739 FNUS73 KLSX 061545 FWSLSX Spot Forecast for spring bend...St. Charles County Parks and Recreation National Weather Service Saint Louis MO 945 AM CST Wed Mar 6 2024 Forecast is based on ignition time of 1200 CST on March 06. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Winds turn from northeast to easterly through the day today with temperatures recovering slightly from yesterday's cool down. We continue to watch some low clouds that will try and advect in from the east. Latest indications are that cloud cover likely will stay FEW-SCT in St. Charles county. However, if they are more prevalent/thicker than forecast, temperatures may be a bit cooler, relative humidity values a bit higher, and mixing heights slightly less than forecast. Several rounds of showers along with a few thunderstorms are expected late Thursday through early Saturday. This is likely to bring significant (>1") rainfall to the entire region. .REST OF TODAY... Sky/weather.........Partly sunny (45-55 percent) then becoming sunny (20-30 percent). Chance of pcpn......0 percent. LAL.................No Tstms. Temperature.........54 at ignition...Max 60. RH..................61 percent at ignition...Min 51 percent. Wind (20 ft)........Winds north at 8 mph at ignition...otherwise Northeast winds 7 to 8 mph. Eye level winds.....Winds north around 3 mph veering more to the northeast this afternoon using an adjustment factor of 0.4. Haines Index........4 or low potential for large plume dominated fire growth at ignition...max 5. Mixing height.......2500 ft AGL at ignition...otherwise max 3000 ft AGL. Transport winds.....Northeast 9 to 12 mph. Smoke dispersal.....Poor /3960 m/s-m/ at ignition. Max...poor /3960 m/s-m/. TIME (CST) NOON 2 PM 4 PM 6 PM 8 PM 10 PM Sky (%).........68 35 25 39 35 38 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 0 0 LAL.............1 1 1 1 1 1 Temp............54 59 60 55 52 46 RH..............61 53 51 64 74 93 20 ft wind......N 8 NE 7 NE 7 NE 6 NE 5 E 4 20 ft wind gust.12 11 10 9 9 8 Eye level wind..N 4 NE 3 NE 3 NE 3 NE 2 E 2 Eye lvl wnd gst.6 5 5 4 4 4 Mix hgt (kft)...2.5 2.7 2.8 1.3 0.9 0.8 Transport wind..NE 12 NE 9 NE 9 NE 10 NE 10 E 8 Haines index....4 5 5 5 4 4 Vrate kt-ft/1K..25 21 22 12 8 6 Ventrate Cat....POOR POOR POOR POOR POOR POOR $$ Forecaster...Gosselin Requested by...Chuck Collins Type of request...PRESCRIBED .TAG 2405750.0/LSX .DELDT 03/06/24 .FormatterVersion 2.0.0