This Day in National/World Weather History ...
 21 August 1883 → What was likely an F5 tornado devastated the north side of Rochester, MN. The tornado derailed a train and leveled farms. 40 people were killed.
 21 August 1888 → A "grand spectacle" of four waterspouts near Jacobson, MD overturned boats and moved ashore. 15 people were injured. Another tornado moved east-northeast near Still Pond, MD killing 10 people in a cannery. A total of 11 deaths and 40 injuries were reported from this tornado.
 21 August 1918 → Tyler, MN suffered a direct hit by an F4 tornado. Six hundred buildings were damaged or destroyed and 36 lives were taken, including three when the town's hospital was struck.
 21 August 1984 → The State Fair in Pueblo, CO had to be closed during a vicious hailstorm. Nine people were hurt, including one seriously.

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                   Weather History...


January 6, 1962:

Snow, strong winds, and sub-zero temperatures along with near blizzard conditions caused hazardous driving conditions across the area from the 6th into the 9th. Snowfall of generally 2 to 6 inches with winds of 30 to 40 mph caused widespread low visibilities along with drifts up to 4 foot high across central and northeast South Dakota.

January 6, 1989:

Heavy snowfall of 8 to 12 inches with local amounts of 24 to 26 inches fell in northern Minnesota the 6th through the 8th. The heavy snow was followed by an Arctic intrusion which brought in 35 to 50 mph winds. This caused a shutdown the Red River Valley. Snowdrifts were from 5 to 10 feet in some areas. Roads had to be closed. The strong winds caused near-blizzard conditions along with extremely low wind chills.

January 6, 2010:

A strong Alberta Clipper low pressure system tracked southeast through the northern plains on Tuesday night, January 5th through Wednesday, January 6th. Sufficient Pacific moisture interacted with bitter cold Arctic air surging south from Canada resulting in widespread snowfall over much of central and northeast South Dakota. Snowfall amounts generally ranged from 2 to 11 inches of fluffy snow. The snowfall began across central and northeast South Dakota from the late afternoon through the late evening of the 5th. As the system tracked east, behind it strong north to northwest winds gusted to as high as 50 mph resulting in widespread blizzard conditions with near whiteout conditions at times. In fact, Interstate 90 across Jones and Lyman counties was closed for a time due to poor travel conditions. Schools throughout the region were also closed on the 6th, with some closed on the 7th. While there were several accidents reported, none resulted in major injures. The snow along with the strong winds also collapsed a hay shed. Some snowfall amounts included, 2 inches at Blunt and Timber Lake; 4 inches at Gettysburg and east of Hayes; 6 inches at Pierre, Andover and Doland, McLaughlin and Pollock; 7 inches at Britton, Sisseton, Gann Valley, Murdo, Eureka, Mobridge, Leola, Faulkton, and Ipswich; 8 inches in Aberdeen, Bryant, and near Summit; 9 inches near McIntosh and Roscoe, Wilmot and Castlewood; 10 inches in Clear Lake, and 11 inches at Watertown.


Record Highs: Record Lows:
Aberdeen: 49 (2012) Aberdeen: -30 (1909)
Kennebec: 65 (1935) Kennebec: -37 (1988)
Mobridge: 54 (1954) Mobridge: -39 (1912)
Pierre: 52 (1990) Pierre: -26 (1988)
Sisseton: 48 (2012) Sisseton: -26 (1951)
Timber Lake: 54 (1954) Timber Lake: -24 (1912)
Watertown: 45 (2012) Watertown: -29 (1909)
Wheaton: 58 (2012) Wheaton: -25 (1916)

Record Precipitation: Record Snowfall:
Aberdeen: 0.60" (1895) Aberdeen: 7.3" (2010)
Kennebec: 0.20" (2010) Kennebec: 3.0" (2010)
Mobridge: 0.28" (1967) Mobridge: 5.5" (1967)
Pierre: 0.25" (2010) Pierre: 5.4" (2010)
Sisseton: 0.48" (2010) Sisseton: 6.7" (2010)
Timber Lake: 0.13" (1967) Timber Lake: 5.0" (1967)
Watertown: 0.60" (1967) Watertown: 11.0" (2010)
Wheaton: 0.64" (1980) Wheaton: 7.0" (1989)


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