699 WWUS73 KLSX 021650 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 1150 AM CDT Thu Jul 2 2026 ILZ069-074-079-100>102-MOZ041-047>051-059>065-075-030800- /O.EXT.KLSX.XH.W.0001.000000T0000Z-260705T0100Z/ Clinton IL-Washington IL-Randolph IL-Madison IL-Saint Clair IL- Monroe IL-Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO- Montgomery MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO- Saint Louis MO-Saint Louis City MO-Jefferson MO-Sainte Genevieve MO- Including the cities of Fulton, Sparta, Saint Louis, Columbia, Cahokia, Saint Charles, Alton, Sullivan, Belleville, Edwardsville, Washington, Jefferson City, Chester, and Union 1150 AM CDT Thu Jul 2 2026 ...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Dangerously hot conditions with heat index values up to 108. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Saturday. * 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. && $$ ILZ058>060-064-065-070-095>099-MOZ018-019-026-027-034>036-042-052-072>074-084-085-099-030800- /O.NEW.KLSX.HT.Y.0003.260704T0300Z-260705T0100Z/ /O.CON.KLSX.XH.W.0001.000000T0000Z-260704T0300Z/ Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Marion 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-Lincoln MO-Crawford MO-Washington MO-Saint Francois MO-Iron MO-Madison MO- Reynolds MO- Including the cities of Salem, Mexico, Bowling Green, Litchfield, Centralia, Mount Sterling, Pittsfield, Quincy, Hannibal, Vandalia, and Farmington 1150 AM CDT Thu Jul 2 2026 ...HEAT ADVISORY IN EFFECT FROM 10 PM FRIDAY TO 8 PM CDT SATURDAY... ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 10 PM CDT FRIDAY... * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 105. For the Heat Advisory, heat index values up to 102 expected. * WHERE...Portions of south central, southwest, and west central Illinois and central, east central, northeast, and southeast Missouri. * WHEN...For the Extreme Heat Warning, until 10 PM CDT Friday. For the Heat Advisory, from 10 PM Friday to 8 PM CDT Saturday. * 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. && $$ Pfahler