• What is a blue moon?

    May 22, 2016; 8:35 AM ET

    While the phrase ’once in a Blue Moon’ is well-known, many may not realize the true definition of an astronomical Blue Moon.

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This Day In Weather History

New York City (1861)
Snow was reported.

Midwest (1896)
Tornado swarm in Iowa, Illinois and Michigan; 74 killed.

Morden, Manitoba (1933)
Flash flood washes away bridges, ruined crops, and killed livestock.

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