SVR STRM WRNG - E C CASS CNTY IN NORTH C IN MIAMI CNTY IN NORTH C IN UNTL 845P : AT 751P NWS 88D INDCTD A SVR STRM CAPBL OF PRDCNG NICKEL SIZE HAIL AND DMGG WINDS IN EXCESS OF 60. THIS SVR STRM WAS LOCATED 4 MI NE OF WALTON OR ABT 5 MI NW OF GRISSOM AFB AND MVNG NE AT 25.