1925: During the late morning hours a severe hailstorm struck southeastern Iowa completely destroying crops along a path six to ten miles wide and 75 miles long. The hail also injured and killed poultry and livestock, and caused a total of 2.5 million dollars damage. The hailstorm flattened fields of corn to such an extent that many had to leave their farms in search of other work.
1931: The Yangtze River in China crests during a horrible flood that kills 3.7 million people directly and indirectly over the next several months. This flood was perhaps the worst natural disaster of the 20th century.
Source: History Channel.