FNUS75 KRIW 211501 FWSRIW Spot Forecast for Trail Creek Piles...USFS National Weather Service Riverton WY 801 AM MST Thu Nov 21 2024 Forecast is based on ignition time of 1000 MST on November 21. If conditions become unrepresentative, contact the National Weather Service .DISCUSSION... Skies remain partly to mostly cloudy, with a slight chance of very light mixed precipitation during the afternoon. Any accumulations will remain minimal. Winds will be light today, generally from the south under 5mph. Low mixing heights and light winds will lead to poor smoke dispersal. Friday will be similar to today, with light winds, low mixing and smoke dispersal. Skies will be clearer, with no precipitation expected. .REST OF TODAY... Sky/weather.........Partly sunny (60-70 percent). Slight chance of snow showers. CWR.................2 percent. Chance of pcpn......20 percent. LAL.................1. Max temperature.....Around 45. Min humidity........49 percent. Wind (20 ft)........Light winds. Ridgetop wind.......Southwest around 10 mph. Mixing height.......2500 ft AGL. Transport winds.....South 9 to 14 mph. Smoke dispersal.....Poor. Haines Index........2. TIME (MST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........55 70 65 70 65 60 65 65 Weather cov.....SCH SCH SCH SCH SCH SCH SCH SCH Weather type....SW SW RS RS RW RW RW SW Tstm cov........ CWR.............0 0 0 0 0 0 0 0 Chc of pcpn (%).20 20 20 20 20 20 20 20 LAL.............1 1 1 1 1 1 1 1 Temp............32 37 40 44 45 45 45 41 RH..............63 66 57 49 49 53 54 61 20 FT wind dir..SW S S S S SW SW SW 20 FT wind spd..3 3 3 4 5 5 4 4 20 FT wind gust. 6 7 7 6 6 Ridge wind dir..SW S S S S SW SW SW Ridge wind spd..10 10 10 10 10 10 10 10 Mix hgt (kft)...1.5 2.0 2.0 2.5 2.5 2.0 1.5 1.5 Transp wind dir.S S S S SW S SW S Transp wind spd.9 12 13 14 13 12 9 10 Haines index....2 2 2 2 2 2 2 2 SDspl kt-ft/100013 19 23 29 26 20 12 13 .TONIGHT... Sky/weather.........Mostly cloudy (60-70 percent). Slight chance of snow showers. CWR.................1 percent. Chance of pcpn......20 percent. LAL.................1. Min temperature.....Around 26. Max humidity........81 percent. Wind (20 ft)........Light winds. Ridgetop wind.......South around 10 mph until 0300, then light until 0500, then south around 10 mph. Mixing height.......1500 ft AGL. Transport winds.....South 7 to 12 mph. Smoke dispersal.....Poor. Haines Index........2 to 3. TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........65 70 70 70 70 70 70 65 65 65 65 60 Weather cov.....SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH Weather type....SW SW SW SW SW SW SW SW SW SW SW Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).20 20 20 20 20 20 20 20 20 20 20 10 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............39 37 37 36 35 34 32 32 31 30 30 30 RH..............67 68 68 73 75 75 76 76 81 79 79 75 20 FT wind dir..SW SW S S S S S S S S S S 20 FT wind spd..4 4 6 6 5 4 3 3 3 2 2 3 20 FT wind gust.6 6 8 8 7 6 Ridge wind dir..SW SW S S S S S S S S S S Ridge wind spd..10 10 10 10 10 10 10 10 10 5 5 10 Mix hgt (kft)...1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Transp wind dir.S S SW S S SW S S S S S S Transp wind spd.9 9 12 12 10 9 9 8 8 7 7 8 Haines index....2 2 2 2 2 3 3 3 3 3 3 3 SDspl kt-ft/100012 11 14 14 13 11 11 10 10 8 8 10 .FRIDAY... Sky/weather.........Mostly sunny (45-55 percent). CWR.................0 percent. Chance of pcpn......10 percent. LAL.................1. Max temperature.....Around 46. Min humidity........47 percent. Wind (20 ft)........Light winds. Ridgetop wind.......Southeast around 10 mph until 0900, then light until 1100, then south around 10 mph until 1700, then light. Mixing height.......2500 ft AGL. Transport winds.....South 8 to 12 mph. Smoke dispersal.....Poor. Haines Index........3. TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........60 55 50 45 45 40 45 50 55 55 55 55 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 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............27 26 27 31 35 38 42 45 46 45 41 38 RH..............79 77 79 74 71 69 62 54 48 47 50 53 20 FT wind dir..SE SE SE SE SE S S S S S S S 20 FT wind spd..3 3 3 2 2 3 3 4 5 4 3 2 20 FT wind gust. 6 7 6 Ridge wind dir..SE SE SE SE SE S S S S S S S Ridge wind spd..10 10 10 5 5 10 10 10 10 10 10 5 Mix hgt (kft)...1.5 1.5 1.5 1.5 1.5 2.0 2.0 2.5 2.5 2.0 1.5 1.5 Transp wind dir.S S S S S S S S S S S S Transp wind spd.8 8 8 8 9 10 10 12 12 10 9 8 Haines index....3 3 3 3 3 3 3 3 3 3 3 3 SDspl kt-ft/100010 10 10 10 14 18 19 23 24 19 14 9 .FORECAST DAYS 3 THROUGH 5... .SATURDAY... Snow showers. Lows in the mid 20s. Highs in the lower 40s. Light winds. .SUNDAY... Mostly cloudy with snow showers. Lows around 20. Highs in the mid 30s. Light winds. .MONDAY... Mostly cloudy. Chance of snow showers. Lows around 12. Highs in the mid 30s. Light winds. $$ Forecaster...Straub Requested by...Eli Berman Type of request...PRESCRIBED .TAG 2427154.0/RIW .DELDT 11/21/24 .FormatterVersion 2.0.0 .EMAIL eli.berman@usda.gov