FNUS73 KLSX 191021 FWSLSX Spot Forecast for Forbes West Rx...Illinois Department of Natural Resources National Weather Service Saint Louis MO 521 AM CDT Thu Mar 19 2026 Forecast is based on ignition time of 1000 CDT on March 19. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Skies will be mostly clear today, allowing for temperatures to quickly warm into the low 70s for afternoon highs. This warmth will allow for RH to drop to near 40% this afternoon among light southerly winds. Tonight, winds will be very light, possibly calm at times. Winds will become increasingly west-southwesterly Friday morning as temperatures again climb well above seasonal normals. Cloud cover will be slightly greater tomorrow than today, with mostly high clouds expected. .REST OF TODAY... Sky/weather.........Sunny (5-15 percent). CWR.................1 percent. Chance of thunder...1 percent. Temperature.........56 at ignition...Max 72. RH..................66 percent at ignition...Min 43 percent. Eye level winds.....Light winds. Adjustment factor of 0.3 used. Wind (20 ft)........Winds south at 3 mph at ignition...otherwise Light winds. Mixing height.......900 ft AGL at ignition...otherwise max 4400 ft AGL. Transport winds.....Southwest 3 to 7 mph. Smoke dispersal.....Poor /550 m/s-m/ at ignition. Max...poor /3760 m/s-m/. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM Sky (%).........17 9 6 6 9 4 4 8 11 18 11 21 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............56 61 65 68 70 71 72 71 70 65 63 60 RH..............66 56 50 47 44 44 43 44 47 56 60 64 20 FT wind dir..S S S S S S S S S S SE S 20 FT wind spd..3 3 4 4 3 3 3 3 2 2 2 2 20 FT wind gust.7 8 8 8 7 7 7 7 6 5 6 7 Eye lvl wnd dir.S S S S S S S S S S SE S Eye lvl wnd spd.1 1 2 2 1 1 1 1 1 1 1 1 Eye lvl wnd gst.3 4 4 4 3 3 3 3 3 2 3 3 Mix hgt (kft)...0.9 1.3 2.2 2.8 3.6 4.4 4.4 4.0 1.2 0.4 0.3 0.4 Transp wind dir.SW S S SW SW SW SW S S S S S Transp wind spd.5 3 5 5 5 5 6 7 7 7 9 10 Vrate kt-ft/1K..4 4 9 11 15 18 22 24 7 2 3 3 Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR .TONIGHT... Sky/weather.........Mostly clear (20-30 percent). CWR.................1 percent. Chance of thunder...2 percent. Temperature.........Min 50. RH..................Max 89 percent. Eye level winds.....Light winds. Adjustment factor of 0.3 used. Wind (20 ft)........South winds around 5 mph early in the evening becoming light, then becoming south around 5 mph after 3 am. Mixing height.......Min 300 ft AGL. Transport winds.....South 7 to 16 mph. Smoke dispersal.....Poor (380 m/s-m). .FRIDAY... Sky/weather.........Mostly sunny (30-40 percent). CWR.................1 percent. Chance of thunder...2 percent. Temperature.........Max 76. RH..................Min 46 percent. Eye level winds.....Light winds. Adjustment factor of 0.3 used. Wind (20 ft)........Southwest winds 5 to 8 mph. Mixing height.......Max 3600 ft AGL. Transport winds.....Southwest 14 to 16 mph shifting to the west 16 to 22 mph in the afternoon. Smoke dispersal.....Poor (860 m/s-m) early in the morningincreasing to good max (10890 m/s-m) in the afternoon. $$ Forecaster...Elmore Requested by...Wade Bloemer Type of request...PRESCRIBED .TAG 2606478.0/LSX .DELDT 03/19/26 .FormatterVersion 2.0.0