Natural disasters timeline By fnewlin Mar 10, 1888 Great Blizzard of 1888 May 31, 1889 Johnstown Flood Jun 16, 1972 Hurricane Agnes May 31, 1985 The Tornado Outbreak Jan 7, 1996 Blizzard of '96 Sep 25, 1998 Pymatuning earthquake Aug 20, 2011 Hurricane Irene Sep 5, 2011 Tropical Storm Lee Oct 22, 2012 Hurricane Sandy Apr 23, 2016 16-Mile Fire