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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October 24, 1989:

A storm in the western U.S. produced up to three feet of snow in the mountains around Lake Tahoe, with 21 inches reported at Donner Summit. Thunderstorms in northern California produced 3.36 inches of rain at Redding to establish a 24 hour record for October, and bring their rainfall total for the month to a record 5.11 inches. Chiefly "Indian Summer" type weather prevailed across the rest of the nation. Fifteen cities in the north central U.S. reported record high temperatures for the date as readings soared into the 70s and 80s. Record highs included 74 degrees at International Falls, Minnesota and 86 degrees at Yankton, South Dakota. Record highs also occurred across parts of central and northeast South Dakota. The record highs were 80 degrees at Mobridge and Sisseton, 83 degrees at Aberdeen, and 84 degrees at Pierre.


Record Highs: Record Lows:
Aberdeen: 83 (1989) Aberdeen: 6 (1917)
Kennebec: 87 (1948) Kennebec: 6 (2002)
Mobridge: 80 (1989) Mobridge: 12 (1917)
Pierre: 84 (1989) Pierre: 15 (1987)
Sisseton: 80 (1989) Sisseton: 15 (1955)
Timber Lake: 81 (1978) Timber Lake: 11 (1987)
Watertown: 80 (1989) Watertown: 9 (1917)
Wheaton: 79 (1978) Wheaton: 17 (1955)

Record Precipitation:
Aberdeen: 0.47" (1975) Aberdeen: 1.9" (1975)
Kennebec: 0.40" (1975)
Mobridge: 0.33" (1953) Mobridge: 0.4" (1981)
Pierre: 0.93" (1975)
Sisseton: 0.97" (1975) Sisseton: 0.2" (2001)
Timber Lake: 0.21" (1953)
Watertown: 0.54" (1975) Watertown: 0.3" (1981)
Wheaton: 1.06" (1995) Wheaton: 5.0" (1919)

Note: All precipitation records are from 1932 to the present


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