229
WWUS73 KLSX 210123
NPWLSX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
823 PM CDT MON JUL 20 2026
ILZ095-097-098-MOZ018-019-026-027-034>036-042-052-210230-
/O.EXP.KLSX.HT.Y.0004.000000T0000Z-260721T0100Z/
ADAMS IL-PIKE IL-CALHOUN 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, PITTSFIELD, QUINCY, HANNIBAL,
AND MEXICO
823 PM CDT MON JUL 20 2026
..HEAT ADVISORY HAS EXPIRED
THE THREAT HAS ENDED.
ILZ069-074-079-100>102-MOZ041-047>051-059>065-072>075-084-085-099-
211630-
/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 UNION, SULLIVAN, ALTON, JEFFERSON CITY,
CAHOKIA, CHESTER, WASHINGTON, SAINT LOUIS, FARMINGTON, COLUMBIA,
BELLEVILLE, FULTON, SAINT CHARLES, EDWARDSVILLE, AND SPARTA
823 PM CDT MON JUL 20 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT TUESDAY
* WHAT...HEAT INDEX VALUES UP TO 109.
* 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.
PEINE
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