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Portal:Tornadoes

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The Tornadoes Portal

A tornado near Anadarko, Oklahoma, in 1999
Tornadoes are violently rotating columns of air that are in contact with the Earth and either a cumulonimbus or a cumulus cloud. Tornadoes are often referred to as twisters, whirlwinds, or cyclones. While most tornadoes attain winds of less than 110 miles per hour (180 km/h), are about 250 feet (80 m) across, and travel a few miles (several kilometers), the wind speeds in the most intense tornadoes can reach 300 miles per hour (480 km/h), are more than two miles (3 km) in diameter, and stay on the ground for dozens of miles (more than 100 km). Various types of tornadoes include the multiple vortex tornado, landspout, and waterspout. Other tornado-like phenomena that exist in nature include the gustnado, dust devil, fire whirl, and steam devil. Most tornadoes occur in North America (in the United States and Canada), concentrated in a region nicknamed the Tornado Alley. Tornadoes also occur in South America, South Africa, Europe, Asia, and Oceania.

The March 1997 tornado outbreak was a major tornado outbreak that struck portions of the central and southern United States on March 1–2, 1997. Affecting areas mostly from Arkansas to Kentucky, the outbreak produced 58 tornadoes, including three violent (F4) tornadoes, and killed at least 27 people, including 25 in Arkansas alone and one death each in Mississippi and Tennessee. This was Arkansas' deadliest tornado outbreak since May 15, 1968, when 34 were killed in Jonesboro. Severe flooding also occurred across the Ohio and Tennessee Valleys, resulting in 16 Ohio counties and 44 Kentucky counties being declared disaster areas. The flash floods and damaging wind elsewhere caused 34 deaths across six states including 19 in Kentucky, five in Ohio, five in Tennessee, two in Texas and three in West Virginia. Damage estimates were about $1 billion (1997 USD) while 75,000 homes were damaged. (Full article...)

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Reflectivity (left) and relative velocity (right) radar loops of a thunderstorm that spawned an EF2 tornado in Longview, Texas, on December 23

Between November and December 2009, 51 tornadoes touched down across eight states. Collectively, the tornadoes injured nine people and wrought $20.36 million, much of which resulted from an EF3—the strongest tornado during the two-month period—that struck Lufkin, Texas, on December 23. Compared to annual averages, November was one of the quietest on record while December was one of the most active on record for their respective months. With only three confirmed events in November, the month ranks as the third quietest on record since 1950. The opposite is true for December, during which 45 tornadoes touched down; at the time, this was the second highest since 2000 and the sixth highest since reliable records began.

The month of November featured no tornado outbreaks while December featured two. The first spawned 7 tornadoes on December 2 and the second, more prolific event, resulted in 28 tornadoes from December 23–24. Twelve tornadoes touched down within the warning area of the National Weather Service office in Lake Charles, Louisiana—the largest such event in their jurisdiction since November 23, 2004. Both outbreaks were the result of strong extratropical cyclones that moved across the Southern United States, with tornadoes primarily developing along a cold front that extended south of the system's center or within supercells ahead of the front. (Full article...)

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An F5 tornado touched down on June 16, 1992, near Chandler, Minnesota. The tornado killed one person, destroyed 75 homes, and damaged over 100 other structures.

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List of tornadoes by year

2024 tornado activity

Map of tornado warnings and confirmed tornadoes from the outbreak sequence

A multi-day period of significant tornado activity along with significant derechos occurred across the Midwestern United States and the Mississippi Valley as well as an additional tornado in the Canadian province of Quebec. From May 19–27, 2024, two derechos occurred and tornadoes were reported across large portions of the Central United States, with multiple Particularly Dangerous Situation (PDS) watches issued across the sequence. On May 19, strong tornadoes occurred with isolated supercells in Colorado and Oklahoma while a derecho produced widespread wind damage and weak tornadoes across Kansas into the early morning hours of May 20. Limited tornadic activity took place on May 20, but another outbreak along with widespread damage struck mainly Iowa and Wisconsin on May 21. Five fatalities were confirmed with a large, violent, long-tracked EF4 tornado that went through Greenfield, Iowa. Scattered to widespread severe weather and tornadoes occurred over the next two days, including an EF2 tornado that injured 30 people on the west side of Temple, Texas. Another derecho formed in southwestern Nebraska late on May 23 and moved eastward, producing widespread wind damage and weak tornadoes through Nebraska and Iowa and northwestern Illinois before withering away in the northern part of the state during the morning hours of May 24.

