This Day in National/World Weather History ...
20 May 1957 → An F5 tornado touched down southwest of Kansas City, then traveled 71 miles through the suburbs. The tornado killed 45 people and left a path of near-total destruction in its wake. All that remained at one house was a small table with a fish bowl sitting on top, with the fish still swimming inside. A canceled check from Kansas City was blown all the way to Ottumwa, IA, a distance of nearly 200 miles.
20 May 1996 → In Niagara, Ontario a tornado struck a drive-in theater that was about to show the feature movie, Twister.

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September 15, 1977:

Sioux Falls residents received a rude awakening during the morning hours as thunderstorms rolled through the city. Over two and one-half inches of rain fell in the city in an hour and 15 minutes. The large amount of rain in a short period of time led to street flooding in some areas. Lightning strikes from the storms also started several small fires.


Record Highs: Record Lows:
Aberdeen: 100 (1955) Aberdeen: 28 (1964)
Kennebec: 105 (1955) Kennebec: 28 (1961)
Mobridge: 104 (1948) Mobridge: 28 (1916)
Pierre: 104 (1948) Pierre: 32 (2011)
Sisseton: 101 (1955) Sisseton: 30 (2011)
Timber Lake: 105 (1948) Timber Lake: 26 (1916)
Watertown: 96 (1955) Watertown: 29 (1916)
Wheaton: 95 (1955) Wheaton: 30 (1916)

Record Precipitation:
Aberdeen: 1.30" (1921) Aberdeen: 0.1" (1903)
Kennebec: 1.20" (1924)
Mobridge: 0.47" (1967)
Pierre: 1.32" (2010)
Sisseton: 0.92" (2004)
Timber Lake: 0.49" (1968) Timber Lake: 2.0" (1912)
Watertown: 2.56" (2010)
Wheaton: 0.95" (2004)

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