Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
714
FNUS75 KRIW 092258
FWSRIW
Spot Forecast for COW CAMP...UNITED STATES WILDLAND FIRE SERVICE
National Weather Service Riverton WY
458 PM MDT Wed Sep 9 2026
Forecast is based on forecast start time of 0600 MDT on September 10.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Expect another dry day with temperatures increased by about five
degrees compared to Wednesday. Wind will increase by late morning,
becoming west to northwesterly through the afternoon with
occasional gusts to around 20 mph. Humidity will again drop down
into the low teens, with another night of poor recovery Thursday
night. Friday will see slightly cooler temperatures with humidity
not quite as low as a cold front pushes across the area. This may
lead to a period of gusty west to northwest winds during the
afternoon, as well as a low chance (10 percent) for showers.
Shower and thunderstorm chances increase for the weekend.
...Thunderstorms imply strong gusty and erratic winds...
.THURSDAY...
Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 74.
Min humidity........12 percent.
Wind (20 ft)........Light winds until 1100, then west to northwest
6 to 12 mph with gusts to around 20 mph.
Ridgetop wind.......South around 10 mph until 0800, then west.
Mixing height.......Increasing to 5,500 ft AGL by 1500.
Transport winds.....West 12 to 17 mph.
Smoke dispersal.....Poor increasing to good by 1300.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5 0 0 0 5 5 5 5 5 5 5 10
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............48 48 53 58 60 64 67 70 72 74 74 74
RH..............37 36 30 26 24 20 18 17 15 13 12 12
20 FT wind dir..S S SW W W W W W WNW WNW WNW NW
20 FT wind spd..6 6 6 6 6 8 9 10 10 10 10 9
20 FT wind gust.8 8 7 8 10 12 14 16 18 20 18 16
Ridge wind dir..S S SW W W W W W W W W NW
Ridge wind spd..10 10 10 10 15 15 15 15 15 15 15 15
Mix hgt (kft)...0.5 0.5 0.5 1.5 2.5 3.0 4.0 4.5 5.0 5.5 5.5 5.5
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.12 12 12 12 13 15 16 17 17 17 17 17
SDspl kt-ft/10005 5 5 13 25 40 54 68 76 83 84 79
.THURSDAY NIGHT...
Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 53.
Max humidity........31 percent.
Wind (20 ft)........West winds 7 to 11 mph with gusts to around 17
mph.
Ridgetop wind.......West 15 to 20 mph.
Mixing height.......Decreasing below 500 ft AGL after 2000.
Transport winds.....Northwest around 15 mph until 2000. West 14 to
18 mph after 2100.
Smoke dispersal.....Fair until 1900, then poor.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........10 10 15 15 10 10 10 10 15 20 20 15
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............72 67 63 60 60 59 56 55 55 54 54 54
RH..............13 16 17 18 19 20 23 24 25 25 24 25
20 FT wind dir..NW W W W W W W W W W W W
20 FT wind spd..8 8 8 8 8 7 8 8 9 10 10 11
20 FT wind gust.12 12 12 12 12 12 12 13 14 14 16 17
Ridge wind dir..NW W W W W W W W W W W W
Ridge wind spd..15 15 15 15 15 15 15 15 15 15 15 20
Mix hgt (kft)...3.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W NW N W W W W SW W W W W
Transp wind spd.15 15 15 15 15 14 15 15 16 17 17 18
SDspl kt-ft/100048 12 7 7 7 7 7 8 8 9 8 9
.FRIDAY...
Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...5 percent.
Max temperature.....Around 70.
Min humidity........22 percent.
Wind (20 ft)........West-northwest winds 10 to 15 mph with
gusts to around 24 mph.
Ridgetop wind.......West 15 to 20 mph.
Mixing height.......Increasing to 9000 ft AGL by 1500.
Transport winds.....West 18 to 23 mph.
Smoke dispersal.....Poor increasing to excellent by 1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5 30 25 15 20 25 35 35 35 35 35 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 5 5 5 10 10 10 10 10 10
Chc of thdr (%).0 0 0 0 0 0 0 5 5 5 5 5
Temp............54 53 54 58 61 64 66 68 69 69 69 68
RH..............28 31 30 28 27 27 26 24 22 22 22 24
20 FT wind dir..W SW W W W W WNW WNW WNW WNW WNW WNW
20 FT wind spd..11 13 13 12 12 13 13 13 13 14 15 15
20 FT wind gust.18 18 19 19 20 21 22 22 22 23 24 24
Ridge wind dir..W SW W W W W W W W W W W
Ridge wind spd..20 20 20 20 20 20 20 20 20 20 15 15
Mix hgt (kft)...0.5 0.5 1.5 2.5 4.0 5.0 6.5 7.0 8.0 9.0 8.0 7.0
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.18 21 21 20 20 21 23 23 23 23 21 18
SDspl kt-ft/10009 11 30 46 67 93 127 143 160 176 142 112
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Partly cloudy. Slight chance of showers and thunderstorms. Lows
in the mid 40s. Highs in the upper 60s. Minimum humidity around 36
percent. Southeast winds around 8 mph with gusts to 15 mph.
.SUNDAY...
Partly cloudy. Chance of showers and slight chance of thunderstorms.
Lows in the upper 40s. Highs in the mid 60s. Minimum humidity
around 29 percent. West winds 15 to 20 mph with gusts to near 30
mph.
.MONDAY...
Mostly clear. Slight chance of showers. Lows in the upper 30s.
Highs in the upper 50s. Minimum humidity around 24 percent. West
winds around 11 mph with gusts to around 20 mph.
$$
Forecaster...Myers
Requested by...Jon Warder
Type of request...WILDFIRE
.TAG 2621182.10/RIW
.DELDT 09/09/26
.FormatterVersion 2.0.0
.EMAIL Jonathan.Warder@usda.gov,wycdc@firenet.gov,kaden_mcelhinny@hotmail.com