166
FNUS75 KCYS 011227
FWSCYS

Spot Forecast for Rob Roy Rx...USFS MBRTB
National Weather Service Cheyenne WY
527 AM MST Mon Dec 1 2025

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

.DISCUSSION...

Cold temperatures will continue over the next few days, but we`ll
be in between weather system on Monday. Mostly sunny skies are
expected with any morning flurries tapering off by mid morning.
Another round of light snow and gusty winds is expected to begin
late tonight, but mainly later on Tuesday through Tuesday night.
Additional snow accumulations are likely.


.TODAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Max temperature.....15 to 20 degrees.
Min humidity........55 to 65 percent.
Wind (20 ft)........West winds 8 to 16 mph.
Mixing height.......2500 ft AGL.
Transport winds.....West 16 to 25 mph increasing to 23 to 30 mph
                    late in the afternoon.
Smoke dispersal.....good (60000 knot-ft).

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........29  29  22  22  22  13  13  13  23  23  23  32
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............1   2   4   8   12  15  16  17  18  16  15  12
RH..............91  91  91  83  76  70  70  67  64  70  70  80
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..8   8   9   10  12  13  14  15  16  16  16  16
20 FT wind gust.16  16  18  20  22  25  26  29  29  29  30  30
Mix hgt (kft)...0.3 0.3 0.5 1.2 1.4 2.2 2.4 2.5 2.5 2.3 1.6 0.7
Transp wind dir.NW  W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.18  16  17  20  20  23  23  25  28  30  29  23
SDspl kt-ft/10005   4   7   20  25  43  48  54  59  60  40  14

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (45-55 percent). Slight chance of
                    snow showers late in the evening. Chance of
                    snow after midnight.
CWR.................0 percent increasing to 10 percent early in the
                    morning.
Min temperature.....Around 10 above zero.
Max humidity........80 to 90 percent.
Wind (20 ft)........Southwest winds 15 to 25 mph with gusts to
                    around 35 mph.
Mixing height.......300 ft AGL.
Transport winds.....West 22 to 28 mph increasing to 32 to 37 mph
                    overnight.
Smoke dispersal.....Poor (6400 knot-ft).

TIME (MST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........32  32  51  51  51  40  40  40  58  58  58  59
Weather cov.....                    SCH SCH SCH SCH SCH SCH CHC
Weather type....                    SW  SW  SW  SW  SW  SW  SN
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   10
Temp............11  11  11  11  10  11  9   11  12  13  15  16
RH..............80  76  76  76  80  76  83  73  70  70  67  73
20 FT wind dir..W   W   W   W   W   W   W   SW  SW  SW  SW  SW
20 FT wind spd..16  16  17  17  18  18  18  17  17  16  16  15
20 FT wind gust.31  32  32  33  35  35  35  33  32  31  30  30
Mix hgt (kft)...0.6 0.4 0.3 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.6 0.8
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.22  23  22  24  24  26  28  28  32  36  37  37
SDspl kt-ft/100011  7   6   9   9   10  10  11  15  15  20  27

.TUESDAY...

Sky/weather.........Mostly cloudy (65-75 percent). Chance of snow,
                    then snow showers likely late in the afternoon.
CWR.................20 percent.
Max temperature.....Around 25 degrees.
Min humidity........60 to 75 percent.
Wind (20 ft)........West winds 12 to 22 mph with gusts to around 35
                    mph.
Mixing height.......1700 ft AGL.
Transport winds.....West 32 to 40 mph decreasing to 22 to 30 mph
                    late in the afternoon.
Smoke dispersal.....fair (50000 knot-ft).

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........59  59  57  57  57  63  63  63  82  82  82  78
Weather cov.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC LKY
Weather type....SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SW
Tstm cov........
CWR.............10  10  10  10  10  20  20  20  20  20  20  20
Temp............15  15  17  18  20  22  23  24  24  23  21  20
RH..............80  88  84  84  84  81  81  77  77  81  88  88
20 FT wind dir..W   W   SW  SW  SW  SW  SW  W   W   W   W   W
20 FT wind spd..16  16  16  16  16  17  16  16  15  14  12  12
20 FT wind gust.30  31  32  33  35  36  36  37  36  36  35  32
Mix hgt (kft)...0.8 0.8 1.3 1.4 1.5 1.6 1.7 1.7 1.7 1.5 1.2 0.9
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.40  37  40  39  38  36  33  32  30  28  24  22
SDspl kt-ft/100027  26  44  48  50  49  48  48  44  36  25  17

$$

Requested by...Parker Johnson
Type of request...PRESCRIBED
.TAG 2526627.0/CYS
.DELDT 12/01/25
.FormatterVersion 2.0.0
.EMAIL Parker.Johnson@usda.gov