Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
559
FNUS75 KRIW 240244
FWSRIW
Spot Forecast for Billie Creek...IA CPC
National Weather Service Riverton WY
844 PM MDT Sun Aug 23 2026
Forecast is based on forecast start time of 2100 MDT on August 23.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Increasing clouds through the rest of the night, becoming mostly
cloudy after 0400. There is a 10% chance for a shower between 2100
and 0200. Winds will stay elevated through the night, staying
west-northwest 10 to 15 mph through 0600. Skies will scatter out
after sunrise, staying partly cloudy after 1000. Winds will turn
east-northeast by this time, increasing to 10 to 15 mph after
1200. Conditions will remain dry through the day. Clouds will
increase late in the afternoon into the evening, with a 10% chance
for a shower or thunderstorm between 1800 and 2300.
...Thunderstorms imply strong gusty and erratic winds...
.REST OF TONIGHT...
Sky/weather.........Partly cloudy (35-45 percent) then becoming
mostly cloudy (55-65 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...6 percent.
Min temperature.....Around 62.
Max humidity........46 percent.
Wind (20 ft)........West winds 7 to 10 mph.
Ridgetop wind.......West around 15 mph.
Mixing height.......500 ft AGL.
Transport winds.....West 14 to 17 mph.
Smoke dispersal.....Poor.
TIME (MDT) 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........30 35 45 40 35 40 45 55 65
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 10 10 10 10 10 10 10 10
Chc of thdr (%).10 10 10 0 0 0 0 0 0
Temp............72 70 68 68 66 65 65 64 64
RH..............38 39 42 42 43 45 46 46 46
20 FT wind dir..W NW W W W W W W W
20 FT wind spd..7 7 8 9 9 10 10 9 8
20 FT wind gust.10 10 12 13 13 14 14 13 12
Ridge wind dir..W NW W W W W W W W
Ridge wind spd..15 15 15 15 15 15 15 15 15
Mix hgt (kft)...0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W W W W W W W W W
Transp wind spd.14 14 15 16 16 17 17 16 15
SDspl kt-ft/10006 6 7 7 7 8 8 7 7
.MONDAY...
Sky/weather.........Mostly sunny (35-45 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...11 percent.
Max temperature.....Around 74.
Min humidity........30 percent.
Wind (20 ft)........West winds around 8 mph until 0700, then light
until 1200, then northeast 7 to 8 mph.
Ridgetop wind.......West 10 to 15 mph until 0900, then northeast.
Mixing height.......2000 ft AGL until 1000. 7500 ft AGL after 1400.
Transport winds.....West 10 to 15 mph.
Smoke dispersal.....Poor until 0900. Good after 1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........45 60 45 45 30 35 30 25 25 25 20 30
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 10 10 10 10 10 10 10 10 10 10 10
Chc of thdr (%).0 0 0 0 0 0 0 0 10 10 10 10
Temp............64 64 67 69 69 70 71 73 74 74 74 74
RH..............45 39 38 37 36 35 34 33 32 30 30 33
20 FT wind dir..W W NW NE NE NE E NE NE NE NE NE
20 FT wind spd..8 6 6 4 5 6 7 7 8 8 7 7
20 FT wind gust.12 10 7 6 6 7 10 10 12 12 10 10
Ridge wind dir..W W NW NE NE NE E NE NE NE NE NE
Ridge wind spd..15 15 10 10 10 10 15 15 15 15 15 15
Mix hgt (kft)...0.5 0.5 0.5 2.0 2.5 3.5 4.5 5.5 7.5 7.5 7.5 7.0
Transp wind dir.W W NW NW W W W W W W W W
Transp wind spd.15 13 12 10 10 12 14 14 15 15 14 14
SDspl kt-ft/10007 6 7 18 23 37 57 68 95 98 90 84
.MONDAY NIGHT...
Sky/weather.........Mostly cloudy (55-65 percent) then becoming
partly cloudy (35-45 percent) by 0100 then
becoming mostly cloudy (60-70 percent) again
by 0500. Slight chance of showers and
thunderstorms early in the evening.
CWR.................0 percent.
Chance of pcpn......20 percent.
Chance of thunder...11 percent.
Min temperature.....Around 60.
Max humidity........45 percent.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
near thunderstorms early in the evening.
Ridgetop wind.......East 10 to 15 mph until 2000, then northwest.
Mixing height.......6000 ft AGL until 1900. 500 ft AGL after 2000.
Transport winds.....Northwest around 13 mph until 1900, then
northeast 10 to 12 mph until 2100, then north.
Smoke dispersal.....Good until 1900. Poor after 2000.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........50 50 55 60 60 55 50 30 35 45 45 65
Weather cov..... SCH
Weather type.... RW
Tstm cov........ SCH
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 10 20 0 0 0 0 0 0 0 0 10
Chc of thdr (%).10 10 10 0 0 0 0 0 0 0 0 0
Temp............74 72 70 66 65 64 64 64 63 62 62 62
RH..............34 39 43 44 44 45 45 45 44 44 44 44
20 FT wind dir..NE SE NW W NW NW NW NW NW NW NW NW
20 FT wind spd..6 5 6 6 6 6 6 5 6 5 5 5
20 FT wind gust.10 7 8 8 7 7 7 6 7 6 6 7
Ridge wind dir..NE SE NW W NW NW NW NW NW NW NW NW
Ridge wind spd..15 10 10 10 10 10 10 10 10 10 10 10
Mix hgt (kft)...6.0 2.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.NW NE N N N N N N N N NW N
Transp wind spd.13 10 12 12 12 12 12 10 12 10 10 10
SDspl kt-ft/100064 22 7 5 5 5 4 4 5 5 5 5
.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...
Partly cloudy. Slight chance of showers and thunderstorms. Lows
in the upper 50s. Highs in the mid 70s. Southeast winds 10-15 mph.
.THURSDAY...
Partly cloudy. Lows around 60. Highs in the upper 70s. Northeast
winds 10-15 mph.
.FRIDAY...
Partly cloudy. Lows in the lower 60s. Highs around 80. West-
northwest winds 10-15 mph.
$$
Forecaster...LaVoie
Requested by...Jace Skovgard
Type of request...WILDFIRE
.TAG 2620347.0/RIW
.DELDT 08/23/26
.FormatterVersion 2.0.0
.EMAIL wycpc@firenet.gov,jskovgard@blm.gov