WWUS73 KLSX 190112

NPWLSX



URGENT - WEATHER MESSAGE

National Weather Service St Louis MO

812 PM CDT Mon Aug 18 2025



ILZ058>060-095>099-MOZ018-019-026-027-034>036-041-042-050>052-190215-

/O.EXP.KLSX.HT.Y.0003.000000T0000Z-250819T0100Z/

Greene IL-Macoupin IL-Montgomery 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-Callaway MO-Montgomery MO-

Lincoln MO-

Including the cities of Columbia, Hannibal, Fulton, Quincy,

Mexico, Mount Sterling, Pittsfield, Litchfield, and Bowling Green

812 PM CDT Mon Aug 18 2025



...HEAT ADVISORY HAS EXPIRED...



Dangerous heat has ended across the area this evening and confidence 

is low that there will be another day of dangerous heat on Tuesday.



$$



ILZ064-065-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-

085-099-191615-

/O.CON.KLSX.HT.Y.0003.000000T0000Z-250820T0100Z/

Bond IL-Fayette 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 Sullivan, Washington, Farmington,

Centralia, Chester, Alton, Saint Charles, Union, Sparta,

Vandalia, Belleville, Salem, Jefferson City, Saint Louis,

Edwardsville, and Cahokia

812 PM CDT Mon Aug 18 2025



...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT TUESDAY...



* WHAT...Heat index values up to 104.



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

  central, east central, and southeast Missouri.



* WHEN...Until 8 PM CDT Tuesday.



* 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.



&&



$$



Pfahler