889 WWUS73 KLSX 172144 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 444 PM CDT Thu Sep 17 2026 ILZ058>060-065-098-099-MOZ041-050>052-181245- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/ Greene IL-Macoupin IL-Montgomery IL-Fayette IL-Calhoun IL-Jersey IL-Boone MO-Callaway MO-Montgomery MO-Lincoln MO- Including the cities of Fulton, Vandalia, Columbia, and Litchfield 444 PM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 103. * WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO, Callaway MO, Lincoln MO, and Montgomery MO Counties. * WHEN...Until 8 PM CDT Friday. * IMPACTS...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. && $$ ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085-099-181245- /O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/ Bond IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Madison IL- Saint Clair IL-Monroe IL-Moniteau MO-Cole MO-Osage 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- Including the cities of Salem, Alton, Saint Charles, Union, Sullivan, Washington, Saint Louis, Chester, Edwardsville, Belleville, Centralia, Cahokia, Jefferson City, Sparta, and Farmington 444 PM CDT Thu Sep 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Heat index values up to 106. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * IMPACTS...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. 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. && $$ Carney