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 23, 2002:

High winds of 35 to 50 mph gusting to over 70 mph occurred across much of central and northeast South Dakota. The strong winds caused some spotty damage to property and trees. With the dry conditions, dust was stirred up by the winds and caused reduced visibilities at many locations. The highest wind gust was 72 mph at Onida.


Record Highs: Record Lows:
Aberdeen: 90 (2009) Aberdeen: 14 (1956)
Kennebec: 91 (1990) Kennebec: 20 (1963)
Mobridge: 89 (2009) Mobridge: 16 (1956)
Pierre: 88 (2009) Pierre: 20 (1956)
Sisseton: 89 (1990) Sisseton: 16 (1956)
Timber Lake: 86 (1989) Timber Lake: 15 (1927)
Watertown: 89 (1939) Watertown: 18 (1956)
Wheaton: 91 (1990) Wheaton: 16 (1918)

Record Precipitation: Record Snowfall:
Aberdeen: 1.85" (1902) Aberdeen: 2.8" (2001)
Kennebec: 1.15" (2001) Kennebec: 12.0" (2001)
Mobridge: 0.74" (2008) Mobridge: 1.0" (1965)
Pierre: 1.06" (1965) Pierre: 5.0" (2001)
Sisseton: 1.13" (1960) Sisseton: 8.0" (2001)
Timber Lake: 0.75" (1915) Timber Lake: 2.0" (1965)
Watertown: 1.65" (1932) Watertown: 0.7" (1947)
Wheaton: 1.35" (2001) Wheaton: 8.0" (2001)


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