779
FLUS43 KFSD 170950
HWOFSD
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
450 AM CDT THU SEP 17 2026
IAZ002-003-MNZ071-072-080-081-089-090-097-098-SDZ038>040-050-052>065-
181000-
OSCEOLA-DICKINSON-LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON-
PIPESTONE-ROCK-BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-
MINER-LAKE-MOODY-BRULE-AURORA-DAVISON-HANSON-MCCOOK-MINNEHAHA-
CHARLES MIX-DOUGLAS-HUTCHINSON-
450 AM CDT THU SEP 17 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST IOWA, SOUTHWEST
MINNESOTA, CENTRAL SOUTH DAKOTA, EAST CENTRAL SOUTH DAKOTA, SOUTH
CENTRAL SOUTH DAKOTA AND SOUTHEAST SOUTH DAKOTA.
DAY ONE
TODAY AND TONIGHT.
PATCHY DENSE FOG WILL CONTINUE THROUGH MID-MORNING. BE PREPARED FOR
RAPID CHANGES IN VISIBILITY DURING ON THE MORNING COMMUTES.
THUNDERSTORM RISKS RETURN LATE TONIGHT THROUGH FRIDAY MORNING. MAIN
RISK WILL BE HEAVY RAINFALL WITH ACCUMULATIONS BETWEEN 1-2 INCHES
EXPECTED ALONG AND NORTH OF I-90. LOCALLY HIGHER ACCUMULATIONS WILL
BE POSSIBLE.
DAYS TWO THROUGH SEVEN
FRIDAY THROUGH WEDNESDAY.
A CONDITIONAL CHANCE FOR STRONGER STORMS WILL BE POSSIBLE BY FRIDAY
AFTERNOON MAINLY ALONG THE U.S. HIGHWAY-20 CORRIDOR.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
IAZ001-012>014-020>022-031-032-NEZ013-014-SDZ066>071-181000-
LYON-SIOUX-O'BRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-WOODBURY-IDA-
DIXON-DAKOTA-TURNER-LINCOLN-BON HOMME-YANKTON-UNION-
450 AM CDT THU SEP 17 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST IOWA, WEST CENTRAL
IOWA, NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA.
DAY ONE
TODAY AND TONIGHT.
PATCHY DENSE FOG WILL CONTINUE THROUGH MID-MORNING. BE PREPARED FOR
RAPID CHANGES IN VISIBILITY DURING ON THE MORNING COMMUTES.
THUNDERSTORM RISKS RETURN LATE TONIGHT THROUGH FRIDAY MORNING. MAIN
RISK WILL BE HEAVY RAINFALL WITH ACCUMULATIONS BETWEEN 0.25 TO 0.75
OF AN INCH ALONG AND SOUTH OF U.S. HIGHWAY-18.
DAYS TWO THROUGH SEVEN
FRIDAY THROUGH WEDNESDAY.
A CONDITIONAL CHANCE FOR STRONGER STORMS WILL BE POSSIBLE BY FRIDAY
AFTERNOON MAINLY ALONG THE U.S. HIGHWAY-20 CORRIDOR.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
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