Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
935
FNUS75 KRIW 041218
FWSRIW
Spot Forecast for South Rim Piles...USDA/ Forest Service
National Weather Service Riverton WY
518 AM MST Wed Dec 4 2024
Forecast is based on ignition time of 0600 MST on December 04.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Mostly sunny with no precipitation expected today. Winds
generally light less than 10 mph out of the north to northwest,
giving way to poor smoke dispersal at the same time. Minimum
relative humidity values above the 40-50 percent range this
afternoon and high temperatures push into the low 40s before
dropping into the teens overnight. Similar conditions through the
end of the week before a pattern change this weekend.
...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...
.TODAY...
Sky/weather.........Sunny (10-20 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 42.
Min humidity........48 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Light winds until 1400, then north around 10
mph until 1600, then light.
Mixing height.......1000 ft AGL.
Transport winds.....Northwest 7 to 9 mph until 1600, then light
until 1700, then northwest around 7 mph.
Smoke dispersal.....Poor.
Haines Index........3.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........15 15 20 20 15 10 10 10 10 10 10 10
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............16 17 17 22 28 33 36 39 42 39 36 33
RH..............70 70 70 66 62 58 55 51 48 51 55 59
20 FT wind dir..SW SW S N NE NE N N N N SW SW
20 FT wind spd..2 1 1 0 1 2 2 2 3 3 1 2
20 FT wind gust. 5 5
Ridge wind dir..SW SW S S NE NE N N N N SW SW
Ridge wind spd..5 5 5 5 5 5 5 5 10 10 5 5
Mix hgt (kft)...1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Transp wind dir.NW NW NW NW NW NW NW NW NW NW NW NW
Transp wind spd.9 9 8 8 7 7 7 7 8 8 6 7
Haines index....3 3 3 3 3 3 3 3 3 3 3 3
SDspl kt-ft/10009 9 7 7 6 7 7 7 9 8 5 6
.TONIGHT...
Sky/weather.........Mostly clear (5-15 percent).
Chance of pcpn......0 percent.
Min temperature.....Around 15.
Max humidity........78 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Light winds.
Mixing height.......1000 ft AGL.
Transport winds.....Light winds until 1900, then northwest around 7
mph until 2000, then light until 2300, then
west around 7 mph.
Smoke dispersal.....Poor.
Haines Index........3.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........10 10 10 10 5 5 5 5 5 10 10 15
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............31 28 26 25 23 22 21 19 18 17 16 15
RH..............63 67 71 72 73 74 75 77 78 76 75 74
20 FT wind dir..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT wind spd..1 2 1 1 1 2 2 2 2 2 2 2
20 FT wind gust.
Ridge wind dir..SW SW SW SW SW SW SW SW SW SW SW SW
Ridge wind spd..5 5 5 5 5 5 5 5 5 5 5 5
Mix hgt (kft)...1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Transp wind dir.W NW NW W W W W W NW W W NW
Transp wind spd.6 7 6 6 6 7 7 7 7 7 7 7
Haines index....3 3 3 3 3 3 3 3 3 3 3 3
SDspl kt-ft/10005 7 6 6 6 7 7 7 7 7 7 7
.THURSDAY...
Sky/weather.........Sunny (5-15 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 40.
Min humidity........47 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Light winds until 1400, then northwest around
10 mph.
Mixing height.......1500 ft AGL.
Transport winds.....Northwest 7 to 8 mph until 0900, then light
until 1200, then northwest 7 to 8 mph.
Smoke dispersal.....Poor.
Haines Index........3.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........15 15 15 10 10 5 5 5 5 5 10 10
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............15 15 15 21 26 32 35 37 40 37 34 31
RH..............73 71 70 66 62 59 55 51 47 53 59 65
20 FT wind dir..SW SW SW W NW N N N N NW NW NW
20 FT wind spd..1 1 1 1 1 1 2 2 3 3 3 3
20 FT wind gust. 5 5 5 6
Ridge wind dir..SW SW SW W NW N N N N NW NW NW
Ridge wind spd..5 5 5 5 5 5 5 5 10 10 10 10
Mix hgt (kft)...1.0 1.0 1.0 1.0 1.0 1.0 1.5 1.5 1.5 1.5 1.0 1.0
Transp wind dir.W NW NW NW NW NW NW NW NW NW W W
Transp wind spd.8 8 7 6 6 6 7 7 8 8 8 8
Haines index....3 3 3 3 3 3 3 3 3 3 3 3
SDspl kt-ft/10008 8 5 5 5 6 8 9 12 10 9 7
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Mostly clear. Lows around 14. Highs in the lower 40s. Light
winds.
.SATURDAY...
Partly cloudy. Slight chance of snow showers. Lows around 11.
Highs in the lower 40s. Light winds.
.SUNDAY...
Colder. Snow showers likely. Lows around 17. Highs in the lower
30s. Light winds.
$$
Forecaster...Lowe
Requested by...Daniel Chappell
Type of request...PRESCRIBED
.TAG 2427682.0/RIW
.DELDT 12/04/24
.FormatterVersion 2.0.0
.EMAIL daniel.chappell@usda.gov