


Hazardous Weather Outlook
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
573 FLUS43 KLSX 170833 HWOLSX Hazardous Weather Outlook National Weather Service St Louis MO 333 AM CDT Sun Aug 17 2025 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-180845- 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- 333 AM CDT Sun Aug 17 2025 This Hazardous Weather Outlook is for portions of eastern and central Missouri as well as west central and southwest Illinois. .DAY ONE...Today and tonight. Dangerous heat and humidity is expected this afternoon into this evening. Please see the heat advisory product for more details. There is a chance of thunderstorms for portions of the area this afternoon and evening. A few thunderstorms may produce gusty winds. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Dangerous heat and humidity is expected through at least Monday. Please see the heat advisory product for more details. There is a chance of thunderstorms for portions of the area Monday afternoon and evening. There are additional chances of thunderstorms late Monday night through Wednesday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. $$ Maples