902
FNUS75 KCYS 071900
FWSCYS

Spot Forecast for Chadron Creek RX...FS USDA
National Weather Service Cheyenne WY
100 PM MDT Mon Apr 7 2025

If conditions become unrepresentative, contact the National Weather
Service at (307) 772-2227

.DISCUSSION...

Current observations show a relative humidity of 29 percent with winds out
of the south at 10 MPH. Mild and dry conditions continue through this
afternoon. Winds will pick up this evening and be sustained around 15 MPH.
Humidity will recover to about 60 percent overnight. Winds will turn out of
the west-northwest at 20 to 25 MPH with gusts up to 35 MPH possible on Tuesday.
Minimum relative will fall to about 18 percent during the afternoon hours.
There is a slight chance for an isolated shower or thunderstorm during the day.

.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Max temperature.....Around 64.
Min humidity........23 percent.
Wind (20 ft)........Light winds becoming south around 5 mph late in
                    the afternoon.
Mixing height.......6400 ft AGL.
Transport winds.....West 7 to 8 mph shifting to the southwest
                    around 9 mph late in the afternoon.
Smoke dispersal.....Poor (30600 knot-ft) early in the morning
                    increasing to fair (49300 knot-ft) in the
                    afternoon.

TIME (MDT)      1PM 2PM 3PM 4PM 5PM
Sky (%).........4   4   5   6   4
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0
Temp............61  61  61  62  61
RH..............28  26  25  24  26
20 FT wind dir..W   SW  SW  S   S
20 FT wind spd..2   2   3   3   5
20 FT wind gust.6   6   7   7   8
Mix hgt (kft)...5.1 5.8 6.3 6.4 6.0
Transp wind dir.W   W   W   W   SW
Transp wind spd.7   8   8   8   9
SDspl kt-ft/100031  41  44  45  49

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent).
CWR.................0 percent.
Min temperature.....Around 40.
Max humidity........59 percent.
Wind (20 ft)........South winds 6 to 15 mph with gusts to around 29
                    mph shifting to the west around 12 mph after 3
                    am.
Mixing height.......300 ft AGL.
Transport winds.....Southeast 9 to 18 mph shifting to the west 15
                    to 17 mph after 3 am.
Smoke dispersal.....Poor (3500 knot-ft).

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........6   7   5   7   8   11  14  24  31  41  37  27
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............64  59  53  49  47  45  44  42  41  41  40  41
RH..............23  27  34  40  46  48  51  55  56  57  57  57
20 FT wind dir..S   S   S   S   S   S   S   S   S   SW  SW  W
20 FT wind spd..6   7   9   12  14  15  16  16  15  14  12  12
20 FT wind gust.10  14  17  22  25  29  30  30  28  25  23  21
Mix hgt (kft)...4.7 0.5 0.6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Transp wind dir.S   SE  SE  SE  S   S   S   S   SW  SW  SW  W
Transp wind spd.9   12  16  18  20  22  23  21  18  17  15  15
SDspl kt-ft/100039  6   8   5   6   7   7   7   6   5   4   4

.TUESDAY...

Sky/weather.........Mostly sunny (30-40 percent). Slight chance of
                    rain showers in the afternoon.
CWR.................5 percent.
Max temperature.....Around 73.
Min humidity........18 percent.
Wind (20 ft)........West winds 10 to 20 mph. Gusts up to 36 mph
                    late in the morning.
Mixing height.......8800 ft AGL increasing to 10700 ft AGL late in
                    the afternoon.
Transport winds.....West 16 to 25 mph increasing to 23 to 28 mph in
                    the afternoon.
Smoke dispersal.....Poor (1300 knot-ft) early in the morning
                    increasing to good (97900 knot-ft) in the
                    afternoon increasing to very good (143300
                    knot-ft) early in the morning increasing to
                    excellent (207500 knot-ft) in the afternoon
                    early in the afternoon, then increasing to
                    excellent (202700 knot-ft) late in the
                    afternoon decreasing to very good (127700
                    knot-ft) late in the afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........17  18  14  26  20  21  31  49  50  56  52  51
Weather cov.....                        SCH SCH SCH SCH SCH SCH
Weather type....                        RW  RW  RW  RW  RW  RW
Tstm cov........
CWR.............0   0   0   0   0   0   10  10  10  10  10  10
Temp............40  42  49  55  60  65  69  71  72  73  72  71
RH..............59  56  45  38  32  26  22  20  18  18  18  19
20 FT wind dir..W   W   W   W   W   W   NW  NW  NW  NW  NW  NW
20 FT wind spd..12  12  12  14  15  16  17  18  20  20  18  17
20 FT wind gust.20  21  23  25  28  31  33  35  36  36  35  33
Mix hgt (kft)...0.3 0.1 0.2 1.0 2.7 4.8 6.8 8.8 10  11  9.2 6.7
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   NW
Transp wind spd.16  16  17  18  21  23  25  26  28  28  25  23
SDspl kt-ft/10004   4   7   20  51  98  155 208 251 260 206 139

$$
Forecaster...Fuller
Requested by...Ben Jech
Type of request...PRESCRIBED
.TAG 2508618.1/CYS
.DELDT 04/07/25
.FormatterVersion 2.0.0
.EMAIL benjamin.j.jech@usda.gov,jason.r.haug@usda.gov