A nocturnal outbreak occurred during the overnight hours of May 25 into May 26. An isolated supercell in northern Texas produced multiple tornadoes, including a low-end EF3 tornado that passed near Valley View, Texas, killing seven people. Another longer-lived supercell moved through northeastern Oklahoma and across northern Arkansas, producing several tornadoes along with straight-line winds of 100 mph (160 km/h). Two fatalities were confirmed from an EF3 tornado that struck Claremore, Oklahoma along with areas near Pryor. Later, it produced a very large EF3 tornado near Decatur, Arkansas, which became the largest tornado ever recorded in Arkansas. Another EF3 tornado killed four people near Olvey and Pyatt while an additional tornadic death occurred with yet another EF3 tornado that passed near Yellville and through Briarcliff. Another supercell in southern Missouri produced a low-end EF3 tornado that passed near Morehouse and through Sikeston, killing one. May 26 would be the most active day of severe weather; several rounds of squall lines and tornadic supercells moved through the Mid-Mississippi and the Ohio Valleys, producing widespread wind damage, large hail, and tornadoes. This included a very destructive, intense high-end EF3 tornado that prompted the issuance of four tornado emergencies across areas that had been previously impacted by the 2021 Western Kentucky tornado. One person was killed by this tornado. Severe weather activity became more isolated and scattered on May 27, marking the end of the outbreak sequence.

In all, 247 tornadoes occurred during the outbreak sequence; 21 people were killed by tornadoes while 10 other people died due to non-tornadic events as well. Over 240 people were injured. (Full article...)

Tornado anniversaries

November 9

  • 1864 – One of few known tornadoes from during the American Civil War hit Chester and Richview, Illinois at about 2:00 AM, killing at least five people, including four in Chester. There were rumors of up to 20 deaths. A ferry on the Mississippi River was destroyed with only the hull, engine, and boilers left behind.
  • 1926 – An estimated F3 tornado struck La Plata, Maryland, killing 17 people and injuring 65. Fourteen deaths were in a school that was thrown into a grove of trees and destroyed.

November 10

  • 1915 – A tornado outbreak affected the Midwestern United States with the worst impacts in Kansas. An F4 tornado destroyed 160 homes in Great Bend, Kansas, killing 11 people and injuring 75. Debris was carried 85 miles (137 km). At least 1000 sheep were killed, and dead ducks fell from the sky near Claflin, Kansas. Another F4 tornado killed four people in Zyba and Derby, Kansas.
  • 1957 – One of Japan's deadliest tornadoes hit Tomiye City in [[Nagasaki Prefecture, killing six people.
  • 2002 – The second day of a three-day tornado outbreak had its worst impacts across the Midwestern and Eastern United States, resulting in 32 deaths. An F3 tornado devastated Mossy Grove and Joyner, Tennessee, killing seven people and injuring 28. A long-track F3 tornado traveled 72 miles (116 km) across northern Alabama; all 7 deaths and 40 injuries were along a 10-mile (16 km) stretch in and near Saragossa. An F4 tornado, up to half a mile (0.8 km) wide, hit Van Wert and Roselms, Ohio, killing four people. Only one structure in Roselms was left standing.

November 11

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The following are images from various tornado-related articles on Wikipedia.

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Picture of a house destroyed by the Wallingford Tornado of 1878

Although historically the U.S. state of Connecticut is not typically known to fall casualty to tornadoes, more than 100 of these powerful storms have affected the state in modern history, resulting in at least 48 deaths, 780 injuries, and more than $500 million in damage. This list of tornadoes in the state is likely incomplete, as official records date back only to 1950 for tornadoes in the United States.

As with most of the northeastern United States, the number of tornadoes peaks in the summer months, normally in July or August. Hartford County has had the most tornadoes in the state, although since 1950 Litchfield County has reported the most tornadoes. Several areas have been struck more than once, and Waterbury has been struck by no less than four tornadoes since 1955. (Full article...)

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