851
FLUS43 KFSD 050928
HWOFSD
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
428 AM CDT SAT SEP 5 2026
IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-060930-
LYON-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-CLAY-PLYMOUTH-CHEROKEE-
BUENA VISTA-WOODBURY-IDA-LINCOLN-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-BON HOMME-YANKTON-
UNION-
428 AM CDT SAT SEP 5 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST IOWA, WEST CENTRAL
IOWA, SOUTHWEST MINNESOTA, NORTHEAST NEBRASKA, CENTRAL SOUTH
DAKOTA, EAST CENTRAL SOUTH DAKOTA, SOUTH CENTRAL SOUTH DAKOTA AND
SOUTHEAST SOUTH DAKOTA.
DAY ONE
TODAY AND TONIGHT.
THUNDERSTORMS CONTINUE THIS MORNING. SOME MAY BE STRONG TO SEVERE
PRODUCING HEAVY RAIN, WIND GUSTS TO 65 MPH, AND HAIL TO THE SIZE OF
A QUARTER.
SOME PATCHY FOG WILL REDUCE VISIBILITY THROUGH MID MORNING EAST OF
I-29.
HEAT AND HUMIDITY LEAD TO HEAT INDEX VALUES AROUND 100 DEGREES AGAIN
THIS AFTERNOON AND EVENING.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY.
HOT AND HUMID CONDITIONS ARE EXPECTED THROUGH THE HOLIDAY WEEKEND.
HEAT INDEX VALUES WILL BE IN THE 90S TO AROUND 100 DURING THE
AFTERNOON. PLEASE APPLY HEAT SAFETY TO YOUR OUTDOOR ACTIVITIES.
PERIODS OF ISOLATED TO SCATTERED THUNDERSTORMS REMAIN POSSIBLE
THROUGH THE HOLIDAY WEEKEND INTO THE WORK WEEK. A STRONGER STORM OR
TWO ARE POSSIBLE BUT WIDESPREAD SEVERE WEATHER IS NOT EXPECTED.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION MAY BE NEEDED AT TIMES INTO MONDAY.
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