Thu May 2 15:33:10 EDT 2024 Box Butte/South Sioux/Niobrara River- 132 PM MDT Thu May 2 2024 .TONIGHT... Sky/weather.........Partly cloudy. Slight chance of showers after 2400 until 0500. Slight chance of snow showers after 0300 until 0400. Chance of showers after 0500. Min temperature.....33-38. 24 hr trend......4 degrees warmer. Max humidity........68-74 percent. 24 hr trend......11 percent drier. Humidity recovery...Good. 20-foot winds.......West around 10 mph and gusty shifting to the south after midnight. LAL.................1. Chc of wetting rain.5 percent. Transport winds.....West around 15 mph shifting to the south after midnight. Mixing height.......5300-7300 ft AGL decreasing to 200-900 ft AGL after midnight. Smoke dispersal.....Good (99800 knot-ft) decreasing to poor (6000 knot-ft) after midnight. Haines Index........3 or very low potential for large plume dominated fire growth. .FRIDAY... Sky/weather.........Partly cloudy until 1200, then mostly cloudy. Slight chance of showers until 1000Chance of showers after 1000. Max temperature.....52-60. 24 hr trend......1 degree cooler. Min humidity........43-49 percent. 24 hr trend......33 percent wetter. 20-foot winds.......Northeast around 10 mph shifting to the north in the afternoon. Gusts up to 30 mph. LAL.................1 until 1200, then 2 until 1500, then 3. Chc of wetting rain.20 percent. Transport winds.....Southwest around 10 mph increasing to north around 20 mph in the afternoon. Mixing height.......1400-3400 ft AGL increasing to 3400-5400 ft AGL in the afternoon. Smoke dispersal.....Poor to good (28000-63800 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .FRIDAY NIGHT... Sky/weather.........Partly cloudy until 0300, then clear. Chance of showers until 2400. Min temperature.....26-31. 24 hr trend......8 degrees cooler. Max humidity........90-96 percent. 24 hr trend......17 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North around 10 mph and gusty shifting to the south after midnight. LAL.................2 until 2100, then 1. Chc of wetting rain.5 percent. Transport winds.....Northwest around 10 mph shifting to the southwest after midnight. Mixing height.......2200-4200 ft AGL decreasing to 200-1500 ft AGL after midnight. Smoke dispersal.....Poor (3100-23300 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .SATURDAY... Sky/weather.........Sunny. Max temperature.....60-65. 24 hr trend......4 degrees warmer. Min humidity........27-33 percent. 24 hr trend......16 percent drier. 20-foot winds.......South 10 to 15 mph. Gusts up to 15 mph increasing to 25 mph in the afternoon. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....South around 10 mph increasing to around 20 mph in the afternoon. Mixing height.......2000-4000 ft AGL increasing to 6600-8400 ft AGL in the afternoon. Smoke dispersal.....Poor (25800 knot-ft) increasing to very good (123300 knot-ft) in the afternoon. Haines Index........3 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .SUNDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows in the lower 40s. Highs in the upper 60s. South winds around 15 mph. .MONDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the mid 40s. Highs in the lower 60s. South winds around 15 mph. .TUESDAY...Partly cloudy with slight chance of showers. Lows around 40. Highs in the lower 60s. Southwest winds around 15 mph. .WEDNESDAY...Partly cloudy with slight chance of showers. Lows in the upper 30s. Highs around 60. .THURSDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the mid 30s. Highs in the upper 50s.