58 63 63 68 68 68 67 67 67
20 FT WIND DIR..N N NW W W W W W W W W W
20 FT WIND SPD..2 2 2 2 2 2 2 2 2 2 2 3
20 FT WIND GUST.9 8 8 8 7 7 6 6 6 6 7 8
MIX HGT (KFT)...0.9 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.N N N NW W NW W W W W W W
TRANSP WIND SPD.7 7 6 6 7 8 8 7 6 7 6 7
SDSPL KT-FT/10005 4 3 3 3 4 4 3 3 3 3 3
WEDNESDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 59.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH SHIFTING TO THE
SOUTH 7 TO 12 MPH IN THE LATE MORNING AND
AFTERNOON.
MIXING HEIGHT.......6700 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 7 TO 16 MPH INCREASING TO 17 TO 21
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (3200 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (90800 KNOT-FT) IN THE
AFTERNOON INCREASING TO GOOD (67800 KNOT-FT)
EARLY IN THE MORNING INCREASING TO VERY GOOD
(120200 KNOT-FT) IN THE AFTERNOON LATE IN THE
AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........27 27 27 24 24 24 17 17 17 24 24 24
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............43 44 46 47 50 53 56 57 58 59 57 54
RH..............65 60 58 58 54 48 43 40 37 36 38 45
20 FT WIND DIR..W SW SW S S S S S S S S S
20 FT WIND SPD..5 6 6 7 7 9 10 9 9 10 10 12
20 FT WIND GUST.9 10 10 12 14 16 17 17 17 17 17 17
MIX HGT (KFT)...0.5 0.5 0.5 0.5 1.9 3.7 4.8 5.7 6.7 5.6 5.6 4.5
TRANSP WIND DIR.W W SW SW SW SW SW SW W SW SW S
TRANSP WIND SPD.7 8 9 10 13 15 16 18 21 17 17 17
SDSPL KT-FT/10003 4 4 5 21 48 67 91 120 84 84 68
FORECASTER...MCLAUGHLIN
REQUESTED BY...COYDE FICKEL
TYPE OF REQUEST...PRESCRIBED
.TAG 2623834.3/CYS
.DELDT 10/20/26
.FORMATTERVERSION 2.0.0
.EMAIL COYDE.FICKEL@USDA.GOV
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