420
FNUS75 KRIW 092305
FWSRIW

Spot Forecast for Thompson Creek...Casper Dispatch
National Weather Service Riverton WY
505 PM MDT Sat Aug 9 2025

Forecast is based on forecast start time of 1700 MDT on August 09.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Northwest winds will begin to decrease in the next 2 to 3 hours,
with current winds 10 to 15 mph lowering to 5 mph or less by 2400.
Humidity is currently at its lowest point around 30 percent, and
will recover well overnight, reaching near 80 percent by sunrise.
Skies will gradually clear this evening, with no precipitation
expected.

Sunday will see clear skies early, becoming partly cloudy after
1400. Winds will be light and variable in the morning, before
northwest flow picks up around 1200. Gusts will be lighter, likely
not reaching above 10 mph through the day. No precipitation
expected.

...Thunderstorms imply strong gusty and erratic winds...

.REST OF TODAY...

Sky/weather.........Mostly sunny (45-55 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...1 percent.
Max temperature.....Around 78.
Min humidity........28 percent.
Wind (20 ft)........Northwest winds around 12 mph with gusts to
                    around 20 mph.
Ridgetop wind.......Northwest around 20 mph.
Mixing height.......8500 ft AGL.
Transport winds.....Northwest around 21 mph.
Smoke dispersal.....Excellent.

TIME (MDT)      5PM
Sky (%).........50
Weather cov.....
Weather type....
Tstm cov........
CWR.............0
Chc of pcpn (%).0
Chc of thdr (%).0
Temp............76
RH..............30
20 FT wind dir..NW
20 FT wind spd..12
20 FT wind gust.20
Ridge wind dir..NW
Ridge wind spd..20
Mix hgt (kft)...8.5
Transp wind dir.NW
Transp wind spd.21
SDspl kt-ft/1000157

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 54.
Max humidity........79 percent.
Wind (20 ft)........North winds 7 to 12 mph with gusts to around 20
                    mph until 2200, then light.
Ridgetop wind.......North 15 to 20 mph until 2300, then northwest
                    around 10 mph until 0400, then southwest.
Mixing height.......8000 ft AGL until 1900.
Transport winds.....Northwest 12 to 21 mph until 2400, then 8 to 10
                    mph until 0400, then southwest around 9 mph.
Smoke dispersal.....Very good until 2000. Poor after 2100.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........50  55  45  40  35  40  35  40  40  45  40  35
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............74  73  69  66  63  60  60  59  58  56  56  55
RH..............33  36  42  49  55  60  66  68  71  75  78  78
20 FT wind dir..NW  N   N   N   N   N   NW  NW  W   W   SW  SW
20 FT wind spd..12  11  9   7   6   6   5   4   4   3   4   4
20 FT wind gust.20  18  17  14  13  11  10  8   7   6   6   6
Ridge wind dir..NW  N   N   N   N   N   NW  NW  W   W   SW  SW
Ridge wind spd..20  20  15  15  15  10  10  10  10  10  10  10
Mix hgt (kft)...8.0 6.0 1.5 0.5 0.5 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.NW  NW  NW  N   N   N   N   NW  NW  NW  W   SW
Transp wind spd.20  21  16  14  13  12  10  9   9   8   9   9
SDspl kt-ft/1000137 112 23  4   4   2   1   1   1   1   2   1

.SUNDAY...

Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...9 percent.
Max temperature.....Around 79.
Min humidity........29 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Southwest around 10 mph until 1200, then light
                    until 1300, then northwest around 10 mph.
Mixing height.......9000 ft AGL after 1300.
Transport winds.....Southwest 8 to 10 mph until 1200, then west 7
                    to 10 mph.
Smoke dispersal.....Poor until 0900. Good after 1400.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30  25  20  10  10  10  10  20  35  45  40  35
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   0   10  10  10  10  0
Chc of thdr (%).0   0   0   0   0   0   0   10  10  10  10  0
Temp............54  56  61  66  70  73  76  77  78  79  79  78
RH..............79  75  68  58  49  41  35  33  31  29  30  32
20 FT wind dir..SW  SW  S   S   S   SW  W   NW  NW  NW  NW  NW
20 FT wind spd..4   3   4   5   4   3   2   3   5   5   5   5
20 FT wind gust.6   6   6   6   6   7   8   10  10  10  10  10
Ridge wind dir..SW  SW  S   S   S   SW  W   NW  NW  NW  NW  NW
Ridge wind spd..10  10  10  10  10  10  5   10  10  10  10  10
Mix hgt (kft)...0.1 0.1 0.5 1.5 3.5 5.5 7.0 8.5 9.0 8.5 8.0 8.0
Transp wind dir.SW  S   S   S   SW  W   W   W   W   W   W   W
Transp wind spd.9   8   9   10  9   8   7   8   10  10  10  10
SDspl kt-ft/10001   0   4   14  28  39  43  58  82  77  71  72

.FORECAST DAYS 3 THROUGH 5...
.MONDAY...
Partly cloudy. Lows in the mid 50s. Highs in the mid 80s. Light
winds.
.TUESDAY...
Mostly clear. Lows in the mid 50s. Highs in the lower 90s. Light
winds.
.WEDNESDAY...
Mostly clear. Lows in the upper 50s. Highs in the lower 90s.
South winds around 7 mph.

$$
Forecaster...Straub
Requested by...Cristopf Atkinson
Type of request...WILDFIRE
.TAG 2519634.0/RIW
.DELDT 08/09/25
.FormatterVersion 2.0.0
.EMAIL wycpc@blm.gov