Text Products for FWS Issued by CYS

Spot Forecast
Issued by NWS Cheyenne, WY
Versions: 1 2 3 4 5 6 7 8
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FNUS75 KCYS 121242
FWSCYS

Spot Forecast for Collins Rx...USDA Forest Service
National Weather Service Cheyenne WY
642 AM MDT Fri Apr 12 2024

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

.DISCUSSION...
Above average temperatures for mid-April expected today through
the weekend. Afternoon RHs will drop around 20 percent today and
into the high teens Saturday and Sunday. South winds gusting up to
30 mph will continue this morning along the Pine Ridge before
weakening and turning out of the southwest in the afternoon. Winds
will begin to turn out of the northwest midday Saturday with gusts
around 25 mph. The next chance for precipitation will begin early
next week with colder weather arriving later in the week.


.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....Around 75.
Min humidity........21 percent.
Wind (20 ft)........South winds 8 to 17 mph.
Mixing height.......9700 ft AGL.
Transport winds.....South 16 to 24 mph shifting to the southwest 13
                    to 16 mph in the afternoon.
Smoke dispersal.....Poor (13900 knot-ft) early in the morning
                    increasing to very good (104200 knot-ft) in the
                    afternoon increasing to very good (124700
                    knot-ft) late in the afternoon.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (MDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5   4   4   4   3   3   5   5   7   9   11
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1   1
Temp............35  38  46  51  57  61  65  70  73  74  75
RH..............64  59  49  42  38  36  31  25  23  21  21
20 FT wind dir..S   S   S   S   S   S   S   SW  SW  SW  S
20 FT wind spd..13  15  17  16  15  13  10  10  9   8   8
20 FT wind gust.20  23  26  24  22  20  17  16  15  14  13
Mix hgt (kft)...0.7 0.9 1.2 1.4 1.9 2.7 4.5 6.4 8.1 9.2 9.7
Transp wind dir.S   S   S   S   S   S   SW  SW  W   W   W
Transp wind spd.23  24  23  21  16  13  13  14  15  15  16
Haines index....4   4   4   4   4   5   5   5   5   5   5
SDspl kt-ft/100014  18  24  25  26  31  49  76  104 125 136

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....Around 47.
Max humidity........51 percent.
Wind (20 ft)........South winds 6 to 15 mph.
Mixing height.......400 ft AGL.
Transport winds.....Southwest around 16 mph shifting to the south
                    17 to 26 mph.
Smoke dispersal..... very good (131200 knot-ft) early in the
                    evening decreasing to fair (52400 knot-ft) late
                    in the night decreasing to poor (7400 knot-ft)
                    in the late evening and overnight.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........13  14  15  18  18  16  14  17  26  24  25  29
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............74  69  64  59  57  56  55  54  53  51  50  49
RH..............23  28  31  37  38  38  40  41  41  44  46  46
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   SW
20 FT wind spd..6   7   9   9   12  14  15  15  14  14  13  10
20 FT wind gust.10  12  14  15  17  21  23  23  21  21  18  16
Mix hgt (kft)...9.2 6.8 3.8 1.3 0.4 0.4 0.6 0.5 0.5 0.6 0.6 0.7
Transp wind dir.SW  SW  S   S   S   S   S   S   S   S   SW  SW
Transp wind spd.16  16  16  16  20  23  26  25  24  22  20  17
Haines index....5   5   5   5   5   5   5   5   5   5   5   5
SDspl kt-ft/1000131 96  52  18  7   8   14  12  11  11  11  10

.SATURDAY...

Sky/weather.........Mostly sunny (25-35 percent).
CWR.................1 percent.
LAL.................1.
Max temperature.....Around 81.
Min humidity........19 percent.
Wind (20 ft)........Southwest winds 7 to 9 mph shifting to the
                    northwest 13 to 16 mph in the late morning and
                    afternoon.
Mixing height.......9500 ft AGL increasing to 16300 ft AGL late in
                    the afternoon.
Transport winds.....Southwest 14 to 16 mph shifting to the west 13
                    to 17 mph in the late morning and afternoon.
Smoke dispersal.....Poor (4500 knot-ft) early in the morning
                    increasing to good (90000 knot-ft) in the
                    afternoon increasing to very good (139100
                    knot-ft) early in the morning increasing to
                    excellent (232400 knot-ft) in the afternoon in
                    the afternoon.
Haines Index........5 to 6 or moderate to high potential for large
                    plume dominated fire growth.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........26  32  30  29  28  37  39  38  36  33  28  23
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............47  50  54  60  66  70  74  77  79  81  80  79
RH..............51  48  48  42  36  31  27  24  21  19  20  21
20 FT wind dir..SW  SW  SW  W   W   W   W   W   NW  NW  NW  NW
20 FT wind spd..9   8   7   9   13  15  15  16  16  15  14  13
20 FT wind gust.14  14  12  15  20  23  23  25  25  23  22  20
Mix hgt (kft)...0.7 0.5 0.4 0.8 2.0 3.9 6.2 9.5 13  15  16  16
Transp wind dir.SW  SW  W   W   W   W   NW  W   W   W   W   W
Transp wind spd.16  14  14  13  14  15  16  17  16  16  16  16
Haines index....6   6   6   6   6   6   5   5   5   5   5   5
SDspl kt-ft/100010  6   5   10  24  52  90  139 186 216 232 227

.FORECAST DAYS 3 THROUGH 7...
.SUNDAY...
Mostly clear. Lows in the mid 40s. Highs in the upper 70s.
Southwest winds around 8 mph.
.MONDAY...
Mostly clear. Chance of showers. Lows in the upper 40s. Highs in
the mid 70s. Southeast winds around 11 mph.
.TUESDAY...
Cooler. Mostly cloudy. Showers likely and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the upper 50s. North
winds around 19 mph.
.WEDNESDAY...
Cooler. Mostly cloudy. Chance of showers and snow showers. Lows
in the mid 30s. Highs in the upper 40s.
.THURSDAY...
Mostly cloudy. Chance of showers and snow showers. Lows in the
upper 20s. Highs in the lower 40s.

$$
Forecaster...Brothers
Requested by...Ben Jech
Type of request...PRESCRIBED
.TAG 2410466.0/CYS
.DELDT 04/12/24
.FormatterVersion 2.0.0
.EMAIL benjamin.j.jech@usda.gov
National Weather Service Weather Forecast Office
