235 

WWUS73 KLSX 291902

NPWLSX



URGENT - WEATHER MESSAGE

National Weather Service St Louis MO

202 PM CDT Mon Jun 29 2026



ILZ069-074-079-100>102-MOZ060>065-075-301015-

/O.CON.KLSX.XH.W.0001.000000T0000Z-260704T0300Z/

Clinton IL-Washington IL-Randolph IL-Madison IL-Saint Clair IL-

Monroe IL-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-

Saint Louis City MO-Jefferson MO-Sainte Genevieve MO-

Including the cities of Sullivan, Edwardsville, Saint Charles,

Sparta, Chester, Cahokia, Alton, Saint Louis, Union, Washington, and

Belleville

202 PM CDT Mon Jun 29 2026



...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 10 PM CDT FRIDAY...



* WHAT...Dangerously hot conditions with heat index values up to 110.



* WHERE...Portions of south central and southwest Illinois and east

  central and southeast Missouri.



* WHEN...Until 10 PM CDT Friday.



* 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>036-041-042-

047>052-059-072>074-084-085-099-301015-

/O.CON.KLSX.HT.Y.0002.000000T0000Z-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-Boone MO-Audrain

MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO-Lincoln

MO-Gasconade MO-Crawford MO-Washington MO-Saint Francois MO-Iron

MO-Madison MO-Reynolds MO-

Including the cities of Salem, Farmington, Centralia, Quincy,

Litchfield, Columbia, Hannibal, Vandalia, Fulton, Pittsfield, Bowling

Green, Mexico, Jefferson City, and Mount Sterling

202 PM CDT Mon Jun 29 2026



...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT FRIDAY...



* WHAT...Heat index values up to 105.



* WHERE...Portions of south central, southwest, and west central

  Illinois and central, east central, northeast, and southeast

  Missouri.



* WHEN...Until 10 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.



&&



$$



Peine