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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October 7, 1970:

On October 7th through the 9th, 1970 a record breaking early season snow storm hit parts of southern South Dakota. Snowfall of 5 to 9 inches was common across the southwest and south central on the 7th. Late on October 8th and into the 9th of 1970 the southeast portion of the state was hit. Vermillion received 6 inches of snow on the 9th and that is the largest amount ever recorded there for so early in the season. The 5 inches that fell in Sioux Falls is the earliest significant snow on record for the area. The heavy snows also affected portions of western Iowa and western Minnesota. Amounts of up to 7 inches were recorded in northwest Iowa. The heavy, wet snow snapped many tree branches and downed power lines. Sioux city recorded their heaviest snow for so early in the season. The snow was very wet and heavy, but melted quickly over the next several days.


Record Highs: Record Lows:
Aberdeen: 88 (2006) Aberdeen: 14 (1952)
Kennebec: 95 (1942) Kennebec: 15 (2000)
Mobridge: 91 (1956) Mobridge: 19 (2000)
Pierre: 91 (2003) Pierre: 20 (2000)
Sisseton: 88 (2003) Sisseton: 16 (1976)
Timber Lake: 86 (2010) Timber Lake: 14 (2000)
Watertown: 86 (2003) Watertown: 15 (1952)
Wheaton: 91 (1993) Wheaton: 21 (1976)

Record Precipitation:
Aberdeen: 1.13" (1977) Aberdeen: 3.3" (1970)
Kennebec: 1.28" (1946) Kennebec: 9.0" (1970)
Mobridge: 0.88" (1977) Mobridge: 2.9" (1946)
Pierre: 1.14" (1946) Pierre: 3.0" (1970)
Sisseton: 1.50" (1977)
Timber Lake: 1.14" (1994) Timber Lake: 4.5" (1946)
Watertown: 1.58" (1977) Watertown: 2.5" (1970)
Wheaton: 1.48" (1949)


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