Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
339
FNUS75 KRIW 050136
FWSRIW
Spot Forecast for COW CAMP...UNITED STATES WILDLAND FIRE SERVICE
National Weather Service Riverton WY
736 PM MDT Fri Sep 4 2026
Forecast is based on forecast start time of 0600 MDT on September 05.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Conditions will be more stable during the day Saturday, with
improved conditions compared to Friday. Southwest winds will gust
15 to 20 mph during the afternoon, increasing around 1400L. After
modest humidity recovery to around 40 percent overnight, Saturday
humidity levels will fall below 20 percent by 1200, and hover
between 15 and 20 percent through the afternoon. Gusty winds and
elevated mixing heights will allow for excellent smoke dispersal
through the afternoon. Skies remain clear through the day.
Sunday conditions will be similar to Saturday, with stable
conditions and mostly clear skies. Winds will be slightly lower
during the afternoon, but still gust near 15 mph at times.
Humidity will again fall to around 15 percent through the
afternoon.
...Thunderstorms imply strong gusty and erratic winds...
.SATURDAY...
Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 78.
Min humidity........19 percent.
Wind (20 ft)........Light winds until 1000. Winds southwest 7 to 11
mph with gusts to around 18 mph after 1100.
Ridgetop wind.......Southwest 10 to 15 mph until 1500, then 15 to
20 mph.
Mixing height.......2000 ft AGL until 1000, then 9500 ft AGL.
Transport winds.....South 10 to 15 mph until 1000, then southwest
15 to 20 mph.
Smoke dispersal.....Poor until 0900, increasing to excellent in the
afternoon.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5 15 5 0 0 0 5 5 5 0 0 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............61 59 62 64 67 70 73 74 76 77 77 78
RH..............34 35 30 29 29 27 25 25 22 20 19 18
20 FT wind dir..S S S SW W W SW SW SW SW SW SW
20 FT wind spd..6 6 6 6 6 7 8 9 10 11 11 10
20 FT wind gust.10 8 10 10 11 13 14 16 17 18 18 17
Ridge wind dir..S S S SW W W SW SW SW SW SW SW
Ridge wind spd..15 10 10 10 15 15 15 15 15 20 20 15
Mix hgt (kft)...0.5 0.5 0.5 2.0 3.5 5.5 7.0 8.0 8.5 9.0 9.5 9.0
Transp wind dir.S S S SW W SW SW SW SW SW SW SW
Transp wind spd.13 12 12 13 15 18 20 20 20 20 20 18
SDspl kt-ft/10006 5 7 21 46 91 119 136 144 153 158 146
.SATURDAY NIGHT...
Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 57.
Max humidity........40 percent.
Wind (20 ft)........Southwest winds around 9 mph with gusts to
around 16 mph until 1900, then light until
2100, then east 7 to 9 mph until 0200, then
light.
Ridgetop wind.......Southwest around 15 mph until 2000. Southeast
after 2100.
Mixing height.......8000 ft AGL until 1900, then 500 ft AGL.
Transport winds.....Southwest 13 to 18 mph until 2100, then
southeast 10 to 16 mph until 0400, then south
around 9 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 (%).........5 5 5 15 10 15 10 5 10 10 15 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............76 74 70 66 65 65 64 63 62 60 59 59
RH..............19 22 25 27 30 30 32 34 35 36 37 38
20 FT wind dir..SW SW S E E E E E SE SE SE SE
20 FT wind spd..9 6 6 7 8 8 9 8 6 5 4 4
20 FT wind gust.16 11 11 10 12 12 12 11 10 7 6 6
Ridge wind dir..SW SW S E E E E E SE SE SE SE
Ridge wind spd..15 15 15 15 15 15 15 15 15 10 10 10
Mix hgt (kft)...8.0 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.SW SW SW SE E S SE SE S S S S
Transp wind spd.18 13 13 14 15 15 16 15 13 10 9 9
SDspl kt-ft/1000131 24 7 6 7 7 8 7 6 4 4 4
.SUNDAY...
Sky/weather.........Mostly sunny (30-40 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...1 percent.
Max temperature.....Around 77.
Min humidity........20 percent.
Wind (20 ft)........Light winds until 1300, then southwest 7 to 11
mph with gusts to around 17 mph.
Ridgetop wind.......Southeast around 10 mph until 0700,
then southwest 10 to 15 mph until 1700
then around 20 mph.
Mixing height.......1500 ft AGL until 1000, then 10000 ft AGL.
Transport winds.....Southwest 10 to 15 mph until 1600, then around 20
mph.
Smoke dispersal.....Poor until 1000, then very good.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5 30 20 15 15 15 15 25 30 40 50 60
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............58 57 59 63 66 70 73 75 76 77 76 76
RH..............40 39 36 32 30 28 26 24 21 20 19 19
20 FT wind dir..SE SE S SW SW SW SW SW SW SW SW SW
20 FT wind spd..3 2 2 2 3 5 6 7 8 9 10 11
20 FT wind gust.5 5 5 5 6 7 10 11 13 14 16 17
Ridge wind dir..SE SE S SW SW SW SW SW SW SW SW SW
Ridge wind spd..10 5 5 5 10 10 15 15 15 15 15 20
Mix hgt (kft)...0.5 0.5 1.0 1.5 3.0 5.0 6.5 7.5 9.0 10 9.0 8.5
Transp wind dir.S S S SW SW SW SW SW SW SW SW SW
Transp wind spd.8 7 7 7 8 10 13 14 15 16 17 18
SDspl kt-ft/10004 3 7 10 23 44 72 92 115 140 137 133
.FORECAST DAYS 3 THROUGH 5...
.LABOR DAY...
Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 50s. Highs around 70. Southwest
winds around 17 mph.
.TUESDAY...
Mostly clear. Lows in the upper 40s. Highs in the mid 60s. West
winds around 15 mph.
.WEDNESDAY...
Mostly clear. Lows in the upper 40s. Highs around 70. Light
winds.
$$
Forecaster...Straub
Requested by...Shelby Bell
Type of request...WILDFIRE
.TAG 2621182.2/RIW
.DELDT 09/04/26
.FormatterVersion 2.0.0
.EMAIL wycdc@firenet.gov,kaden_mcelhinny@hotmail.com