Mon May 20 16:15:40 EDT 2024

Ferris/Seminoe/Shirley Mountains-
215 PM MDT Mon May 20 2024

.TONIGHT...
Sky/weather.........Cloudy. Showers and chance of thunderstorms 
                    until 2400, then chance of showers, snow 
                    showers and slight chance of thunderstorms. 
                    Little or no snow accumulation. 
Min temperature.....32-37. 
   24 hr trend......1 degree cooler. 
Max humidity........91-97 percent. 
   24 hr trend......11 percent wetter. 
Humidity recovery...Excellent. 
20-foot winds.......North around 5 mph shifting to the northwest 
                    after midnight. Gusts up to 25 mph. 
LAL.................3 until 2100, then 2. 
Chc of wetting rain.50 percent. 
Transport winds.....Northwest around 10 mph. 
Mixing height.......1700-3600 ft AGL. 
Smoke dispersal.....Poor (17600-20000 knot-ft). 
Haines Index........2 or very low potential for large plume 
                    dominated fire growth. 

.TUESDAY...
Sky/weather.........Mostly cloudy. Showers and snow showers likely. 
                    Chance of thunderstorms after 1200. Snow 
                    accumulation up to 1 inch. 
Max temperature.....41-47. 
   24 hr trend......2 degrees cooler. 
Min humidity........60-66 percent. 
   24 hr trend......4 percent drier. 
20-foot winds.......Northwest 10 to 15 mph with higher gusts. 
LAL.................1 until 1200, then 3. 
Chc of wetting rain.40 percent. 
Transport winds.....Northwest 15 to 20 mph. 
Mixing height.......3000-5000 ft AGL increasing to 6400-8400 ft AGL 
                    in the afternoon. 
Smoke dispersal.....Fair (43200 knot-ft) increasing to very good 
                    (127900 knot-ft) in the afternoon. 
Haines Index........3 or very low potential for large plume 
                    dominated fire growth. 

.TUESDAY NIGHT...
Sky/weather.........Mostly cloudy until 2100, then partly cloudy. 
                    Chance of thunderstorms until 2100. Chance of 
                    showers and snow showers until 2400. 
Min temperature.....30-35. 
   24 hr trend......3 degrees cooler. 
Max humidity........86-92 percent. 
   24 hr trend......4 percent drier. 
Humidity recovery...Excellent. 
20-foot winds.......Northwest around 10 mph and gusty shifting to 
                    the southwest after midnight. 
LAL.................3 until 2100, then 1. 
Chc of wetting rain.5 percent. 
Transport winds.....West around 15 mph. 
Mixing height.......4000-6000 ft AGL decreasing to 500-2200 ft AGL 
                    after midnight. 
Smoke dispersal.....Good (71000 knot-ft) decreasing to poor (13800 
                    knot-ft) after midnight. 
Haines Index........3 or very low potential for large plume 
                    dominated fire growth. 

.WEDNESDAY...
Sky/weather.........Mostly sunny until 0900, then partly cloudy 
                    until 1200, then mostly cloudy. 
Max temperature.....54-62. 
   24 hr trend......15 degrees warmer. 
Min humidity........20-26 percent. 
   24 hr trend......36 percent drier. 
20-foot winds.......Southwest 10 to 15 mph with gusts to around 35 
                    mph. 
LAL.................1. 
Chc of wetting rain.Zero percent. 
Transport winds.....Southwest 25 to 30 mph. 
Mixing height.......2300-4300 ft AGL increasing to 7400-9400 ft AGL 
                    in the afternoon. 
Smoke dispersal.....Good (65200 knot-ft) increasing to excellent 
                    (208800 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 snow showers and slight
chance of showers. Lows in the upper 30s. Highs in the mid 50s.
Southwest winds around 15 mph. 
.FRIDAY...Partly cloudy with chance of showers, snow showers and
slight chance of thunderstorms. Lows in the mid 30s. Highs in the
upper 50s. West winds around 15 mph. 
.SATURDAY...Partly cloudy with slight chance of showers. Lows in
the upper 30s. Highs in the mid 60s. Southwest winds around
10 mph. 
.SUNDAY...Partly cloudy. Chance of showers. Lows around 40. Highs
in the lower 60s. 
.MEMORIAL DAY...Mostly clear. Slight chance of showers. Lows in
the upper 30s. Highs in the mid 60s.