158
WWUS73 KFSD 171531
NPWFSD
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1031 AM CDT FRI JUL 17 2026
IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-180200-
/O.CON.KFSD.HT.Y.0003.260717T1800Z-260718T0200Z/
LYON-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA
VISTA-WOODBURY-IDA-LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON-
PIPESTONE-ROCK-DIXON-DAKOTA-BEADLE-KINGSBURY-BROOKINGS-GREGORY-
JERAULD-SANBORN-MINER-LAKE-MOODY-BRULE-AURORA-DAVISON-HANSON-MCCOOK-
MINNEHAHA-CHARLES MIX-DOUGLAS-HUTCHINSON-TURNER-LINCOLN-BON HOMME-
YANKTON-CLAY-UNION-
INCLUDING THE CITIES OF SPIRIT LAKE, AVON, TYLER, ALEXANDRIA, WAGNER,
SPRINGFIELD, NORTH SIOUX CITY, LUVERNE, LAKE PRESTON, MOUNTAIN LAKE,
CENTERVILLE, ALLEN, HOLSTEIN, YANKTON, SHELDON, JEFFERSON, PLATTE,
CHEROKEE, HULL, PONCA, IDA GROVE, LAKE ANDES, ALCESTER, BURKE,
KIMBALL, MARSHALL, HURON, SALEM, CANTON, HURLEY, DE SMET, TEA, MENNO,
PIPESTONE, HARRISBURG, PARKSTON, BRIDGEWATER, SIOUX CITY, BATTLE
CREEK, PARKER, LE MARS, VIBORG, ALPENA, IRENE, FULDA, SPENCER,
CANISTOTA, CLAYTON, FREEMAN, HOWARD, CHAMBERLAIN, ARLINGTON, MARTY,
ORLAND, BROOKINGS, HARTLEY, SIOUX CENTER, IVANHOE, WOONSOCKET,
LAKEFIELD, ROCK VALLEY, GEORGE, MILFORD, MADISON, WHITE LAKE, SOUTH
SIOUX CITY, MARION, VERMILLION, STICKNEY, BERESFORD, SANBORN,
FLANDREAU, SLAYTON, TYNDALL, LARCHWOOD, JACKSON, SCOTLAND, ROCK
RAPIDS, ELK POINT, HENDRICKS, WINDOM, MITCHELL, STORM LAKE,
WAKEFIELD, ORANGE CITY, INWOOD, ARNOLDS PARK, EMERY, HAWARDEN, SIOUX
FALLS, WESSINGTON SPRINGS, WORTHINGTON, TRIPP, CHANCELLOR, TABOR,
DELMONT, GREGORY, ARMOUR, CORSICA, LENNOX, LAKE BENTON, SIBLEY,
PLANKINTON, AND MONTROSE
1031 AM CDT FRI JUL 17 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES OF 95 TO 102 ARE EXPECTED.
* WHERE...PORTIONS OF NORTHWEST AND WEST CENTRAL IOWA, SOUTHWEST
MINNESOTA, NORTHEAST NEBRASKA, AND CENTRAL, EAST CENTRAL, SOUTH
CENTRAL, AND SOUTHEAST SOUTH DAKOTA.
* WHEN...UNTIL 9 PM CDT THIS EVENING.
* 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.
WEISSER
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