FNUS73 KLSX 200906 FWSLSX Spot Forecast for Baker Tract Unit...Missouri State Parks National Weather Service Saint Louis MO 406 AM CDT Fri Mar 20 2026 Forecast is based on ignition time of 0600 CDT on March 20. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Well-above average temperatures will continue today along with seasonably low RH and no precipitation. An inversion will break around 10 to 11 am with RH quickly falling below 50 percent and mixing heights rising above 1000 ft AGL. Conditions will improve through early afternoon with light westerly winds and minimum RH as low as 20 to 25 percent along with mixing heights of 6000 to 7000 ft AGL, favoring good smoke dispersion. The probability of RH falling below 30 percent is around 70 percent this afternoon. As temperatures cool through sunset, RH will rise again this evening along with mixing heights collapsing with the development of another inversion. .TODAY... Sky/weather.........Sunny (0-10 percent). CWR.................0 percent. Chance of thunder...1 percent. Temperature.........53 at ignition...Max 87. RH..................83 percent at ignition...Min 23 percent. Eye level winds.....Winds southwest at 1 mph early this morning becoming west 2 mph late this morning. A 0.3 adjustment factor is used. Wind (20 ft)........Winds southwest at 2 mph early this morning becoming west 5 to 6 mph late this morning. Mixing height.......500 ft AGL at ignition...otherwise max 6600 ft AGL. Transport winds.....West 10 to 15 mph. Smoke dispersal.....Poor /710 m/s-m/ at ignition. Max...good /12460 m/s-m/. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........12 5 3 1 3 9 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............53 55 66 78 85 87 RH..............83 72 65 47 29 23 20 ft wind......SW 2 SW 3 W 4 W 5 W 6 W 6 20 ft wind gust.7 8 10 12 12 13 Eye level wind..SW 1 SW 1 W 2 W 2 W 3 W 3 Eye lvl wnd gst.3 4 5 6 6 6 Mix hgt (kft)...0.5 0.5 1.0 2.0 4.5 6.6 Transport wind..W 10 W 13 W 13 W 10 W 12 W 14 Vrate kt-ft/1K..5 6 11 18 45 79 Ventrate Cat....POOR POOR POOR POOR FAIR GOOD .TONIGHT... Sky/weather.........Mostly clear (10-20 percent). CWR.................1 percent. Chance of thunder...3 percent. Temperature.........Min 53. RH..................Max 89 percent. Eye level winds.....Light winds. Wind (20 ft)........Light winds. Mixing height.......Min 500 ft AGL. Transport winds.....West 6 to 9 mph shifting to the north 6 to 8 mph overnight, then shifting to the northeast around 7 mph after 3 am shifting to the west around 8 mph early in the morning. Smoke dispersal.....Poor (410 m/s-m). .SATURDAY... Sky/weather.........Sunny (0-10 percent). CWR.................1 percent. Chance of thunder...3 percent. Temperature.........Max 88. RH..................Min 26 percent. Eye level winds.....Light winds. Wind (20 ft)........Light winds. Mixing height.......Max 5100 ft AGL. Transport winds.....Northwest 5 to 8 mph increasing to around 8 mph late in the afternoon, then shifting to the west around 7 mph late in the afternoon. Smoke dispersal.....Poor (350 m/s-m) early in the morning increasing to marginal max (5620 m/s-m) in the afternoon. $$ Forecaster...Pfahler Requested by...Harlee Scherrer Type of request...PRESCRIBED .TAG 2606687.0/LSX .DELDT 03/20/26 .FormatterVersion 2.0.0