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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April 14, 1991:

Thawing ice on top of a television tower fell onto buildings below in Garden City, Clark County. The ice had accrued during a freezing rain event on the 11th and 12th. No one was injured, but damage estimates ranged from $35,000-$40,000.


Record Highs: Record Lows:
Aberdeen: 86 (1942) Aberdeen: 9 (1928)
Kennebec: 89 (1942) Kennebec: 7 (1928)
Mobridge: 92 (1942) Mobridge: 8 (1928)
Pierre: 90 (1942) Pierre: 17 (1986)
Sisseton: 84 (1942) Sisseton: 19 (1905)
Timber Lake: 90 (1942) Timber Lake: 7 (1928)
Watertown: 89 (2003) Watertown: -5 (1928)
Wheaton: 88 (2003) Wheaton: 9 (1928)

Record Precipitation: Record Snowfall:
Aberdeen: 0.77" (1986) Aberdeen: 4.1" (1986)
Kennebec: 1.44" (1919) Kennebec: 5.0" (1986)
Mobridge: 1.20" (1912) Mobridge: 5.0" (1986)
Pierre: 1.34" (1986) Pierre: 13.4" (1986)
Sisseton: 2.66" (1986) Sisseton: 2.0" (1968)
Timber Lake: 1.17" (1930) Timber Lake: 2.0" (1986)
Watertown: 3.25" (1912) Watertown: 4.0" (1947)
Wheaton: 2.00" (1986) Wheaton: 3.0" (1961)


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