This Day in National/World Weather History ...
 18 April 1880 → Marshfield, MO was devastated by an F4 (estimated) tornado that killed 68 people in the town in just a few minutes, with another 24 dying later of their injuries.
 18 April 1905 → Hail up to one inch in diameter, accompanied by strong winds that blew it into drifts six inches tall, struck Spanish Wells, Bahamas. Hail is exceedingly rare in the Bahamas.
 18 April 1906 → San Francisco was shaken by a severe earthquake. Unusual easterly winds helped to spread the ensuing fires, nearly destroying the city. The Weather Bureau offices at San Francisco and San Jose were demolished.
 18 April 1949 → Tornadoes are extremely rare in Nevada, however on this date a low-end F2 twister struck near Reno. It was on the ground for 12 miles and damaged ranch buildings.
 18 April 1957 → A dust devil in Massachusetts lifted a small child 3 feet into the air and rolled 2 other children on the ground. Fortunately none were hurt. The dust devil was accompanied by a loud whistling sound as it moved westward. It occurred at the beginning of an unusual early season heat wave.

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June 21, 1956:

Barns, granaries, outbuildings and an airplane were destroyed northwest of Conde. This was caused by an estimated F2 tornado.

June 21 1961:

One or more tornadoes moved southeast along a distance from east of Aberdeen to the southeastern edge of Sioux Falls. A funnel cloud was first seen between Aberdeen and Groton and later on near Raymond. A tornado hit about 4 pm a few miles southwest of Clark with about 20 farm buildings demolished. One house was destroyed, killing an elderly lady and injuring one person. A boy was reportedly lifted high in the air and another woman carried 100 yards by winds. Both were injured. Between 4:30 and 5:00 pm, areas northeast of Willow Lake and in northern Kingsbury were hit with a total of 13 farm buildings destroyed or twisted off the foundations. Five buildings on one farm were destroyed and a house was unroofed near Oldham. The house roof was found several miles away. The tornado was of F3 strength.

June 21, 1962:

Hail, some as large as baseball size, but mostly golf ball size or smaller was observed between Bristol and Webster. Crop loss ranged from severe to light. Hail was 6 inches deep in some areas. A road grader was used to clear the road.

June 21, 1983:

An F3 tornado touched down at a resort area two miles west of Pollock. Eleven people fled the southwestern most cabin and crawled under a nearby cabin. The southwest cabin was completely destroyed and the cabin the group crawled under was moved five feet from its concrete block foundation. Four people were treated for injuries. A van, boat and trailer were demolished and a small car was heavily damaged. The tornado turned east and reformed four miles east of Pollock, where it touched down briefly and dissipated. Another F3 tornado touched down in open prairie three miles northeast of Glad Valley and moved northeast, creating a path of destruction as it progressed. On one farm, nine buildings were wiped out and scattered up to two miles away. Trees and poles were uprooted and scattered a half mile away. This tornado was estimated to be on the ground for six miles with a path width of 300 yards. A third tornado, rated F2, touched down seven miles south of Pollock. This tornado damaged several cabin roofs, a restaurant, and downed several trees. Boats were tossed in a lake and picnic tables were hurdles against cars.

June 21, 1995:

Numerous slow moving thunderstorms produced very heavy rains across north-central South Dakota from early morning to the early evening hours of the 21st, and again from early morning to the early afternoon hours on the 22nd. The two day rainfall amounts ranged from two to nearly seven inches across north-central South Dakota. Some rainfall amounts included; 2.12 inches at Gettysburg; 2.20 at Hoven; 3.33 at Roscoe and Eureka; 3.50 at 2.5W Bowdle; 3.60 at Trail City; 3.77 at Herreid; 4.00 at Firesteel; 4.45 at Bowdle; 4.50 at 20NW of Gettysburg; 5.06 at 9NE Timber Lake; 5.45 at Timber Lake; and 6.80 at 7NW Trail City. Many roads were flooded and closed. In the Timber Lake, Firesteel, and Isabel area, flooding washed gravel off the roads in 40 to 50 places. Some crops were also flooded. A bridge was washed out on the Dodge draw road just off U.S. Highway 83.


Record Highs: Record Lows:
Aberdeen: 108 (1988) Aberdeen: 31 (1902)
Kennebec: 108 (1988) Kennebec: 29 (1902)
Mobridge: 102 (1988) Mobridge: 43 (1972)
Pierre: 108 (1988) Pierre: 43 (1972)
Sisseton: 101 (1988) Sisseton: 36 (1902)
Timber Lake: 102 (1988) Timber Lake: 40 (1969)
Watertown: 105 (1988) Watertown: 31 (1902)
Wheaton: 96 (1988) Wheaton: 39 (1917)

Record Precipitation:
Aberdeen: 1.85" (2011)
Kennebec: 1.75" (2011)
Mobridge: 1.72" (1957)
Pierre: 2.19" (2002)
Sisseton: 1.96" (1941)
Timber Lake: 3.58" (1995)
Watertown: 2.61" (1956)
Wheaton: 2.98" (1941)


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