815
WWUS73 KFSD 291055
NPWFSD
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
555 AM CDT MON JUN 29 2026
SDZ039-050-053-058-059-063-064-291200-
/O.CAN.KFSD.FG.Y.0009.000000T0000Z-260629T1200Z/
KINGSBURY-GREGORY-SANBORN-AURORA-DAVISON-CHARLES MIX-DOUGLAS-
INCLUDING THE CITIES OF DE SMET, STICKNEY, PLATTE, ARLINGTON, WHITE
LAKE, LAKE PRESTON, MARTY, BURKE, WAGNER, PLANKINTON, LAKE ANDES,
DELMONT, GREGORY, MITCHELL, CORSICA, WOONSOCKET, AND ARMOUR
555 AM CDT MON JUN 29 2026
..DENSE FOG ADVISORY IS CANCELED
FOG HAS LIFTED AND IS NO LONGER REDUCING VISIBILITY BELOW 1 MILE.
IAZ012>014-020>022-031-032-NEZ014-SDZ071-292100-
/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, BERESFORD, SHELDON, JEFFERSON, ROCK
VALLEY, SIOUX CITY, SPENCER, ALCESTER, HAWARDEN, IDA GROVE, BATTLE
CREEK, SOUTH SIOUX CITY, HOLSTEIN, SIOUX CENTER, ELK POINT, ORANGE
CITY, SANBORN, NORTH SIOUX CITY, CHEROKEE, HARTLEY, STORM LAKE, AND
HULL
555 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-SDZ062-066-067-069-070-292100-
/O.CON.KFSD.HT.Y.0002.000000T0000Z-260630T0200Z/
LYON-OSCEOLA-DICKINSON-DIXON-MINNEHAHA-TURNER-LINCOLN-YANKTON-CLAY-
INCLUDING THE CITIES OF CANTON, GEORGE, LENNOX, PONCA, INWOOD,
CENTERVILLE, MARION, CHANCELLOR, IRENE, SIOUX FALLS, SPIRIT LAKE,
WAKEFIELD, TEA, SIBLEY, ROCK RAPIDS, HARRISBURG, HURLEY, VIBORG,
ALLEN, VERMILLION, ARNOLDS PARK, PARKER, YANKTON, LARCHWOOD, AND
MILFORD
555 AM CDT MON JUN 29 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
* WHAT...HEAT INDEX VALUES 100 TO 105 EXPECTED.
* 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-SDZ040-056-292100-
/O.CON.KFSD.HT.Y.0002.260629T1800Z-260630T0200Z/
LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON-PIPESTONE-ROCK-
BROOKINGS-MOODY-
INCLUDING THE CITIES OF FLANDREAU, BROOKINGS, LUVERNE, LAKE BENTON,
WINDOM, IVANHOE, TYLER, MARSHALL, WORTHINGTON, LAKEFIELD, MOUNTAIN
LAKE, HENDRICKS, SLAYTON, PIPESTONE, JACKSON, AND FULDA
555 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.
SDZ038-052-057-291200-
/O.CON.KFSD.FG.Y.0009.000000T0000Z-260629T1200Z/
BEADLE-JERAULD-BRULE-
INCLUDING THE CITIES OF ALPENA, WESSINGTON SPRINGS, CHAMBERLAIN,
KIMBALL, AND HURON
555 AM CDT MON JUN 29 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 7 AM CDT THIS
MORNING...
* WHAT...VISIBILITY ONE QUARTER MILE OR LESS IN DENSE FOG AT TIMES.
* WHERE...JERAULD, BEADLE, AND BRULE COUNTIES.
* WHEN...UNTIL 7 AM CDT THIS MORNING.
* IMPACTS...LOW VISIBILITY COULD MAKE DRIVING CONDITIONS HAZARDOUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF DRIVING, SLOW DOWN, USE YOUR HEADLIGHTS, AND LEAVE PLENTY OF
DISTANCE AHEAD OF YOU.
JH
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