On this date in 1936, much of the Eastern US was underwater. My grandfather was evacuated from a meeting in downtown Pittsburgh by boat.
20 Mar 1936 – ALL EASTERN AMERICA UNDER FLOOD WATERS
19 Mar 1936, Page 1 – The Plain Speaker at Newspapers.com
This came after a record cold February, and before the hottest summer in US history.
The Bulletin – Google News Archive Search
April of 1936 also brought one of the worst tornado outbreaks in US history.