Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
746
FNUS75 KRIW 102215
FWSRIW
Spot Forecast for COW CAMP...UNITED STATES WILDLAND FIRE SERVICE
National Weather Service Riverton WY
415 PM MDT Thu Sep 10 2026
Forecast is based on forecast start time of 0600 MDT on September 11.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Skies will remain mostly sunny through the afternoon, with a very
low chance for a shower after 1500. Winds will be slightly higher
than on Thursday, with gusts reaching 20 to 25 mph after 1100.
Humidity levels will not be as low as Thursday, likely remaining
above 25 percent through the afternoon.
A weak cold front will move in from the north just after sunset
Friday evening, bringing a brief push of north winds of 15 to 20
mph through 2400. Winds will decrease through the rest of the
night, holding under 5 mph. This cold front will bring colder
temperatures falling into the 40s. This front will also bring
more moisture near the surface, leading to humidity recovery
approaching 80 percent.
Cooler temperatures will continue on Saturday, with temperatures
in the low to mid 60s. With excellent humidity recovery
overnight, daytime humidity will only fall to around 30 percent
Saturday afternoon. Winds on Saturday will generally be light and
variable, holding under 5 mph.
.FRIDAY...
Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...7 percent.
Max temperature.....Around 70.
Min humidity........24 percent.
Wind (20 ft)........West winds 7 to 14 mph. Gusts up to 25 mph
in the afternoon.
Ridgetop wind.......West 15 to 20 mph.
Mixing height.......1000 ft AGL until 0900, then 8500 ft AGL.
Transport winds.....West 14 to 20 mph until 1200, then 24 to 28
mph.
Smoke dispersal.....Poor until 0900, then Excellent.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........35 40 45 50 35 20 10 15 25 35 35 40
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 10 10 10 10 0 0 0 0 10 10 10
Chc of thdr (%).0 0 0 0 0 0 0 0 0 10 10 10
Temp............55 54 56 59 60 63 66 67 69 70 69 68
RH..............35 39 38 38 39 36 32 30 24 24 24 26
20 FT wind dir..W W W W W W W W W W W NW
20 FT wind spd..7 8 8 9 10 11 12 13 14 14 13 11
20 FT wind gust.12 12 12 13 14 17 18 19 21 21 19 17
Ridge wind dir..W W W W W W W W W W W NW
Ridge wind spd..15 15 15 15 15 20 20 20 20 20 20 20
Mix hgt (kft)...0.5 0.5 1.0 2.5 3.5 4.5 7.0 8.5 8.5 8.5 7.5 7.5
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.14 15 15 17 17 20 26 28 26 25 25 24
SDspl kt-ft/10007 7 16 39 51 76 160 199 194 185 161 156
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (30-40 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...7 percent.
Min temperature.....Around 42.
Max humidity........82 percent.
Wind (20 ft)........Northwest winds 9 to 10 mph until 2000, then
east 7 to 13 mph until 0500, then light. Gusts
up to 23 mph.
Ridgetop wind.......Northwest around 15 mph until 2000, then east.
Mixing height.......6500 ft AGL until 1900, then 500 ft AGL.
Transport winds.....West 17 to 21 mph until 2100, then east 13 to
21 mph.
Smoke dispersal.....Very good until 1900. Poor after 2000.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........45 40 35 30 30 30 35 35 40 45 35 25
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 10 0 0 0 0 0 0 0 0 0 0
Chc of thdr (%).10 10 0 0 0 0 0 0 0 0 0 0
Temp............66 63 58 54 53 51 49 47 47 46 45 45
RH..............29 37 48 57 61 65 69 73 74 75 76 76
20 FT wind dir..NW N NE E E E E E E E E E
20 FT wind spd..9 10 12 13 12 11 9 8 8 7 7 6
20 FT wind gust.14 16 18 18 18 16 14 13 12 11 11 10
Ridge wind dir..NW N NE E E E E E E E E E
Ridge wind spd..15 15 20 20 20 20 15 15 15 15 15 15
Mix hgt (kft)...6.5 2.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W W NW E E E E E E E SE SE
Transp wind spd.21 17 20 21 20 18 16 15 15 14 14 13
SDspl kt-ft/1000120 31 11 10 9 9 8 7 7 6 6 5
.SATURDAY...
Sky/weather.........Mostly sunny (30-40 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...4 percent.
Max temperature.....Around 68.
Min humidity........32 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Southeast 10 to 15 mph until 1100, then
southwest.
Mixing height.......2000 ft AGL until 1100, then 6500 ft AGL.
Transport winds.....Southeast 9 to 13 mph until 1100, then
southwest 12 to 17 mph.
Smoke dispersal.....Poor until 1300, then very good.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25 40 30 20 20 20 20 25 30 35 40 50
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............44 42 43 47 51 55 59 63 66 67 68 67
RH..............79 82 78 69 61 55 49 41 36 32 30 31
20 FT wind dir..E E SE SE S SW SW SW SW SW SW S
20 FT wind spd..6 4 4 4 5 5 6 6 6 6 6 6
20 FT wind gust.10 6 6 6 7 8 10 10 11 12 12 11
Ridge wind dir..E E SE SE S SW SW SW SW SW SW S
Ridge wind spd..15 10 10 10 10 10 10 10 15 15 15 15
Mix hgt (kft)...0.5 0.5 1.0 1.5 2.0 2.5 3.5 4.5 5.5 6.5 5.5 4.5
Transp wind dir.SE SE SE S S SW SW SW W W SW SW
Transp wind spd.13 9 9 9 10 12 13 14 16 17 15 14
SDspl kt-ft/10006 4 7 10 18 27 37 53 76 96 72 55
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...
Partly cloudy. Slight chance of showers and thunderstorms. Lows
around 50. Highs in the lower 70s. Southeast winds around 8 mph.
.MONDAY...
Cooler. Mostly clear. Slight chance of showers. Lows in the mid
40s. Highs in the lower 60s. West winds around 11 mph.
.TUESDAY...
Mostly clear. Lows in the upper 30s. Highs around 60. East winds
around 7 mph.
$$
Forecaster...Straub
Requested by...Jon Warder
Type of request...WILDFIRE
.TAG 2621182.11/RIW
.DELDT 09/10/26
.FormatterVersion 2.0.0
.EMAIL kaden_mcelhinny@hotmail.com,wycdc@firenet.gov,Jonathan.Warder@usda.gov