442
WWUS73 KFSD 291148
NPWFSD
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
648 AM CDT MON JUN 29 2026
SDZ038-052-057-291300-
/O.EXP.KFSD.FG.Y.0009.000000T0000Z-260629T1200Z/
BEADLE-JERAULD-BRULE-
INCLUDING THE CITIES OF HURON, ALPENA, KIMBALL, WESSINGTON SPRINGS,
AND CHAMBERLAIN
648 AM CDT MON JUN 29 2026
..DENSE FOG ADVISORY WILL EXPIRE AT 7 AM CDT THIS MORNING
FOG HAS LIFTED AND IS NO LONGER REDUCING VISIBILITY BELOW 1 MILE.
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 LE MARS, IDA GROVE, HAWARDEN, NORTH SIOUX
CITY, HARTLEY, JEFFERSON, HOLSTEIN, HULL, BERESFORD, CHEROKEE, BATTLE
CREEK, SOUTH SIOUX CITY, ROCK VALLEY, STORM LAKE, SANBORN, SIOUX
CENTER, ELK POINT, SHELDON, ALCESTER, ORANGE CITY, SIOUX CITY, AND
SPENCER
648 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 108.
* 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.
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 VIBORG, HURLEY, CANTON, MILFORD, WAKEFIELD,
INWOOD, ROCK RAPIDS, SIOUX FALLS, HARRISBURG, TEA, IRENE, MARION,
PONCA, CHANCELLOR, LARCHWOOD, GEORGE, YANKTON, ALLEN, LENNOX, SPIRIT
LAKE, VERMILLION, PARKER, SIBLEY, ARNOLDS PARK, AND CENTERVILLE
648 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 FLANDREAU, IVANHOE, TYLER, BROOKINGS,
JACKSON, MARSHALL, HENDRICKS, FULDA, WINDOM, LAKEFIELD, LUVERNE,
SLAYTON, PIPESTONE, WORTHINGTON, LAKE BENTON, AND MOUNTAIN LAKE
648 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.
DUX
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page