579
FNUS75 KCYS 142153
FWSCYS

Spot Forecast for Mclane/Spool...BLM
National Weather Service Cheyenne WY
253 PM MST Tue Jan 14 2025

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

.DISCUSSION...

A high temperatures around 25 is expected Wednesday with a minimum relative
humidity of 60 percent. The strongest winds are expected during the morning
hours with southwest winds at 10 to 15 MPH. Gusts up to 25 MPH will be
possible. Winds during the afternoon will be around 10 MPH with gusts to
20 MPH. Precipitation is not expected during the day Wednesday. Warmer
temperatures are expected Thursday with a high around 30. Drier conditions
are also expected with a minimum relative humidity near 50 percent. Breezier
conditions are likely Thursday with south-southwest winds at 20 MPH with
gusts over 30 MPH possible.

.WEDNESDAY...

Sky/weather.........Mostly sunny (20-30 percent).
Max temperature.....Around 25.
Min humidity........60 percent.
Wind (20 ft)........Southwest winds 9 to 13 mph.
Mixing height.......900 ft AGL.
Transport winds.....West 13 to 18 mph.
Smoke dispersal.....Poor (5100 knot-ft).

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........44  46  46  30  23  18  10  7   9   9   10  10
Weather cov.....
Weather type....
Tstm cov........
Temp............11  11  14  16  19  21  24  25  25  25  21  18
RH..............83  83  76  70  64  62  60  60  62  62  71  77
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..13  12  12  12  12  12  10  10  9   9   9   10
20 FT wind gust.24  23  22  21  21  21  20  18  17  17  18  18
Mix hgt (kft)...0.4 0.4 0.4 0.5 0.6 0.7 0.8 0.9 0.9 0.7 0.5 0.4
Transp wind dir.W   W   W   W   W   SW  SW  W   W   W   W   W
Transp wind spd.18  17  16  15  14  13  13  13  14  14  15  16
SDspl kt-ft/10006   6   6   6   7   8   9   10  10  9   7   5

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent). Patchy blowing
                    snow early in the morning.
Min temperature.....Around 18.
Max humidity........77 percent.
Wind (20 ft)........Southwest winds 10 to 16 mph.
Mixing height.......300 ft AGL.
Transport winds.....Southwest 17 to 23 mph.
Smoke dispersal.....Poor (5000 knot-ft).

TIME (MST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........12  11  8   11  11  8   6   6   6   6   6   6
Weather cov.....                                            PTY
Weather type....                                            BSN
Tstm cov........
Temp............18  21  18  20  21  20  19  20  21  22  22  22
RH..............77  65  74  64  62  62  64  62  62  62  62  62
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  S   S   S
20 FT wind spd..10  12  12  12  12  13  13  14  14  15  15  16
20 FT wind gust.20  21  21  22  23  24  25  25  26  28  28  29
Mix hgt (kft)...0.3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.3 0.3
Transp wind dir.W   W   W   SW  SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.17  18  18  18  18  18  18  20  20  21  22  23
SDspl kt-ft/10005   6   6   6   6   6   6   6   7   7   7   7

.THURSDAY...

Sky/weather.........Sunny (0-10 percent). Patchy blowing snow.
Max temperature.....Around 31.
Wind (20 ft)........Southwest winds 16 to 18 mph.
Mixing height.......1200 ft AGL.
Transport winds.....Southwest 24 to 33 mph.
Smoke dispersal.....Poor (6500 knot-ft).

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........8   9   10  9   6   5   4   5   6   7   8   10
Weather cov.....PTY PTY PTY PTY PTY PTY PTY PTY PTY PTY PTY PTY
Weather type....BSN BSN BSN BSN BSN BSN BSN BSN BSN BSN BSN BSN
Tstm cov........
Temp............22  22  22  24  27  29  31  30  31  29  28  27
20 FT wind dir..S   SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..16  16  16  16  16  16  16  16  16  17  17  18
20 FT wind gust.29  30  30  30  30  30  31  31  32  32  33  33
Mix hgt (kft)...0.3 0.3 0.4 0.5 0.8 1.0 1.1 1.2 1.2 1.1 1.0 0.9
Transp wind dir.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.24  25  26  29  30  31  32  33  33  33  33  33
SDspl kt-ft/10007   7   8   14  21  27  32  34  35  32  28  25

$$
Forecaster...Fuller
Requested by...Burn Boss
Type of request...PRESCRIBED
.TAG 2500620.0/CYS
.DELDT 01/14/25
.FormatterVersion 2.0.0
.EMAIL cgeorge@blm.gov