January 19, 1996: The Flood of 1996 caused major damage across much of Pennsylvania. The combination of unseasonably mild temperatures and heavy rain from a squall line caused the snow from the blizzard from one week before, quickly melt. A few of the locations that experienced major flooding included Altoona, Pittsburgh, Hollidaysburg, Harrisburg, Bedford, and Huntingdon. 17 Pennsylvanians lost their lives. Source.