Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
148 FNUS75 KRIW 032142 FWSRIW Spot Forecast for Horse Fire...USFS National Weather Service Riverton WY 342 PM MDT Thu Jul 3 2025 Forecast is based on forecast start time of 0700 MDT on July 04. If conditions become unrepresentative, contact the National Weather Service .DISCUSSION... Shower and thunderstorm chances will increase around 1100 Friday and continue through 0100 Saturday. However, most likely chances to see rain and thunderstorms is between 1300 and 1600 Friday afternoon and again between 1800 and 2100 Friday evening. Gusty winds and locally heavy rainfall will be the main concerns with stronger storms Friday. Winds will generally prevail from the west southwest at 10 to 15 mph gusting as high as 30 mph during the afternoon. Locally stronger wind gusts will be possible with any thunderstorms. Temperatures Friday will be cooler and RHs will be wetter than Thursday, given the continued cloudiness and shower and thunderstorm activity. Looking ahead to Saturday, we return to a warming and drying trend, which will continue through the rest of the weekend and into the early part of next week. There are slight chances of showers and thunderstorms Saturday afternoon, but chances remain less than 20 percent. ...Thunderstorms imply strong gusty and erratic winds... .INDEPENDENCE DAY... Sky/weather.........Mostly sunny (45-55 percent). Scattered rain and thunderstorm chances after 1100, with most likely chances after 1300. CWR.................5 percent increasing to 50 percent in the afternoon. Chance of pcpn......70 percent. Chance of thunder...52 percent. Max temperature.....Around 65. Min humidity........44 percent. Wind (20 ft)........Light winds until 0800, then west 7 to 12 mph with gusts to around 21 mph. Gusty and erratic winds expected near thunderstorms. Ridgetop wind.......West 10 to 15 mph until 1400, then around 20 mph. Mixing height.......2000 ft AGL until 0900. 6000 ft AGL after 1300. Transport winds.....Southwest 12 to 21 mph until 1400, then west 22 to 26 mph. Smoke dispersal.....Poor until 0800. Very good after 1500. TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........45 40 35 40 45 50 55 60 60 55 50 Weather cov.....ISO ISO SCT SCT SCT SCT SCT NUM SCT SCT SCT Weather type....RW RW RW RW RW RW RW RW RW RW RW Tstm cov........ SCT SCT SCT SCT SCT SCT SCT SCT SCT CWR.............10 10 10 10 10 50 50 50 50 50 50 Chc of pcpn (%).20 20 30 30 30 50 40 70 50 40 50 Chc of thdr (%).10 10 30 30 30 50 40 50 50 40 50 Temp............47 50 55 57 61 62 65 63 62 65 63 RH..............83 79 70 65 58 55 50 51 50 44 45 20 FT wind dir..W SW SW SW W W W W W W W 20 FT wind spd..6 7 7 7 7 9 10 11 12 12 11 20 FT wind gust.8 12 11 13 14 16 18 19 20 20 21 Ridge wind dir..W SW SW SW W W W W W W W Ridge wind spd..10 15 15 15 15 15 15 20 20 20 20 Mix hgt (kft)...0.5 2.0 3.0 3.5 4.0 4.5 5.0 6.0 6.0 6.0 5.5 Transp wind dir.SW W W SW SW W SW W W W W Transp wind spd.12 14 14 14 14 16 21 22 25 26 25 SDspl kt-ft/10006 25 39 44 50 63 93 110 137 139 122 .FRIDAY NIGHT... Sky/weather.........Cloud cover decreasing through the night. Isolated rain and thunderstorms ending by 2200. CWR.................4 percent. Chance of pcpn......20 percent. Chance of thunder...18 percent. Min temperature.....Around 45. Max humidity........70 percent. Wind (20 ft)........West winds 7 to 11 mph with gusts to around 20 mph until 2200, then light. Gusty and erratic winds expected near thunderstorms early in the evening. Ridgetop wind.......West 15 to 20 mph until 2200, then around 10 mph until 0200, then south. Mixing height.......3500 ft AGL until 2000, then 500 ft AGL until 2400, then 500 ft AGL after 0100. Transport winds.....West 14 to 22 mph until 2200, then 10 to 12 mph until 2400, then south 9 to 10 mph. Smoke dispersal.....Good until 2000. Poor after 2100. