This Day in National/World Weather History ...
 20 November 1900 → A major tornado outbreak struck Tennessee, Alabama, Mississippi, and Arkansas, including two F4s. In Tunica County, MS an F4 tornado killed 15 people and threw the bodies half a mile downstream. Another F4 tornado was heading right for the center of Columbia, TN, but turned to the north at the last minute and grazed the northwest side of town. Still, 27 people lost their lives homes were "turned into kindling wood." Unpicked cotton was stripped from the stalks and deposited upon trees making them appear to be covered with snow.
 20 November 1944 → "Darkness at Noon." After a decade of drought, dust storms frequented Australia. On this day a thick dust blanketed Mildura for eight hours, and the railway lines to Balranald and Moulamein were blocked by sand.
 20 November 1979 → A blizzard struck Cheyenne, WY producing a record 19.8 inches of snow in 24 hours, and a record total of 25.6 inches in 40 hours. Strong winds created huge drifts stopping all transportation.

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February 21, 1969:

Heavy snow along with winds of 15 to 25 mph caused blowing and drifting snow which closed many roads. Snowfall amounts of 5 to 12 inches were common across eastern South Dakota from the 20th into the 22nd. Some snowfall amounts included, 5 inches at Clear Lake and Brookings, 6 inches at Wilmot, 7 inches at Milbank, Redfield and Mitchell, 8 inches at Conde, 9 inches at Webster, Sioux Falls, and Huron.

February 21, 1975:

Across northwest and north central South Dakota, snow driven by very strong winds created blizzard conditions. Schools were closed and traffic was halted on many roads. Snowfall amounts included, 3 inches at Timber Lake, 4 inches southeast of McLaughlin, and 8 inches at Eagle Butte.


Record Highs: Record Lows:
Aberdeen: 61 (1977) Aberdeen: -30 (1918)
Kennebec: 75 (2000) Kennebec: -25 (1936)
Mobridge: 66 (1982) Mobridge: -25 (1936)
Pierre: 73 (1982) Pierre: -17 (1936)
Sisseton: 58 (1961) Sisseton: -19 (2001)
Timber Lake: 68 (1982) Timber Lake: -21 (1941)
Watertown: 58 (2000) Watertown: -31 (1918)
Wheaton: 54 (1961) Wheaton: -29 (1918)

Record Precipitation: Record Snowfall:
Aberdeen: 0.25" (1917) Aberdeen: 2.5" (1917)
Kennebec: 0.26" (1935) Kennebec: 2.5" (1957)
Mobridge: 0.50" (1927) Mobridge: 2.2" (1972)
Pierre: 0.33" (1957) Pierre: 3.3" (1957)
Sisseton: 0.45" (1969) Sisseton: 5.0" (1962)
Timber Lake: 0.22" (1975) Timber Lake: 3.0" (1975)
Watertown: 0.50" (1957) Watertown: 3.0" (1957)
Wheaton: 0.96" (2011) Wheaton: 11.6" (2011)


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