Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
559
FNUS75 KRIW 041505
FWSRIW
Spot Forecast for YOURICK DRAW...USFS
National Weather Service Riverton WY
905 AM MDT Thu Sep 4 2025
Forecast is based on forecast start time of 0900 MDT on September 04.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Northwest winds increase between 0900L and 1000L to 11-15 mph with
frequent 20-25 mph gusts. A cold front will then trek across the area
between 1500L and 1600L and shift winds to be more northerly. Expect
winds to also increase behind the front with 15-20 mph winds and
frequent 30 mph gusts. This cold front will mostly be dry, however,
there is a 15-20 percent chance of an isolated shower or thunderstorm
between 1400L and 1700L. Winds diminish to less than 10 mph around
midnight tonight. Mixing and smoke dispersal will be very good to
excellent today.
Friday`s winds generally remain less than 15 mph with occasional 20
mph winds. Otherwise, expect higher relative humidity values and
cooler temperatures. Little to no precipitation chances Friday and
Saturday.
...Thunderstorms imply strong gusty and erratic winds...
.REST OF TODAY...
Sky/weather.........Sunny (20-30 percent). Areas of smoke through
the day. Slight chance of showers and
thunderstorms late in the afternoon.
CWR.................0 percent.
Chance of pcpn......20 percent.
Chance of thunder...15 percent.
Max temperature.....Around 69.
Min humidity........21 percent.
Wind (20 ft)........Northwest winds 11 to 15 mph until 1500. North
after 1700 15 to 20 mph. Gusts up to 30 mph.
Gusty and erratic winds expected near thunderstorms
late in the afternoon.
Ridgetop wind.......Northwest 20 to 25 mph.
Mixing height.......1000 ft AGL until 1000, then increasing to 10000 ft
AGL by 1300, then after 1600 decreasing to 7500 ft
AGL until 1700, then 5500 ft AGL.
Transport winds.....Northwest 18 to 21 mph until 1500, then 22 to
24 mph.
Smoke dispersal.....Poor until 1000, then good early in the morning
increasing to very good in the afternoon until
1200, then increasing to excellent in the afternoon
until 1700, then very good.
TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........0 5 15 20 30 35 45 45 50
Weather cov.....ARS ARS ARS ARS ARS ARS ARS ARS ARS
Weather type....SMK SMK SMK SMK SMK SMK SMK SMK SMK
Tstm cov........ SCH
CWR.............0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 10 10 10 10 20 10 10
Chc of thdr (%).0 0 0 10 10 10 20 10 10
Temp............60 65 66 68 68 67 66 63 61
RH..............26 22 21 19 20 22 24 28 35
20 FT wind dir..NW NW NW W W W W NW N
20 FT wind spd..11 11 11 11 13 12 14 14 16
20 FT wind gust.17 17 17 17 19 18 21 21 24
Ridge wind dir..NW NW NW W W W W NW N
Ridge wind spd..20 20 20 20 20 20 20 20 25
Mix hgt (kft)...1.0 4.5 6.5 8.0 9.0 10 9.0 7.5 5.5
Transp wind dir.N NW NW NW W W W NW NW
Transp wind spd.18 18 18 18 21 20 22 22 24
SDspl kt-ft/100012 69 103 130 165 168 171 145 111
.TONIGHT...
Sky/weather.........Partly cloudy (40-50 percent) then becoming
mostly cloudy (55-65 percent). Areas of smoke
in the evening and overnight.
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...6 percent.
Min temperature.....Around 35.
Max humidity........83 percent.
Wind (20 ft)........South winds around 14 mph with gusts to around
21 mph until 1900, then northwest around 13 mph
with gusts to around 19 mph until 2000, then
north 10 to 12 mph with gusts to around 18 mph
until 2300, then west until 0100, then light.
Ridgetop wind.......South around 20 mph until 1900, then northwest
until 0200, then southwest around 10 mph.
Mixing height.......3500 ft AGL until 1900.
Transport winds.....North 21 to 22 mph until 2000, then northeast
around 20 mph until 2200, then south 9 to 17
mph until 0400, then southwest around 9 mph.
Smoke dispersal.....Good until 1900. Poor after 2000.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40 40 45 35 45 45 45 45 50 55 60 60
Weather cov.....ARS ARS ARS ARS ARS ARS ARS ARS
Weather type....SMK SMK SMK SMK SMK SMK SMK SMK
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 10 10 0 0 0 0 0 0 0 0 0
Chc of thdr (%).10 10 10 0 0 0 0 0 0 0 0 0
Temp............57 54 51 47 44 41 40 38 37 37 36 35
RH..............42 50 59 64 69 71 74 76 79 81 81 81
20 FT wind dir..S NW N N N W SW SW S SW SW SW
20 FT wind spd..14 13 12 12 10 7 7 6 5 4 4 4
20 FT wind gust.21 19 18 18 16 11 11 10 7 6 6 6
Ridge wind dir..S NW N N N W SW SW S SW SW SW
Ridge wind spd..20 20 20 20 15 15 15 15 10 10 10 10
Mix hgt (kft)...3.5 1.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.NW N NE E SE S S S S S SW SW
Transp wind spd.22 21 20 20 17 14 14 13 10 9 9 9
SDspl kt-ft/100068 20 0 0 0 0 0 0 0 1 0 0
.FRIDAY...
Sky/weather.........Partly sunny (55-65 percent) then becoming
sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...6 percent.
Max temperature.....Around 55.
Min humidity........43 percent.
Wind (20 ft)........Light winds until 1100, then southeast 7 to 13
mph with gusts to around 19 mph.
Ridgetop wind.......Southwest 10 to 15 mph until 1200, then
southeast 15 to 20 mph.
Mixing height.......3000 ft AGL after 1400.
Transport winds.....West 8 to 17 mph until 1400, then south 18 to
21 mph until 1700, then southeast around 21
mph.
Smoke dispersal.....Poor until 1100. Poor early in the morning
increasing to fair in the afternoon after 1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........70 60 50 50 15 15 10 15 15 15 10 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 10 10 10 10 10 10
Chc of thdr (%).0 0 0 0 0 0 10 10 10 10 10 10
Temp............35 35 37 40 43 47 49 52 53 54 55 55
RH..............83 83 78 71 61 55 52 50 47 45 43 43
20 FT wind dir..W W W SW SW S S S SE SE SE SE
20 FT wind spd..3 4 4 5 6 7 9 10 11 12 13 13
20 FT wind gust. 6 6 7 8 11 14 16 17 18 19 19
Ridge wind dir..W W W SW SW S S S SE SE SE SE
Ridge wind spd..10 10 10 10 10 15 15 15 20 20 20 20
Mix hgt (kft)...0.1 0.1 0.1 0.5 1.0 1.0 1.5 2.0 3.0 3.0 2.5 2.0
Transp wind dir.W W SW SW W SW W SW SW S S SE
Transp wind spd.8 9 9 10 12 14 16 17 18 20 21 21
SDspl kt-ft/10000 0 0 3 8 13 24 33 44 48 42 38
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Mostly clear. Lows in the mid 30s. Highs around 60. Southwest
winds around 7 mph.
.SUNDAY...
Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
West winds around 8 mph.
.MONDAY...
Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 60s. West
winds around 12 mph.
$$
Forecaster...Gerhardt
Requested by...Cody Dispatch
Type of request...WILDFIRE
.TAG 2521314.0/RIW
.DELDT 09/04/25
.FormatterVersion 2.0.0
.EMAIL jacob.binns@bia.gov,wycdc@firenet.gov