National Weather Service Text Product
AFOS product FWSCYS
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: FWSCYS
Product Timestamp: 2025-09-26 16:10 UTC
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059
FNUS75 KCYS 261610
FWSCYS
Spot Forecast for Carnegie RX...NPS
National Weather Service Cheyenne WY
1010 AM MDT Fri Sep 26 2025
If conditions become unrepresentative, contact the National Weather
Service at (307) 772-2227
.DISCUSSION...
Dry conditions are expected through the weekend with min RH values
dipping down into the lower to mid 20s during the afternoon hours
with good overnight recovery. Highs Saturday will top out into the
upper 70s and slightly warmer on Sunday with highs in the mid 80s.
Expect southerly winds 10 to 15 mph, gusting up to 25 mph. Into
next week, weather conditions will continue to remain dry with
highs in the mid 70s to lowers 80s and min RH values generally in
the low to mid 20s.
.SATURDAY...
Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Max temperature.....Around 78.
Min humidity........23 percent.
Wind (20 ft)........Southeast winds 5 to 12 mph.
Mixing height.......4300 ft AGL.
Transport winds.....South 9 to 18 mph increasing to around 20 mph
in the afternoon.
Smoke dispersal.....Poor (5200 knot-ft) early in the morning
increasing to good (72700 knot-ft) in the
afternoon.
TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........4 2 2 2 2 3 4 5 5 5
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0
Temp............50 56 66 69 73 74 76 77 76 74
RH..............66 57 38 33 27 25 23 24 25 29
20 FT wind dir..SE SE SE S S S S S S S
20 FT wind spd..5 6 7 9 10 12 12 12 12 12
20 FT wind gust.8 10 13 15 17 20 20 21 21 22
Mix hgt (kft)...0.7 1.3 1.9 2.6 3.3 3.8 4.2 4.3 3.8 3.1
Transp wind dir.SE SE S S S S S S S S
Transp wind spd.9 10 13 16 18 20 20 20 20 20
SDspl kt-ft/10005 11 21 37 52 65 72 73 65 52
.SATURDAY NIGHT...
Sky/weather.........Clear (0-10 percent).
CWR.................0 percent.
Min temperature.....Around 48.
Max humidity........89 percent.
Wind (20 ft)........South winds 7 to 12 mph.
Mixing height.......800 ft AGL.
Transport winds.....South 20 to 22 mph.
Smoke dispersal.....Poor (12900 knot-ft).
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........5 5 5 5 4 3 3 3 4 4 5 5
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............72 68 63 58 57 56 54 53 52 51 50 50
RH..............33 39 46 57 59 64 69 71 77 80 83 86
20 FT wind dir..S S S S S S S S S S S S
20 FT wind spd..12 12 12 12 12 12 10 10 10 9 8 7
20 FT wind gust.22 22 22 22 21 20 18 17 17 16 15 14
Mix hgt (kft)...2.3 1.7 1.3 1.0 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
Transp wind dir.S S S S S S S S S S S S
Transp wind spd.20 20 21 21 21 22 22 21 21 20 20 20
SDspl kt-ft/100039 30 23 17 15 15 15 14 15 14 13 13
.SUNDAY...
Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Max temperature.....Around 85.
Min humidity........26 percent.
Wind (20 ft)........South winds 7 to 12 mph.
Mixing height.......8400 ft AGL.
Transport winds.....South 16 to 20 mph.
Smoke dispersal.....Poor (12500 knot-ft) early in the morning
increasing to good (93600 knot-ft) in the
afternoon increasing to good (62200 knot-ft)
early in the morning increasing to very good
(125600 knot-ft) in the afternoon late in the
afternoon.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........6 7 6 6 8 11 13 23 34 44 47 51
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............49 53 57 61 69 75 79 82 84 84 83 80
RH..............89 83 77 72 55 43 35 29 27 26 27 31
20 FT wind dir..S S S S S S S S S S S S
20 FT wind spd..7 7 7 8 9 10 12 12 12 12 12 10
20 FT wind gust.12 15 17 18 20 22 23 23 23 23 23 24
Mix hgt (kft)...0.8 0.8 0.9 1.3 1.9 2.8 3.9 5.8 7.6 8.4 6.9 4.4
Transp wind dir.S S S S S S S S S S S S
Transp wind spd.20 18 17 16 16 17 18 18 17 17 16 16
SDspl kt-ft/100013 13 14 18 26 42 63 94 115 126 96 62
$$
Forecaster...Zawislak
Requested by...Kenn Perreault
Type of request...PRESCRIBED
.TAG 2522585.0/CYS
.DELDT 09/26/25
.FormatterVersion 2.0.0
.EMAIL ian_muirhead@nps.gov,kenn_perreault@nps.gov