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.

This Day in Weather History Archive

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September 20, 1970:

In the late afternoon golf ball hail fell in and around Redfield with a tornado reported just north of Doland. No damage was reported with the hail or the tornado.

September 20, 1972:

About 430 pm, in Southeast South Dakota a tornado caused an estimated 95,000 damage to property and 50,000 damage to crops in Utica and nearby rural areas. Buildings were damaged, trees and power lines were downed.


Record Highs: Record Lows:
Aberdeen: 94 (1937) Aberdeen: 20 (1901)
Kennebec: 103 (1937) Kennebec: 21 (1918)
Mobridge: 95 (1960) Mobridge: 25 (1918)
Pierre: 104 (1937) Pierre: 33 (1983)
Sisseton: 91 (1941) Sisseton: 28 (1973)
Timber Lake: 95 (1914) Timber Lake: 28 (1997)
Watertown: 91 (1941) Watertown: 20 (1918)
Wheaton: 95 (1984) Wheaton: 24 (1918)

Record Precipitation:
Aberdeen: 1.50" (1989)
Kennebec: 2.10" (1950)
Mobridge: 0.96" (1996)
Pierre: 2.65" (1989)
Sisseton: 1.39" (2007)
Timber Lake: 1.35" (1996)
Watertown: 1.14" (2004)
Wheaton: 1.20" (2004)


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