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
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