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........40 45 55 30 20 20 20 20 20 20 20 15 Weather cov.....ISO ISO ISO ISO ISO ISO Weather type....RW RW RW RW RW RW Tstm cov........ISO ISO ISO CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).20 20 20 20 20 20 10 10 10 10 10 10 Chc of thdr (%).20 20 20 10 10 10 10 10 10 0 0 0 Temp............62 61 59 56 53 51 50 49 48 47 46 45 RH..............44 47 52 56 60 64 70 73 74 73 74 74 20 FT wind dir..W W W W W W W SW S S S S 20 FT wind spd..11 10 9 7 6 5 4 4 4 4 4 5 20 FT wind gust.20 18 14 13 11 8 7 6 7 7 7 7 Ridge wind dir..W W W W W W W SW S S S S Ridge wind spd..20 15 15 15 10 10 10 10 10 10 10 10 Mix hgt (kft)...5.0 3.5 1.5 0.5 0.5 0.5 0.1 0.5 0.5 0.5 0.5 0.5 Transp wind dir.W W W W W W SW SW S S S S Transp wind spd.22 22 16 14 12 10 9 9 9 9 9 10 SDspl kt-ft/100094 64 22 4 3 2 2 2 3 3 3 4 .SATURDAY... Sky/weather.........Sunny (10-20 percent). Slight chance of showers and thunderstorms in the late morning and afternoon. CWR.................0 percent. Chance of pcpn......20 percent. Chance of thunder...19 percent. Max temperature.....Around 67. Min humidity........33 percent. Wind (20 ft)........Light winds until 1000, then southwest 8 to 12 mph with gusts to around 21 mph until 1700, then west around 12 mph with gusts to around 21 mph. Gusty and erratic winds expected near thunderstorms. Ridgetop wind.......South 10 to 15 mph until 1100, then west 15 to 20 mph. Mixing height.......2000 ft AGL until 0900. 8000 ft AGL after 1300. Transport winds.....Southwest 10 to 16 mph until 1100, then 20 to 26 mph. Smoke dispersal.....Poor until 0800. Then very good increasing to excellent in the afternoon after 1300. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........15 10 10 10 15 15 20 20 20 20 20 15 Weather cov..... SCH SCH SCH SCH SCH SCH SCH SCH SCH Weather type.... RW RW RW RW RW RW RW RW RW Tstm cov........ SCH SCH SCH SCH SCH SCH SCH SCH SCH CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).10 10 10 10 10 10 20 20 20 20 20 20 Chc of thdr (%).10 10 10 10 10 10 20 20 20 20 20 20 Temp............46 49 53 57 60 61 63 65 66 67 67 66 RH..............72 67 61 55 50 46 42 38 34 32 31 32 20 FT wind dir..SE S S S SW SW SW W W W W W 20 FT wind spd..5 5 6 6 8 9 11 12 12 12 12 12 20 FT wind gust.8 10 10 12 14 17 18 20 21 21 21 21 Ridge wind dir..SE S S S SW SW SW W W W W W Ridge wind spd..10 10 10 15 15 15 20 20 20 20 20 20 Mix hgt (kft)...0.5 1.0 2.0 2.5 3.5 4.5 5.5 6.5 7.0 8.0 8.0 8.0 Transp wind dir.S S SW SW SW SW SW SW SW SW W W Transp wind spd.10 10 12 13 16 20 23 24 25 26 25 24 SDspl kt-ft/10004 10 18 28 50 78 112 133 155 179 171 163 .FORECAST DAYS 3 THROUGH 5... .SUNDAY... Mostly clear. Lows in the mid 40s. Highs in the lower 70s. Light winds. .MONDAY... Mostly clear. Lows in the upper 40s. Highs in the mid 70s. Light winds. .TUESDAY... Mostly clear. Lows around 50. Highs in the mid 70s. Light winds. $$ Forecaster...Hensley Requested by...Rebecca Hird Type of request...WILDFIRE .TAG 2516836.5/RIW .DELDT 07/03/25 .FormatterVersion 2.0.0 .EMAIL rhird@blm.gov,nws.riverton@noaa.gov