694
WWUS73 KLSX 200710
NPWLSX

URGENT - WEATHER MESSAGE
National Weather Service St Louis MO
210 AM CDT Mon Jul 20 2026

ILZ097-098-202215-
/O.EXA.KLSX.HT.Y.0004.260720T1700Z-260721T0100Z/
Pike IL-Calhoun IL-
Including the cities of Pittsfield
210 AM CDT Mon Jul 20 2026

...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS
EVENING...

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

* WHERE...Calhoun IL and Pike IL Counties.

* WHEN...From noon today to 8 PM CDT this evening.

* 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.

&&

$$

ILZ069-074-079-100>102-MOZ041-047>051-059>065-072>075-084-085-099-
202215-
/O.CON.KLSX.HT.Y.0004.000000T0000Z-260722T0000Z/
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-Crawford MO-
Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-
Madison MO-Reynolds MO-
Including the cities of Farmington, Saint Louis, Alton, Columbia,
Chester, Belleville, Cahokia, Sparta, Jefferson City, Edwardsville,
Union, Sullivan, Washington, Saint Charles, and Fulton
210 AM CDT Mon Jul 20 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT TUESDAY...

* WHAT...Heat index values up to 108.

* WHERE...Portions of south central and southwest Illinois and
  central, east central, and southeast Missouri.

* WHEN...Until 7 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.

&&

$$

ILZ095-MOZ018-019-026-027-034>036-042-052-202215-
/O.CON.KLSX.HT.Y.0004.260720T1700Z-260721T0100Z/
Adams IL-Knox MO-Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-
Pike MO-Audrain MO-Lincoln MO-
Including the cities of Bowling Green, Quincy, Mexico, and Hannibal
210 AM CDT Mon Jul 20 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS
EVENING...

* WHAT...Heat index values up to 108 expected.

* WHERE...In Illinois, Adams IL County. In Missouri, Audrain MO,
  Lincoln MO, Knox MO, Lewis MO, Marion MO, Monroe MO, Pike MO, Ralls
  MO, and Shelby MO Counties.

* WHEN...From noon today to 8 PM CDT this evening.

* 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