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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June 14, 1970:

An estimated F3 tornado moved northeast from just southeast of Mound City. Barns and sheds were said to have been blown away on three farms.

June 14, 1985:

A thunderstorm produced golf ball size hail in the Castlewood area causing considerable damage to grain, corn, soybeans, and gardens. Some areas just south of Castlewood had hail piled up to six inches deep. Leaves were stripped from several trees. Wind gusts to 60 mph accompanied the hail. Another thunderstorm produced strong winds and damaging hail in Grant and Roberts Counties. North of Milbank along both sides of Highway 15, crops incurred considerable damage. An area 17 miles northeast of Sisseton into Browns Valley, to Mud Lake saw crop damage from golf ball size hail.

June 14, 2009:

An upper level disturbance combined with a warm front and very unstable air brought severe thunderstorms to parts of central and north central South Dakota. Hail up to the size of golf balls, flash flooding, along with several tornadoes occurred with these storms. Heavy rain caused flash flooding on the Moreau River with the bridge on Route 14 being overtopped. The bridge had to be closed west of Green Grass. A basement was also flooded three miles east of Green Grass along with several roads in the area in Dewey Country. A tornado touched down west of Hayes in Stanley County and traveled almost a mile before lifting. No damage occurred. A second tornado touched down east of Hayes with no damage occurring.


Record Highs: Record Lows:
Aberdeen: 99 (1933) Aberdeen: 34 (1969)
Kennebec: 105 (1979) Kennebec: 31 (1969)
Mobridge: 98 (1959) Mobridge: 39 (1969)
Pierre: 101 (1959) Pierre: 38 (1969)
Sisseton: 103 (1979) Sisseton: 38 (1958)
Timber Lake: 101 (1979) Timber Lake: 36 (1942)
Watertown: 100 (1979) Watertown: 37 (1927)
Wheaton: 101 (1979) Wheaton: 36 (1969)

Record Precipitation:
Aberdeen: 1.84" (1943)
Kennebec: 2.37" (1900)
Mobridge: 1.24" (2011)
Pierre: 1.48" (1953)
Sisseton: 2.24" (1914)
Timber Lake: 2.02" (1943)
Watertown: 1.34" (1975)
Wheaton: 2.23" (1975)


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