Spot Forecast
Issued by NWS Cheyenne, WY
Issued by NWS Cheyenne, WY
598
FNUS75 KCYS 111053
FWSCYS
Spot Forecast for Chadron Creek RX...USDA Forest Service
National Weather Service Cheyenne WY
453 AM MDT Sat Oct 11 2025
If conditions become unrepresentative, contact the National Weather
Service at (307) 772-2227
.DISCUSSION...
Plentiful moisture remains over the area today, which will keep RH
fairly high, generally above 40%. The chance for light showers
in the area has increased mainly between about 3pm and 7pm, but
the chance for a wetting rainfall remains fairly low. These showers
could bring brief gusty or erratic winds, but the prevailing wind
direction will be south. Winds will turn more southwest overnight,
and then quickly west as a strong cold front sweeps through around
daybreak Sunday. Expect much drier conditions on Sunday (min RH
near 20%) along with strong west winds gusting to around 45 mph.
Winds will become northwest Sunday afternoon and then variable
overnight before settling back into southeasterly Monday morning.
.REST OF TODAY...
Sky/weather.........Mostly sunny (45-55 percent) then becoming
mostly cloudy (75-85 percent). Slight chance of
rain showers late in the afternoon.
CWR.................5 percent.
Max temperature.....Around 74.
Min humidity........40 to 45 percent.
Wind (20 ft)........South winds 12 to 20 mph. Gusts up to 35 mph in
the morning. Gusty and erratic winds are possible
near showers in the afternoon.
Mixing height.......3500 ft AGL.
Transport winds.....South 16 to 25 mph.
Smoke dispersal.....Poor (11000 knot-ft) early in the morning
increasing to good (60200 knot-ft) in the
afternoon.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........57 45 49 40 45 57 71 81 87 86 81
Weather cov..... SCH SCH SCH
Weather type.... RW RW RW
Tstm cov........
CWR.............0 0 0 0 0 10 10 10 10 10 10
Temp............55 55 57 61 68 71 73 74 73 72 70
RH..............86 90 83 75 59 53 48 44 46 48 53
20 FT wind dir..S S S S S S S S S S S
20 FT wind spd..20 17 16 15 13 12 12 12 12 12 12
20 FT wind gust.35 32 30 26 24 22 21 21 21 20 20
Mix hgt (kft)...0.5 0.8 0.9 1.0 1.2 1.7 2.4 3.0 3.5 2.4 1.4
Transp wind dir.S S S S S S S S SW S S
Transp wind spd.25 25 23 21 18 18 18 18 20 20 16
SDspl kt-ft/100011 18 17 19 18 27 38 48 60 42 19
.TONIGHT...
Sky/weather.........Mostly cloudy (60-70 percent) then becoming
mostly clear (20-30 percent). Slight chance of
rain showers early in the evening.
CWR.................5 percent.
Min temperature.....Around 53.
Max humidity........80 percent.
Wind (20 ft)........South winds 10 to 15 mph with gusts to around 20
mph becoming southwest late.
Mixing height.......300 ft AGL.
Transport winds.....Southwest 14 to 21 mph.
Smoke dispersal.....Poor (4400 knot-ft).
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........81 52 38 25 17 20 16 11 11 10 18 14
Weather cov.....SCH SCH SCH
Weather type....RW RW RW
Tstm cov........
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
Temp............68 64 62 61 60 60 59 58 58 58 56 56
RH..............59 70 72 75 78 78 80 80 77 75 74 72
20 FT wind dir..S S S S S S S S S SW SW SW
20 FT wind spd..10 12 12 12 12 10 10 10 12 12 14 16
20 FT wind gust.18 20 20 20 20 20 20 20 20 22 26 32
Mix hgt (kft)...0.6 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.3 0.4 0.4 0.4
Transp wind dir.S S S S SW SW SW S SW SW SW SW
Transp wind spd.14 14 16 16 17 18 18 18 20 20 20 21
SDspl kt-ft/10007 4 5 5 6 6 6 6 6 7 7 8
.SUNDAY...
Sky/weather.........Sunny (20-30 percent).
CWR.................1 percent.
Max temperature.....Around 62.
Min humidity........18 to 22 percent.
Wind (20 ft)........West winds 15 to 25 mph gusting up to 45 mph
mainly in the morning and early afternoon. Winds
will become more northwest late.
Mixing height.......7800 ft AGL.
Transport winds.....West 24 to 28 mph increasing to 36 to 43 mph
early in the morning, then becoming northwest
24 to 31 mph late in the afternoon.
Smoke dispersal.....Poor (12600 knot-ft) early in the morning
increasing to very good (109800 knot-ft) in the
afternoon increasing to very good (135200
knot-ft) early in the morning increasing to
excellent (221400 knot-ft) in the afternoon
late in the morning, then increasing to
excellent (169000 knot-ft) late in the
afternoon decreasing to good (76100 knot-ft)
late in the afternoon.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........26 40 27 40 23 38 37 28 19 13 10 9
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............56 54 53 55 57 56 59 60 60 61 59 58
RH..............64 64 61 51 40 35 27 24 22 20 22 24
20 FT wind dir..W W W W W W W W W NW NW NW
20 FT wind spd..20 21 21 21 22 22 21 21 21 20 17 15
20 FT wind gust.36 38 39 40 40 40 40 39 38 36 32 29
Mix hgt (kft)...0.6 0.7 1.7 2.5 3.5 4.2 5.0 6.0 7.3 7.8 6.3 3.6
Transp wind dir.W W W W W W W W W W W NW
Transp wind spd.24 28 36 37 36 37 37 43 41 37 31 24
SDspl kt-ft/100013 18 54 81 110 135 159 221 262 251 169 76
$$
Forecaster...Natoli
Requested by...Ben Jech
Type of request...PRESCRIBED
.TAG 2523170.2/CYS
.DELDT 10/11/25
.FormatterVersion 2.0.0
.EMAIL benjamin.j.jech@usda.gov