321
WWUS73 KFSD 291238
NPWFSD
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
738 AM CDT MON JUN 29 2026
IAZ012>014-020>022-031-032-NEZ014-SDZ071-292300-
/O.CON.KFSD.XH.W.0001.000000T0000Z-260630T0200Z/
SIOUX-O'BRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-WOODBURY-IDA-
DAKOTA-UNION-
INCLUDING THE CITIES OF SIOUX CITY, JEFFERSON, ORANGE CITY, HULL,
SANBORN, STORM LAKE, BERESFORD, HOLSTEIN, ALCESTER, ELK POINT, IDA
GROVE, SOUTH SIOUX CITY, CHEROKEE, SIOUX CENTER, SHELDON, SPENCER, LE
MARS, HARTLEY, NORTH SIOUX CITY, HAWARDEN, BATTLE CREEK, AND ROCK
VALLEY
738 AM CDT MON JUN 29 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP TO 107.
* WHERE...PORTIONS OF NORTHWEST AND WEST CENTRAL IOWA, NORTHEAST
NEBRASKA, AND SOUTHEAST SOUTH DAKOTA.
* WHEN...UNTIL 9 PM CDT THIS EVENING.
* 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.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
TAKE EXTRA PRECAUTIONS WHEN OUTSIDE. WEAR LIGHTWEIGHT AND LOOSE
FITTING CLOTHING. TRY TO LIMIT STRENUOUS ACTIVITIES TO EARLY MORNING
OR EVENING. TAKE ACTION WHEN YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND
HEAT STROKE.
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.
SDZ039-054-055-060-061-065-068-292300-
/O.EXA.KFSD.HT.Y.0002.260629T1800Z-260630T0200Z/
KINGSBURY-MINER-LAKE-HANSON-MCCOOK-HUTCHINSON-BON HOMME-
INCLUDING THE CITIES OF BRIDGEWATER, LAKE PRESTON, FREEMAN, TYNDALL,
PARKSTON, CANISTOTA, CLAYTON, ARLINGTON, SCOTLAND, DE SMET, SALEM,
MONTROSE, MENNO, EMERY, ALEXANDRIA, HOWARD, AVON, TABOR, TRIPP,
SPRINGFIELD, MADISON, AND ORLAND
738 AM CDT MON JUN 29 2026
...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM CDT THIS
EVENING...
* WHAT...HEAT INDEX VALUES UP TO 103 EXPECTED.
* WHERE...PORTIONS OF EAST CENTRAL AND SOUTHEAST SOUTH DAKOTA.
* WHEN...FROM 1 PM THIS AFTERNOON TO 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.
IAZ001>003-NEZ013-SDZ062-066-067-069-070-292300-
/O.CON.KFSD.HT.Y.0002.000000T0000Z-260630T0200Z/
LYON-OSCEOLA-DICKINSON-DIXON-MINNEHAHA-TURNER-LINCOLN-YANKTON-CLAY-
INCLUDING THE CITIES OF PARKER, VERMILLION, ROCK RAPIDS, CENTERVILLE,
INWOOD, YANKTON, ARNOLDS PARK, SIOUX FALLS, TEA, ALLEN, PONCA,
SIBLEY, MILFORD, IRENE, LARCHWOOD, HARRISBURG, LENNOX, WAKEFIELD,
CANTON, SPIRIT LAKE, CHANCELLOR, VIBORG, HURLEY, GEORGE, AND MARION
738 AM CDT MON JUN 29 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES UP TO 104.
* WHERE...PORTIONS OF NORTHWEST IOWA, NORTHEAST NEBRASKA, 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.
MONITOR THE LATEST FORECASTS AND WARNINGS FOR UPDATES.
MNZ071-072-080-081-089-090-097-098-SDZ040-056-292300-
/O.CON.KFSD.HT.Y.0002.260629T1800Z-260630T0200Z/
LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON-PIPESTONE-ROCK-
BROOKINGS-MOODY-
INCLUDING THE CITIES OF JACKSON, BROOKINGS, HENDRICKS, SLAYTON,
WORTHINGTON, FLANDREAU, MOUNTAIN LAKE, IVANHOE, LAKE BENTON,
LAKEFIELD, PIPESTONE, MARSHALL, FULDA, LUVERNE, WINDOM, AND TYLER
738 AM CDT MON JUN 29 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM
CDT THIS EVENING...
* WHAT...HEAT INDEX VALUES UP TO 104 EXPECTED.
* WHERE...PORTIONS OF SOUTHWEST MINNESOTA AND EAST CENTRAL SOUTH
DAKOTA.
* WHEN...FROM 1 PM THIS AFTERNOON TO 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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