This Day in National/World Weather History ...
 20 September 1845 → The "Great Adirondack Tornado," really a family of up to 4 tornadoes, traversed an incredible 275 miles, tearing down many thousands of trees across northern New York and northern Vermont. The damage path from the tornadoes and associated downburst winds was up to a mile and a half wide. Hailstones were as big as hens' eggs.
 20 September 1987 → A vivid rainbow was seen at Fort Simpson, in the Northwest Territories of Canada, during a visit by Pope John Paul II.

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January 21, 1999:

Widespread dense fog and freezing drizzle created treacherous driving conditions across part of northeast South Dakota from the evening of the 21st to around noon on the 22nd. The freezing drizzle ended in the early morning hours of the 22nd. As a result, slippery conditions developed, especially across Hamlin, Deuel, and Codington counties. Many vehicles slid into the ditch. There were a few accidents resulting in minor injuries. Numerous activities were canceled the evening of the 21st and many schools had delayed starts on the 22nd.


Record Highs: Record Lows:
Aberdeen: 57 (1942) Aberdeen: -31 (1949)
Kennebec: 60 (1942) Kennebec: -33 (1954)
Mobridge: 59 (1942) Mobridge: -33 (1949)
Pierre: 62 (1942) Pierre: -26 (1954)
Sisseton: 50 (1942) Sisseton: -31 (1970)
Timber Lake: 59 (1942) Timber Lake: -30 (1949)
Watertown: 50 (1933) Watertown: -30 (1954)
Wheaton: 47 (1981) Wheaton: -33 (1970)

Record Precipitation: Record Snowfall:
Aberdeen: 0.65" (1952) Aberdeen: 5.1" (1952)
Kennebec: 0.60" (1917) Kennebec: 6.0" (1917)
Mobridge: 0.60" (1917) Mobridge: 6.0" (1917)
Pierre: 0.59" (1952) Pierre: 6.0" (1952)
Sisseton: 0.47" (1952) Sisseton: 5.0" (1952)
Timber Lake: 0.57" (1952) Timber Lake: 6.5" (1917)
Watertown: 0.50" (1917) Watertown: 4.0" (1917)
Wheaton: 0.34" (1962) Wheaton: 4.0" (1962)


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