Spot Forecast
Issued by NWS Cheyenne, WY
Issued by NWS Cheyenne, WY
662 FNUS75 KCYS 191925 FWSCYS Spot Forecast for Schiff Fire...Alliance Fire Department National Weather Service Cheyenne WY 125 PM MDT Wed Jun 19 2024 If conditions become unrepresentative, contact the National Weather Service at (307) 772-2227 .DISCUSSION... Southeast winds will continue through the remainder of the afternoon. Gusts from these southeast winds up to 28-30 mph at times. Look for chance for showers and storms to increase through the late afternoon. Peak time frame for storms will be 2100 to 0300...but could begin as early as 1500. Low clouds and fog expected overnight as humidity continues to increase...so expect excellent overnight humidity recoveries. Fog and low clouds may persist through Thursday morning before breaking up and showers and storms redevelop Thursday afternoon. .REST OF TODAY... Sky/weather.........Mostly cloudy (65-75 percent). Slight chance of showers late in the afternoon. CWR.................4 percent. LAL.................1. Max temperature.....Around 67. Min humidity........43 percent. Wind (20 ft)........Southeast winds 20 to 22 mph with gusts to 30 mph. Mixing height.......4500 ft AGL. Transport winds.....Southeast 25 to 28 mph. Smoke dispersal.....Good (92100 knot-ft) early in the morning increasing to very good (103500 knot-ft) in the afternoon. Haines Index........2 or very low potential for large plume dominated fire growth. TIME (MDT) 2PM 3PM 4PM 5PM Sky (%).........63 70 74 78 Weather cov..... SCH SCH SCH Weather type.... RW RW RW Tstm cov........ CWR.............0 0 0 0 LAL.............1 1 1 1 Temp............66 66 66 64 RH..............47 47 48 54 20 FT wind dir..SE SE SE SE 20 FT wind spd..20 20 20 18 20 FT wind gust.30 31 31 30 Mix hgt (kft)...4.5 4.5 4.2 3.9 Transp wind dir.SE SE SE SE Transp wind spd.25 26 26 28 Haines index....2 2 2 2 SDspl kt-ft/1000100 104 99 92 .TONIGHT... Sky/weather.........Mostly cloudy (80-90 percent). Chance of showers and thunderstorms through the night. Patchy fog overnight. Areas of fog after 3 am. CWR.................26 percent decreasing to 8 percent overnight. LAL.................2 until 1900, then 3 until 0400, then 1. Min temperature.....Around 51. Max humidity........100 percent. Wind (20 ft)........Southeast winds 18 to 22 mph with gusts to 30 mph till 2000. Then decreasing to 14 to 16 mph with gusts to 23 mph through 0200. Then southeast to 10 mph. Gusty and erratic winds expected near thunderstorms. Mixing height.......1100 ft AGL. Transport winds.....Southeast 22 to 28 mph. Smoke dispersal.....Good (82800 knot-ft) early in the evening decreasing to poor (21600 knot-ft) late in the night. Haines Index........2 to 3 or very low potential for large plume dominated fire growth. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........82 83 83 84 85 86 88 88 89 90 89 87 Weather cov.....SCH CHC CHC CHC CHC CHC CHC CHC CHC CHC ARS ARS Weather type....RW RW RW RW RW RW RW RW RW RNF FOG FOG Tstm cov........SCH CHC CHC SCH SCH SCH CHC CHC CHC CHC SCH CWR.............30 30 30 30 30 30 10 10 10 10 10 10 LAL.............2 3 3 2 2 2 3 3 3 3 2 1 Temp............59 58 55 54 54 52 52 51 52 52 52 52 RH..............64 69 80 86 86 96 100 100 100 100 100 100 20 FT wind dir..SE SE SE SE SE SE SE SE SE SE SE SE 20 FT wind spd..22 20 17 16 15 15 15 15 14 14 13 10 20 FT wind gust.36 31 28 24 23 23 23 23 23 22 20 17 Mix hgt (kft)...3.5 3.0 2.5 2.1 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 Transp wind dir.SE SE SE SE SE SE SE SE S S S S Transp wind spd.28 26 24 24 24 25 26 25 25 24 23 22 Haines index....2 2 2 2 2 2 3 3 3 3 3 3 SDspl kt-ft/100083 68 53 42 38 37 36 33 30 27 24 22 .THURSDAY... Sky/weather.........Mostly cloudy (70-80 percent). Areas of fog early in the morning, then patchy fog early in the morning. Chance of rain showers in the afternoon. Chance of thunderstorms late in the afternoon. CWR.................2 percent increasing to 24 percent in the afternoon. LAL.................1 until 1500, then 3. Max temperature.....Around 79. Min humidity........56 percent. Wind (20 ft)........Southeast winds 9 to 14 mph. Gusty and erratic winds expected near thunderstorms late in the afternoon. Mixing height.......4200 ft AGL. Transport winds.....South 12 to 21 mph shifting to the east around 14 mph late in the afternoon. Smoke dispersal.....Poor (20800 knot-ft) early in the morning increasing to fair (51900 knot-ft) in the afternoon. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........86 88 89 91 85 79 73 68 62 56 63 70 Weather cov.....ARS PTY PTY CHC CHC CHC CHC CHC CHC Weather type....FOG FOG FOG RW RW RW RW RW RW Tstm cov........ CHC CHC CHC CWR.............0 0 0 0 0 0 20 20 20 20 20 20 LAL.............1 1 1 1 1 1 1 1 1 3 3 3 Temp............52 55 57 60 64 65 69 73 75 79 78 76 RH..............100 100 96 93 81 81 73 64 62 56 60 64 20 FT wind dir..SE SE SE SE SE SE SE SE SE SE SE E 20 FT wind spd..9 9 9 10 10 12 13 14 14 14 13 12 20 FT wind gust.15 15 15 16 17 18 21 22 22 22 21 18 Mix hgt (kft)...1.1 1.2 1.5 1.7 2.0 2.3 2.7 3.3 3.9 4.2 3.9 3.3 Transp wind dir.S S S S S S S S S SE SE E Transp wind spd.21 21 21 18 16 12 9 10 13 14 14 14 Haines index....4 4 4 4 4 4 3 3 3 3 3 3 SDspl kt-ft/100021 23 26 28 27 24 22 29 41 52 47 40 $$ Forecaster...Claycomb Requested by...Chief Troy Shoemaker Type of request...WILDFIRE .TAG 2416406.0/CYS .DELDT 06/19/24 .FormatterVersion 2.0.0 .EMAIL alorensen@cityofalliance.net