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WWUS63 KFSD 021019
WCNFSD

WATCH COUNTY NOTIFICATION FOR WATCH 640
NATIONAL WEATHER SERVICE SIOUX FALLS SD
519 AM CDT WED SEP 2 2026

IAC021-035-041-059-093-141-143-149-167-193-NEC043-051-SDC127-
021130-
/O.EXP.KFSD.SV.A.0640.000000T0000Z-260902T1000Z/

THE NATIONAL WEATHER SERVICE HAS ALLOWED SEVERE THUNDERSTORM
WATCH 640 TO EXPIRE FOR THE FOLLOWING AREAS

IN IOWA THIS ALLOWS TO EXPIRE 10 COUNTIES

IN NORTHWEST IOWA

BUENA VISTA           CHEROKEE              CLAY
DICKINSON             O`BRIEN               OSCEOLA
PLYMOUTH              SIOUX

IN WEST CENTRAL IOWA

IDA                   WOODBURY

IN NEBRASKA THIS ALLOWS TO EXPIRE 2 COUNTIES

IN NORTHEAST NEBRASKA

DAKOTA                DIXON

IN SOUTH DAKOTA THIS ALLOWS TO EXPIRE 1 COUNTY

IN SOUTHEAST SOUTH DAKOTA

UNION

THIS INCLUDES THE CITIES OF ALCESTER, ALLEN, ARNOLDS PARK,
BATTLE CREEK, BERESFORD, CHEROKEE, ELK POINT, HARTLEY, HAWARDEN,
HOLSTEIN, HULL, IDA GROVE, JEFFERSON, LE MARS, MILFORD,
NORTH SIOUX CITY, ORANGE CITY, PONCA, ROCK VALLEY, SANBORN,
SHELDON, SIBLEY, SIOUX CENTER, SIOUX CITY, SOUTH SIOUX CITY,
SPENCER, SPIRIT LAKE, STORM LAKE, AND WAKEFIELD.

$$