Spot Forecast
Issued by NWS Cheyenne, WY
Issued by NWS Cheyenne, WY
740
FNUS75 KCYS 081216
FWSCYS
Spot Forecast for 2026 Guernsey Training...Eastern Colorado Incident Management Team
National Weather Service Cheyenne WY
616 AM MDT Fri May 8 2026
If conditions become unrepresentative, contact the National Weather
Service at (307) 772-2227.
.DISCUSSION...Upper level disturbance will move out of the area early this
morning with drier air moving into the high plains behind it. Precipitation
chance are much lower today, but a better chance for showers and thunderstorms
expected on Saturday ahead of the next cold front.
.REST OF TODAY...
Sky/weather.........Mostly sunny (20-30 percent). A few light sprinkles
possible in the afternoon.
CWR.................0 percent.
Max temperature.....67 to 72 degrees.
Min humidity........23 to 30 percent.
Wind (20 ft)........Northwest winds 7 to 14 mph.
Mixing height.......9000 ft AGL.
Transport winds.....Northwest 13 to 20 mph.
Smoke dispersal.....Very good (100700 knot-ft).
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........21 21 19 19 19 20 20 20 32 32 32
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0
Temp............47 49 54 60 63 64 66 68 69 70 70
RH..............77 74 62 47 38 34 30 27 26 26 25
20 FT wind dir..NW NW NW NW NW NW NW NW NW NW N
20 FT wind spd..7 8 8 9 9 9 9 8 8 7 7
20 FT wind gust.14 15 16 17 17 18 17 16 15 14 14
Mix hgt (kft)...0.6 1.4 2.7 4.4 6.7 7.8 8.5 9.0 9.0 8.9 8.3
Transp wind dir.NW NW N N N NW NW NW NW NW NW
Transp wind spd.13 17 18 17 17 16 17 18 20 20 18
SDspl kt-ft/10007 22 43 66 101 110 128 144 153 151 132
.TONIGHT...
Sky/weather.........Partly cloudy (35-45 percent) then becoming
mostly cloudy (50-60 percent).
CWR.................0 percent.
Min temperature.....40 to 45 degrees.
Max humidity........60 to 75 percent.
Wind (20 ft)........North winds around 5 mph becoming light and
variable in the late evening and overnight.
Mixing height.......400 ft AGL.
Transport winds.....Northwest 14 to 20 mph shifting to the north
around 8 mph early in the evening.
Smoke dispersal.....fair (57000 knot-ft).
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........35 35 35 48 48 48 51 51 51 54 54 54
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............70 69 65 59 57 54 53 52 50 48 47 47
RH..............26 26 29 36 38 45 48 50 54 58 59 61
20 FT wind dir..N N NE NE E SE SE S S SW W NW
20 FT wind spd..7 7 6 5 3 3 2 2 2 2 2 3
20 FT wind gust.14 12 10 9 8 7 6 6 6 6 6 8
Mix hgt (kft)...7.5 4.8 0.6 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.NW NW N SW S S SW SW NW NW W N
Transp wind spd.18 14 8 7 8 8 7 6 6 6 6 8
SDspl kt-ft/1000121 57 4 3 3 3 3 2 2 2 2 3
.SATURDAY...
Sky/weather.........Partly sunny (60-70 percent). Isolated rain
showers in the morning, then numerous rain
showers and a chance of thunderstorms in the
afternoon.
CWR.................5 percent increasing to 30 percent in the
afternoon.
Max temperature.....65 to 70 degrees.
Min humidity........35 to 45 percent.
Wind (20 ft)........North winds 5 to 12 mph. Gusty and erratic
winds expected near thunderstorms in the
afternoon.
Mixing height.......5800 ft AGL.
Transport winds.....North 9 to 17 mph shifting to the northwest 20
to 23 mph late in the afternoon.
Smoke dispersal.....Poor (3500 knot-ft) early in the morning
increasing to good (84800 knot-ft) in the
afternoon.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........59 59 59 66 66 66 69 69 69 61 61 61
Weather cov.....ISO ISO ISO ISO ISO ISO SCT SCT SCT NUM NUM NUM
Weather type....RW RW RW RW RW RW RW RW RW RW RW RW
Tstm cov........ CHC CHC CHC CHC CHC CHC
CWR.............10 10 10 10 10 10 30 30 30 30 30 30
Temp............45 48 51 57 63 63 64 64 62 64 62 61
RH..............64 63 58 50 40 40 40 41 45 44 46 46
20 FT wind dir..NW NW NW NW NW N N N N N N N
20 FT wind spd..5 7 8 10 10 10 10 10 10 12 12 12
20 FT wind gust.9 13 16 18 20 20 20 20 20 21 21 22
Mix hgt (kft)...0.4 0.6 1.1 2.0 4.2 5.8 5.7 5.3 4.9 4.1 4.1 4.5
Transp wind dir.NW N N N N N N N N NW NW NW
Transp wind spd.9 12 13 15 14 15 17 16 20 22 23 21
SDspl kt-ft/10004 6 12 26 51 75 85 74 83 79 82 82
$$
Requested by...Mark Boddy
Type of request...PRESCRIBED
.TAG 2612784.4/CYS
.DELDT 05/08/26
.FormatterVersion 2.0.0
.EMAIL mark.boddy@ecimt.org