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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                   Weather History...

October 1, 1971:

A rare October tornado touched down in Sully County. This short lived tornado damaged a ranch home and large barn, 6 miles WSW of Onida.

October 1, 2012:

A drought continued to intensify and expand across parts of central and northeast South Dakota through October, resulting in severe to exceptional drought conditions. Many locations continued the trend of recording well below normal precipitation totals for the month. Exceptional drought conditions expanded into Stanley, Jones and southern Lyman counties. Extreme drought conditions spread into southern Dewey, Sully, Hughes, Lyman, Jones, southwest Hyde, Hamlin, Codington, Grant and Deuel counties. Severe drought conditions spread into Corson, Dewey, northwest Hyde, Hand, Faulk, Edmunds, McPherson, Brown, eastern Clark and southern Roberts counties.

Record Highs: Record Lows:
Aberdeen: 92 (1922) Aberdeen: 21 (1974)
Kennebec: 96 (1953) Kennebec: 20 (1958)
Mobridge: 95 (1953) Mobridge: 23 (1936)
Pierre: 96 (1953) Pierre: 25 (2003)
Sisseton: 90 (1992) Sisseton: 22 (2003)
Timber Lake: 94 (1953) Timber Lake: 22 (1985)
Watertown: 91 (1951) Watertown: 20 (2003)
Wheaton: 91 (1992) Wheaton: 27 (2003)

Record Precipitation:
Aberdeen: 1.00" (1894)
Kennebec: 2.16" (2004)
Mobridge: 0.81" (1971) Mobridge: 2.3" (1999)
Pierre: 0.82" (1977) Pierre: 3.9" (1999)
Sisseton: 2.32" (2009)
Timber Lake: 0.75" (1977) Timber Lake: 5.0" (1999)
Watertown: 1.47" (2009)
Wheaton: 0.58" (2009) is the U.S. government's official web portal to all federal, state and local government web resources and services.