090
FNUS75 KCYS 222028
FWSCYS

Spot Forecast for RFA Complex Rx...Camp Guernsey Fire Department
National Weather Service Cheyenne WY
228 PM MDT Thu May 22 2025

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

.DISCUSSION...
Overcast skies this weekend as a weather system moves through the region.
This system will bring beneficial rainfall to much of the area. Breezy
easterly to southeasterly winds expected Saturday gusting to around 15
to 20 mph, decreasing to around 10 mph overnight. Overnight humidity is
expected to recover to around 95 to 100 percent, with a daytime minimum
humidity of 60 to 65 percent on Saturday. Best precipitation chances are
expected between noon and 6pm Saturday, but precipitation chances remain
all day and night Saturday.

.SATURDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Rain showers
                    likely late in the morning, then rain showers
                    and slight chance of thunderstorms in the
                    afternoon.
CWR.................24 percent increasing to 73 percent in the
                    afternoon.
Max temperature.....Around 61.
Min humidity........65 percent.
Wind (20 ft)........East winds 8 to 9 mph. Gusty and erratic winds
                    expected near thunderstorms in the afternoon.
Mixing height.......1700 ft AGL.
Transport winds.....East 17 to 23 mph.
Smoke dispersal.....Poor (21000 knot-ft).

TIME (MDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........88  88  87  85  83  82  81  81
Weather cov.....LKY LKY DEF DEF DEF DEF DEF DEF
Weather type....RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........        SCH SCH SCH SCH SCH SCH
CWR.............20  20  70  70  70  70  70  70
Temp............56  58  59  60  61  61  61  60
RH..............83  75  72  69  65  65  65  67
20 FT wind dir..E   E   E   E   E   E   E   E
20 FT wind spd..9   9   9   9   9   9   9   8
20 FT wind gust.17  17  18  18  17  17  16  16
Mix hgt (kft)...1.4 1.5 1.6 1.7 1.7 1.7 1.7 1.6
Transp wind dir.E   E   E   E   E   E   E   E
Transp wind spd.17  17  18  20  22  23  23  23
SDspl kt-ft/100021  23  26  29  33  35  34  33

.SATURDAY NIGHT...

Sky/weather.........Mostly cloudy (80-90 percent). Rain showers and
                    chance of thunderstorms in the evening, then
                    rain showers likely and slight chance of
                    thunderstorms overnight.
CWR.................68 percent decreasing to 43 percent overnight.
Min temperature.....Around 48.
Max humidity........100 percent.
Wind (20 ft)........East winds 7 to 8 mph. Gusty and erratic winds
                    expected near thunderstorms early in the
                    evening. Gusty and erratic winds expected near
                    thunderstorms in the late evening and
                    overnight.
Mixing height.......1000 ft AGL.
Transport winds.....Southeast 13 to 22 mph decreasing to around 12
                    mph early in the morning.
Smoke dispersal.....Poor (12400 knot-ft).

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........82  85  88  90  89  87  85  85  85  86  86  86
Weather cov.....DEF DEF DEF DEF DEF DEF LKY LKY LKY LKY LKY LKY
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........CHC CHC CHC SCH SCH SCH SCH SCH SCH SCH SCH SCH
CWR.............70  70  70  70  70  70  40  40  40  40  40  40
Temp............59  57  55  54  53  52  52  51  51  50  49  49
RH..............69  75  80  83  86  86  86  89  89  93  96  96
20 FT wind dir..E   E   E   E   E   E   E   E   E   E   E   E
20 FT wind spd..8   8   8   8   7   7   7   7   7   7   7   7
20 FT wind gust.16  15  15  15  15  14  14  14  13  13  12  12
Mix hgt (kft)...1.5 1.3 1.1 1.0 1.1 1.3 1.4 1.4 1.2 1.1 1.2 1.2
Transp wind dir.E   E   E   E   SE  SE  SE  SE  SE  SE  SE  SE
Transp wind spd.22  20  18  16  15  14  14  14  13  13  13  12
SDspl kt-ft/100029  22  18  14  15  16  17  17  14  13  13  12

$$
Forecaster...Mose
Requested by...Nolan Woodruff
Type of request...PRESCRIBED
.TAG 2514538.0/CYS
.DELDT 05/22/25
.FormatterVersion 2.0.0
.EMAIL nolan.woodruff@wyo.gov