SVR STRM WRNG - GRANT CNTY IN IN UNTL 715P : AT 645P NWS 88D INDCTD A SVR STRM CAPBL OF PRDCNG DESTRUCTIVE WINDS IN EXCESS OF 70. THIS SVR STRM WAS LOCATED 4 MI SW OF SWAYZEE OR ABT 7 MI E OF GREENTOWN AND MVNG NE AT 60.