Mon May 20 16:15:40 EDT 2024 North Laramie Valley/Shirley Basin- 215 PM MDT Mon May 20 2024 .TONIGHT... Sky/weather.........Cloudy. Showers and chance of thunderstorms until 2400, then showers likely and slight chance of thunderstorms. Min temperature.....33-38. 24 hr trend......2 degrees cooler. Max humidity........93-99 percent. 24 hr trend......14 percent wetter. Humidity recovery...Excellent. 20-foot winds.......Northeast 5 to 10 mph. Gusts up to 30 mph decreasing to 15 mph after midnight. LAL.................3 until 0300, then 2. Chc of wetting rain.60 percent. Transport winds.....Northeast around 10 mph shifting to the northwest after midnight. Mixing height.......1800-2900 ft AGL. Smoke dispersal.....Poor (16200-24600 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .TUESDAY... Sky/weather.........Mostly cloudy until 1200, then partly cloudy. Chance of showers until 1200. Snow showers likely. Showers likely and slight chance of thunderstorms after 1200. No snow accumulation. Max temperature.....43-48. 24 hr trend......1 degree cooler. Min humidity........55-61 percent. 24 hr trend......6 percent drier. 20-foot winds.......Northwest around 15 mph with higher gusts. LAL.................1 until 1200, then 2 until 1500, then 3. Chc of wetting rain.35 percent. Transport winds.....Northwest 15 to 20 mph. Mixing height.......2500-4500 ft AGL increasing to 6100-8100 ft AGL in the afternoon. Smoke dispersal.....Fair (46200 knot-ft) increasing to very good (147300 knot-ft) in the afternoon. Haines Index........3 or very low potential for large plume dominated fire growth. .TUESDAY NIGHT... Sky/weather.........Partly cloudy. Chance of showers, thunderstorms and snow showers until 2400, then slight chance of showers and snow showers. Min temperature.....28-33. 24 hr trend......4 degrees cooler. Max humidity........90-96 percent. 24 hr trend......4 percent drier. Humidity recovery...Excellent. 20-foot winds.......West 5 to 10 mph. Gusts up to 30 mph decreasing to 20 mph after midnight. LAL.................3 until 2100, then 1. Chc of wetting rain.10 percent. Transport winds.....West 15 to 20 mph. Mixing height.......4100-6100 ft AGL decreasing to 500-1700 ft AGL after midnight. Smoke dispersal.....Good (89600 knot-ft) decreasing to poor (13100 knot-ft) after midnight. Haines Index........3 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly sunny until 1200, then partly cloudy until 1500, then mostly cloudy. Slight chance of showers after 1200. Max temperature.....55-60. 24 hr trend......10 degrees warmer. Min humidity........22-28 percent. 24 hr trend......26 percent drier. 20-foot winds.......West 10 to 15 mph with higher gusts. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 25 mph. Mixing height.......2200-4200 ft AGL increasing to 7200-9200 ft AGL in the afternoon. Smoke dispersal.....Good (66600 knot-ft) increasing to excellent (178800 knot-ft) in the afternoon. Haines Index........4 or low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Partly cloudy with chance of showers. Lows in the mid 30s. Highs in the upper 50s. Southwest winds around 10 mph. .FRIDAY...Partly cloudy with chance of showers, snow showers and slight chance of thunderstorms. Lows in the lower 30s. Highs in the mid 50s. West winds around 15 mph. .SATURDAY...Partly cloudy with chance of showers. Areas of frost after midnight. Lows in the mid 30s. Highs in the mid 60s. Southwest winds around 10 mph. .SUNDAY...Partly cloudy with chance of showers. Lows in the upper 30s. Highs around 60. .MEMORIAL DAY...Mostly clear. Slight chance of showers. Lows in the upper 30s. Highs in the mid 60s.