FLUS43 KLSX 042055 HWOLSX Hazardous Weather Outlook National Weather Service St Louis MO 355 PM CDT Mon May 4 2026 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-052100- Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL- Marion IL-Washington IL-Randolph IL-Adams IL-Brown IL-Pike IL- Calhoun IL-Jersey IL-Madison IL-Saint Clair IL-Monroe IL-Knox MO- Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO-Boone MO- Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO- Lincoln MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO- Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO- Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO- Madison MO-Reynolds MO- 355 PM CDT Mon May 4 2026 This Hazardous Weather Outlook is for portions of eastern and central Missouri as well as west central and southwest Illinois. .DAYS ONE THROUGH SEVEN...This afternoon through Sunday. More detailed information can be accessed at: https://www.weather.gov/media/lsx/DssPacket.pdf The Area Forecast Discussion is available at: https://forecast.weather.gov/ product.php?issuedby=LSX&product=AFD&site=lsx .KEY MESSAGES... - Showers and thunderstorms are expected tonight. Some storms may be severe with 1 to 1 1/2 inch hail this evening, primarily a. long and north of I-70. There may also be damaging winds, however this is not as likely as large hail. - Periods of rain will continue on Tuesday as a cold front moves through the area. - Temperatures will be below normal Tuesday through Thursday, but will warm back up for Friday into the weekend. NOTE: Starting May 29, 2026, this outlook product will be discontinued. Please see the above products for more detailed forecast information. $$ WFO LSX