In 1889 – The Johnstown disaster occurred, the worst flood tragedy in U.S. history. Heavy rains collapsed the South Fork Dam sending a thirty foot wall of water rushing down the already flooded Conemaugh Valley. The wall of water, traveling as fast as twenty-two feet per second, swept away all structures, objects and people. 2100 were killed.
In 1941 – Thunderstorms hammered Burlington, Kansas, with 12.59 inches of rain to establish a 24 hour rainfall record for the state.
In 1990 – Afternoon and evening thunderstorms developing along a warm front produced severe weather from northwest Texas to southeastern Louisiana. The thunderstorms spawned sixteen tornadoes, including thirteen in northwest Texas. One tornado hit the town of Spearman in Texas causing more than a million dollars damage.
In 1951 – A massive hailstorm, from Wallace to Kearney County in Kansas, caused six million dollars damage to crops.
In 1953 – A large tornado killed two people on its 20 mile path from southwest of Fort Rice, North Dakota into Emmons County. Nearly every building in Fort Rice was damaged. The Catholic church was leveled, with some pews jammed four feet into the ground.
In 1988 – A powerful cold front brought snow and high winds to parts of the western U.S. Austin, Nevada, was blanketed with ten inches of snow.
In 1889 – Pair of powerful tornadoes struck Central Kansas. The first was an F3 with a track of 5 miles long. It leveled 2 farms between 8 and 5 miles southwest of McPherson. The second was a violent F4 tracking 25 miles. It was one quarter mile wide, as it tore through Marion and Chase counties. The second twister destroyed ten farms. On one of the farms, every building was swept away. The second twister killed 2 people and injured 4.
In 1947 – Heavy snow fell across Wisconsin, with ten inches reported at Gay Mills. The snow damaged fruit and other trees, and downed power lines.
In 1990 – Two to five inches of rain over southeastern Ohio on the 28th and 29th capped an exceptionally wet month of May, and triggered widespread flooding. Flooding which resulted claimed three lives, and caused millions of dollars damage. Numerous roads in southeast Ohio were flooded and impassable, and many other roads were blocked by landslides.