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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August 5, 1987:

Six tornadoes touched down in central South Dakota. Five of theses tornadoes touched down in Lyman county, including three which did damage near Kennebec within 25 minutes of each other. One of the tornadoes destroyed three farms, downing outbuildings, power lines, granaries, and killing farm animals.

August 5, 2000:

A wet microburst with winds estimated at 120 mph caused heavy damage in and around Mitchell. Apartments and several mobile homes were destroyed, vehicles were overturned, and other damage occurred to buildings and vehicles. Widespread tree and power line damage also occurred. Ten people were injured, although the majority of the injuries were minor. The damage path was approximately a mile and a half long and a mile wide, extending over the southwest part of Mitchell.


Record Highs: Record Lows:
Aberdeen: 107 (1941) Aberdeen: 41 (1994)
Kennebec: 109 (1941) Kennebec: 43 (1994)
Mobridge: 108 (1941) Mobridge: 46 (2012)
Pierre: 109 (1941) Pierre: 48 (2012)
Sisseton: 101 (1934) Sisseton: 46 (1994)
Timber Lake: 106 (1941) Timber Lake: 46 (1946)
Watertown: 97 (1937) Watertown: 41 (1915)
Wheaton: 99 (1976) Wheaton: 48 (1990)

Record Precipitation:
Aberdeen: 1.08" (1960)
Kennebec: 1.02" (1950)
Mobridge: 1.99" (1950)
Pierre: 1.39" (1909)
Sisseton: 2.50" (1900)
Timber Lake: 1.10" (1918)
Watertown: 1.32" (1900)
Wheaton: 1.41" (1942)


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