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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July 2, 1921:

Barns were destroyed on two farms near Frederick. A boy who could not make it to the cellar was killed in the open near a barn. This is the earliest know death from a significant, estimated F2 tornado in Brown County.

July 2, 1960:

Hail shredded corn, flattened grain and hay, and pounded soybeans into the ground in a strip extending from Clinton to Montevideo in Minnesota. Leaves and bark were stripped from trees. Hail stones were reported to pile up to a depth of four feet in low spots. One farmer reported the loss of 2000 turkeys. Twelve barns demolished, many outbuildings destroyed and several home damaged by winds. Near Appleton, 45 cars of a moving 174 car freight train derailed by the wind, one hanger destroyed, and 2 plans were damaged. In Big Stone County alone, the cost to repair power lines and poles estimated to be near 10,000 dollars. Total crop acreage affected was near 64,000 acres. The three counties of Big Stone, Swift and Chippewa Counties was designed a disaster area.

July 2, 2005:

A line of severe thunderstorms with very strong straight-line winds moved from northeast Wyoming and southeast Montana across northwest South Dakota during the evening. Widespread wind gusts of 60 to 80 mph affected northwest South Dakota; breaking tree limbs, downing trees, and knocking down snow fences. The strong winds capsized a boat on the Belle Fourche Reservoir near Orman Dam. Five people, including an infant, were rescued by emergency personnel with no one injured. The strongest winds were reported north of Newell, near Castle Rock, where gusts estimated at 100 mph damaged a barn roof and ripped a chimney off a house. Hail to the size of quarters was also reported across parts of the area, and combined with the wind, caused some minor damage.


Record Highs: Record Lows:
Aberdeen: 103 (1949) Aberdeen: 37 (1945)
Kennebec: 108 (1936) Kennebec: 37 (1945)
Mobridge: 105 (1949) Mobridge: 40 (1945)
Pierre: 105 (1936) Pierre: 43 (1968)
Sisseton: 100 (1949) Sisseton: 44 (1994)
Timber Lake: 107 (1949) Timber Lake: 41 (1968)
Watertown: 100 (1911) Watertown: 43 (1940)
Wheaton: 96 (2002) Wheaton: 44 (1932)

Record Precipitation:
Aberdeen: 1.33" (2000)
Kennebec: 1.45" (1912)
Mobridge: 1.24" (1981)
Pierre: 2.13" (1981)
Sisseton: 3.65" (1903)
Timber Lake: 0.88" (1912)
Watertown: 1.15" (1955)
Wheaton: 1.03" (1930)


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