230
FNUS75 KCYS 182321
FWSCYS

Spot Forecast for La Bonte Fire...BLM
National Weather Service Cheyenne WY
521 PM MDT Wed Sep 18 2024

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

.DISCUSSION...

Gusty west to southwest winds are expected this evening and most of the
overnight. Frequent gusts of 30 to 40 MPH are likely, which will limit
overnight humidity recoveries. Max RHs will be around 60 percent. Winds will
begin to ease early Thursday morning. No storms expected on Thursday.
Minimum RHs will fall to about 25 percent with westerly winds at 10 to 15 MPH.
Gusts of 20 to 25 MPH will be possible. Southerly winds Thursday night will
lead to poor overnight humidity recoveries around 40 percent.

.REST OF TODAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....Around 68.
Min humidity........24 percent.
Wind (20 ft)........Breezy. West winds around 28 mph with gusts to
                    around 44 mph.
Mixing height.......7500 ft AGL.
Transport winds.....West around 35 mph.
Smoke dispersal.....Excellent (223800 knot-ft).
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

TIME (MDT)      5PM
Sky (%).........22
Weather cov.....
Weather type....
Tstm cov........
CWR.............0
LAL.............1
Temp............66
RH..............25
20 FT wind dir..W
20 FT wind spd..28
20 FT wind gust.44
Mix hgt (kft)...7.5
Transp wind dir.W
Transp wind spd.35
Haines index....2
SDspl kt-ft/1000242

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....Around 50.
Max humidity........60 percent.
Wind (20 ft)........West winds 14 to 24 mph with gusts to around 37
                    mph decreasing to 13 to 15 mph after 3 am.
Mixing height.......1400 ft AGL.
Transport winds.....West 28 to 37 mph decreasing to 25 to 26 mph
                    overnight.
Smoke dispersal.....Excellent (231400 knot-ft) early in the evening
                    decreasing to very good (126100 knot-ft) late
                    in the night decreasing to very good (111000
                    knot-ft) early in the evening decreasing to
                    poor (31000 knot-ft) late in the night in the
                    late evening and overnight.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........14  13  11  8   8   10  7   5   6   7   8   5
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............65  63  59  58  57  55  54  54  53  53  52  51
RH..............26  29  34  37  39  44  47  49  49  51  53  54
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..24  22  20  18  17  17  16  16  15  14  15  13
20 FT wind gust.37  33  30  29  28  26  24  25  24  21  23  21
Mix hgt (kft)...7.0 6.2 5.1 4.1 3.3 2.7 2.2 1.9 1.7 1.6 1.4 1.4
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.36  36  37  37  33  31  29  28  26  26  26  25
Haines index....2   2   2   2   2   2   2   2   2   2   2   2
SDspl kt-ft/1000231 209 178 143 111 84  65  54  48  45  40  40

.THURSDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....Around 72.
Min humidity........23 percent.
Wind (20 ft)........West winds 12 to 15 mph.
Mixing height.......9800 ft AGL.
Transport winds.....Northwest 17 to 26 mph shifting to the west 13
                    to 15 mph in the afternoon.
Smoke dispersal.....Poor (36600 knot-ft) early in the morning
                    increasing to very good (113300 knot-ft) in the
                    afternoon.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5   6   3   3   2   2   2   4   6   7   8   7
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............51  50  53  56  61  64  66  68  70  71  72  71
RH..............57  60  53  48  39  35  33  30  27  25  23  24
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..15  14  15  14  13  13  13  14  14  14  14  12
20 FT wind gust.23  22  23  22  21  20  20  22  22  21  21  18
Mix hgt (kft)...1.6 2.2 3.1 4.1 5.0 5.9 6.8 7.7 8.5 9.0 9.6 9.8
Transp wind dir.W   NW  NW  NW  NW  W   W   W   W   W   W   SW
Transp wind spd.25  26  26  26  24  21  17  15  14  13  13  13
Haines index....2   2   2   2   2   2   2   2   2   2   2   2
SDspl kt-ft/100045  61  83  104 113 113 109 108 107 106 109 110

$$
Forecaster...Fuller
Requested by...Chris Colt/Anna Sammer
Type of request...WILDFIRE
.TAG 2422495.2/CYS
.DELDT 09/18/24
.FormatterVersion 2.0.0
.EMAIL 2024.labonte.plans@firenet.gov