


Spot Forecast
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
362 FNUS73 KLSX 101326 FWSLSX Spot Forecast for Wilson RX...Missouri Department of Conservation National Weather Service Saint Louis MO 826 AM CDT Wed Sep 10 2025 Forecast is based on ignition time of 1000 CDT on September 10. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Scattered to broken midlevel clouds will be around today, though largely in the morning. Winds will be light/variable through the period. Mixing heights will increase fairly rapidly this morning, rising above 4000 feet AGL around noon and peaking above 6000 feet this afternoon. While mixing will be deep, the very light winds throughout the mixed layer limit ventilation rates mostly to poor though peaking at fair this afternoon. .REST OF TODAY... Sky/weather.........Mostly cloudy (70-80 percent) then becoming mostly sunny (40-50 percent). CWR.................0 percent. Chance of thunder...2 percent. Temperature.........72 at ignition...Max 86. RH..................57 percent at ignition...Min 36 percent. Eye level winds.....Very light and variable using an adjustment factor of 0.4. Wind (20 ft)........Winds southwest at 2 mph at ignition...otherwise Light winds. Mixing height.......900 ft AGL at ignition...otherwise max 6100 ft AGL. Transport winds.....West 6 to 8 mph. Smoke dispersal.....Poor /710 m/s-m/ at ignition. Max...fair /6610 m/s-m/. TIME (CDT) 10 AM NOON 2 PM 4 PM 6 PM 8 PM Sky (%).........91 58 42 42 45 49 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 Temp............72 81 85 86 84 75 RH..............57 41 37 37 41 58 20 ft wind......SW 2 SW 3 SW 3 SW 3 W 2 E 2 20 ft wind gust.7 7 8 8 6 4 Eye level wind..SW 1 SW 1 SW 1 SW 1 W 1 E 1 Eye lvl wnd gst.3 3 4 4 3 2 Mix hgt (kft)...0.9 4.1 5.8 6.1 4.0 0.3 Transport wind..SW 6 W 6 W 7 W 7 W 6 N 7 Vrate kt-ft/1K..5 21 35 37 20 2 Ventrate Cat....POOR POOR POOR POOR POOR POOR .TONIGHT... Sky/weather.........Partly cloudy (35-45 percent). CWR.................0 percent. Chance of thunder...4 percent. Temperature.........Min 61. RH..................Max 90 percent. Eye level winds.....Very light and variable using an adjustment factor of 0.4. Wind (20 ft)........Light winds. Mixing height.......Min 300 ft AGL. Transport winds.....Northwest 5 to 6 mph shifting to the northeast 5 to 7 mph in the late evening and overnight. Smoke dispersal.....Poor (200 m/s-m). $$ Forecaster...Gosselin Requested by...Ben Peterson Type of request...PRESCRIBED .TAG 2521710.0/LSX .DELDT 09/10/25 .FormatterVersion 2.0.0