Non-Precipitation Warnings / Watches / Advisories
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
159 WWUS73 KLSX 051729 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 1229 PM CDT Sat Sep 5 2026 MOZ041-047>050-059-072-099-060830- /O.NEW.KLSX.HT.Y.0009.260906T0100Z-260907T0000Z/ /O.CON.KLSX.XH.W.0004.000000T0000Z-260906T0100Z/ Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Gasconade MO- Crawford MO-Reynolds MO- Including the cities of Columbia, Jefferson City, and Fulton 1229 PM CDT Sat Sep 5 2026 ...HEAT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 7 PM CDT SUNDAY... ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 106. For the Heat Advisory, heat index values up to 101 expected. * WHERE...Boone MO, Callaway MO, Cole MO, Moniteau MO, Osage MO, Crawford MO, Gasconade MO, and Reynolds MO Counties. * WHEN...For the Extreme Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 8 PM this evening to 7 PM CDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ058>060-064-065-069-070-074-079-095>099-MOZ018-019-026-027- 034>036-042-051-052-060-062-073>075-084-085-060100- /O.CON.KLSX.XH.W.0004.000000T0000Z-260906T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL- Marion IL-Washington IL-Randolph IL-Adams IL-Brown IL-Pike IL- Calhoun IL-Jersey IL-Knox MO-Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO-Audrain MO-Montgomery MO-Lincoln MO-Warren MO- Franklin MO-Washington MO-Saint Francois MO-Sainte Genevieve MO- Iron MO-Madison MO- Including the cities of Mexico, Salem, Centralia, Quincy, Farmington, Pittsfield, Bowling Green, Sullivan, Washington, Union, Mount Sterling, Litchfield, Hannibal, Chester, Vandalia, and Sparta 1229 PM CDT Sat Sep 5 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 107. * WHERE...Portions of south central, southwest, and west central Illinois and central, east central, northeast, and southeast Missouri. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ILZ100>102-MOZ061-063>065-060100- /O.CON.KLSX.XH.W.0004.000000T0000Z-260906T0100Z/ Madison IL-Saint Clair IL-Monroe IL-Saint Charles MO-Saint Louis MO-Saint Louis City MO-Jefferson MO- Including the cities of Belleville, Saint Charles, Cahokia, Saint Louis, Edwardsville, and Alton 1229 PM CDT Sat Sep 5 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 109. * WHERE...In Illinois, Madison IL, Monroe IL, and Saint Clair IL Counties. In Missouri, Jefferson MO, Saint Charles MO, Saint Louis City MO, and Saint Louis MO Counties. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. && $$ Gosselin