960
WWUS73 KLSX 181900
NPWLSX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
200 PM CDT FRI SEP 18 2026
ILZ058>060-065-098-099-MOZ041-050>052-190100-
/O.CON.KLSX.HT.Y.0012.000000T0000Z-260919T0100Z/
GREENE IL-MACOUPIN IL-MONTGOMERY IL-FAYETTE IL-CALHOUN IL-JERSEY
IL-BOONE MO-CALLAWAY MO-MONTGOMERY MO-LINCOLN MO-
INCLUDING THE CITIES OF FULTON, VANDALIA, LITCHFIELD, AND COLUMBIA
200 PM CDT FRI SEP 18 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES UP TO 105.
* WHERE...IN ILLINOIS, FAYETTE IL, MONTGOMERY IL, CALHOUN IL, GREENE
IL, JERSEY IL, AND MACOUPIN IL COUNTIES. IN MISSOURI, BOONE MO,
CALLAWAY MO, LINCOLN MO, AND MONTGOMERY MO COUNTIES.
* WHEN...UNTIL 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.
ILZ064-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084-085-
099-191000-
/O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/
BOND 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 SAINT CHARLES, FARMINGTON, JEFFERSON CITY,
ALTON, SPARTA, SAINT LOUIS, CAHOKIA, WASHINGTON, CHESTER, BELLEVILLE,
EDWARDSVILLE, UNION, SULLIVAN, SALEM, AND CENTRALIA
200 PM CDT FRI SEP 18 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY
* WHAT...HEAT INDEX VALUES UP TO 105.
* WHERE...PORTIONS OF SOUTH CENTRAL AND SOUTHWEST ILLINOIS AND
CENTRAL, EAST CENTRAL, AND SOUTHEAST MISSOURI.
* WHEN...UNTIL 8 PM CDT SATURDAY.
* 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.
19
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