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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May 22, 1963:

The late spring freeze continued through the early morning hours with many locations reporting lows in the lower 20s. Some low temperatures include: 18 degrees in Andover; 20 degrees in Britton, 4 NW of Gann Valley, Leola and Roscoe; 21 degrees Castlewood, Ipswich, Kennebec, Redfield, 2 NW of Stephen, and 1 west of Summit; 22 degrees in Aberdeen, Eureka, 1 west of Highmore, McLaughlin, and 4 west of Mellette.

May 22, 2010:

An EF2 tornado in eastern Walworth County crossed into western Edmunds County and intensified into a large EF4 tornado as it struck several farms in its path. At the first farm, several large cottonwood trees were uprooted along with damage to several trailers. Three grain bins were also destroyed with debris located several hundred yards to the northeast. The residence suffered some shingle and antenna damage. The tornado then tracked northeast to a second farm where several outbuildings were damaged or destroyed along with widespread tree damage. The main residence at this location suffered no damage. Several grain cars were also rolled about 100 yards into the trees behind the house. The large tornado continued to track northeast to a third farm to the north of Bowdle. The main residence suffered major damage to walls with part of the roof structure removed. Widespread tree damage was sustained with many of the trees completely debarked with only the stumps of the largest branches remaining. Two large garages were completely destroyed with the concrete slab wiped clean. The vehicles in one garage were rolled or tossed from 25 to 100 yards away. It is estimated that one vehicle flew through the air 75 to 100 yards resting in the tree shelter belt to the north of the residence. Several other outbuildings were completely destroyed. The tornado then toppled six to eight metal power transmission towers as it moved to the north of the farm. One tower was sheared off from the concrete footings and traveled an estimated 400 yards. Ground scouring was visible along the path of these towers. The large tornado continued to track east crossing over State Highway 47 where a state radio tower was toppled. The tornado lifted shortly thereafter. The highest wind speeds were estimated to be from 166 to 200 mph.


Record Highs: Record Lows:
Aberdeen: 92 (1928) Aberdeen: 22 (1963)
Kennebec: 96 (1954) Kennebec: 21 (1963)
Mobridge: 91 (1966) Mobridge: 27 (1963)
Pierre: 94 (1966) Pierre: 27 (1963)
Sisseton: 92 (1964) Sisseton: 27 (1963)
Timber Lake: 91 (1967) Timber Lake: 25 (1963)
Watertown: 92 (1964) Watertown: 22 (1931)
Wheaton: 97 (1964) Wheaton: 28 (1963)

Record Precipitation:
Aberdeen: 1.23" (2010)
Kennebec: 1.68" (2007)
Mobridge: 1.15" (1986)
Pierre: 1.98" (2007)
Sisseton: 1.55" (1988)
Timber Lake: 1.74" (2010)
Watertown: 2.48" (1972)
Wheaton: 1.91" (1933)


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