558
WWUS73 KFSD 200156
NPWFSD
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
856 PM CDT SUN JUL 19 2026
SDZ050-063>065-068-069-201200-
/O.EXP.KFSD.HT.Y.0004.000000T0000Z-260720T0200Z/
/O.CON.KFSD.HT.Y.0005.260720T1700Z-260721T0100Z/
GREGORY-CHARLES MIX-DOUGLAS-HUTCHINSON-BON HOMME-YANKTON-
INCLUDING THE CITIES OF WAGNER, SPRINGFIELD, ARMOUR, AVON, CORSICA,
LAKE ANDES, SCOTLAND, MARTY, CLAYTON, TRIPP, BURKE, PARKSTON, MENNO,
FREEMAN, DELMONT, PLATTE, TABOR, GREGORY, YANKTON, AND TYNDALL
856 PM CDT SUN JUL 19 2026
..HEAT ADVISORY WILL EXPIRE AT 9 PM CDT THIS EVENING
..HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 8 PM CDT MONDAY
* WHAT...HEAT INDEX VALUES UP TO 103 EXPECTED ON MONDAY.
* WHERE...PORTIONS OF SOUTH CENTRAL AND SOUTHEAST SOUTH DAKOTA.
* WHEN...FROM NOON TO 8 PM CDT MONDAY.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
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.
SDZ038-052-053-057>060-200300-
/O.EXP.KFSD.HT.Y.0004.000000T0000Z-260720T0200Z/
BEADLE-JERAULD-SANBORN-BRULE-AURORA-DAVISON-HANSON-
INCLUDING THE CITIES OF PLANKINTON, WHITE LAKE, ALPENA, CHAMBERLAIN,
EMERY, WESSINGTON SPRINGS, MITCHELL, ALEXANDRIA, KIMBALL, HURON,
STICKNEY, AND WOONSOCKET
856 PM CDT SUN JUL 19 2026
..HEAT ADVISORY WILL EXPIRE AT 9 PM CDT THIS EVENING
TEMPERATURES HAVE BEGUN TO SLOWLY FALL. ALTHOUGH HUMIDITY LEVELS
REMAIN HIGH, THE THREAT OF DANGEROUS HEAT AND HUMIDITY HAS ENDED.
IAZ001>003-012>014-020>022-031-032-NEZ013-014-SDZ066-067-070-071-
201200-
/O.CON.KFSD.HT.Y.0005.260720T1700Z-260721T0100Z/
LYON-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA
VISTA-WOODBURY-IDA-DIXON-DAKOTA-TURNER-LINCOLN-CLAY-UNION-
INCLUDING THE CITIES OF ALCESTER, GEORGE, SHELDON, IDA GROVE, PARKER,
WAKEFIELD, LENNOX, SIOUX CENTER, SPENCER, LARCHWOOD, ROCK VALLEY,
CANTON, VIBORG, HULL, ALLEN, ELK POINT, CHEROKEE, SIOUX CITY, LE
MARS, BATTLE CREEK, CENTERVILLE, VERMILLION, ROCK RAPIDS, HOLSTEIN,
ORANGE CITY, JEFFERSON, ARNOLDS PARK, PONCA, SOUTH SIOUX CITY,
HURLEY, STORM LAKE, NORTH SIOUX CITY, HARRISBURG, TEA, SIBLEY,
HARTLEY, SPIRIT LAKE, MARION, HAWARDEN, CHANCELLOR, SANBORN,
BERESFORD, INWOOD, MILFORD, AND IRENE
856 PM CDT SUN JUL 19 2026
..HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 8 PM CDT MONDAY
* WHAT...HEAT INDEX VALUES UP TO 105 EXPECTED.
* WHERE...PORTIONS OF NORTHWEST AND WEST CENTRAL IOWA, NORTHEAST
NEBRASKA, AND SOUTHEAST SOUTH DAKOTA.
* WHEN...FROM NOON TO 8 PM CDT MONDAY.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT
ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
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.
JH
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