On This Day, March 28, In 1988, Severe Thunderstorms In Central Oklahoma Produced Hail Up To Four Inches In Diameter Causing 35 Million Dollars In Damage In Southern Oklahoma County. 1500 New Cars At A General Motors Plant Were Totaled. Several Large Aircraft Were Heavily Damaged At Tinker Air Force Base. Baseball Sized Hail And Seven Inches Of Rain Caused Another Eighteen Million Dollars Damage In Stephens County.