This Day in National/World Weather History ...
 21 December 1944 → The Battle of the Bulge lasted from December 16, 1944 to January 25, 1945. By this time Germany was clearly losing World War II and Hitler was hoping to regain advantage if the attack would occur in bad weather to prevent the Allied Air Forces from being effective. As the Americans occupied the strategic position of Bastogne, the German army surrounded the city. However because of bad weather, planes were unable to fly and provide supplies by air drop to the American Forces. On December 29 the weather finally cleared up and much needed supplies were received. The Americans then launched a counteroffensive, but soldiers had to fight the cold and snow as well.
 21 December 1967 → The City Hall and a large portion of the business district of Potosi, MO was destroyed by an F4 tornado. There were 52 injuries and 3 deaths.

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July 28, 1986:

Very intense thunderstorms developed in South Dakota and Nebraska and moved into Iowa. The first of these storms produced a tornado that crossed into Iowa south of Sioux City and slammed into a coal-burning power plant. This tornado caused between 25 and 50 million dollars damage to the plant. The tornado continued across farmland, then damaged a store and flattened a motel in Sloan before lifting up.


Record Highs: Record Lows:
Aberdeen: 109 (1975) Aberdeen: 44 (1981)
Kennebec: 117 (1933) Kennebec: 42 (1971)
Mobridge: 111 (2006) Mobridge: 43 (1915)
Pierre: 111 (2006) Pierre: 46 (1971)
Sisseton: 105 (1975) Sisseton: 44 (1904)
Timber Lake: 108 (2006) Timber Lake: 40 (1971)
Watertown: 105 (1933) Watertown: 41 (1928)
Wheaton: 108 (1917) Wheaton: 45 (1925)

Record Precipitation:
Aberdeen: 1.35" (1955)
Kennebec: 0.83" (2004)
Mobridge: 0.58" (2002)
Pierre: 0.80" (1986)
Sisseton: 1.60" (1942)
Timber Lake: 1.20" (1983)
Watertown: 2.45" (1953)
Wheaton: 1.28" (1918)


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