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