Portal:Tornadoes

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 May 2009 Southern Midwest Derecho was an extreme progressive derecho and mesoscale convective vortex (MCV) event that struck southeastern Kansas, southern Missouri, and southwestern Illinois on May 8, 2009. Thirty-nine tornadoes, including two of EF3 strength on the Enhanced Fujita Scale, were reported in addition to high non-tornadic winds associated with the derecho and MCV. Due to the abnormal shape of the storm on radar and the extremely strong winds, many called this an "inland hurricane." A new class of storm, the Super Derecho, has been used to describe this event after analysis in 2010. Embedded supercells produced hail up to baseball size in southern Missouri, a rare event in a derecho. A wind gust of 106 mph (171 km/h) was recorded by a backup anemometer at the Southern Illinois Airport after official National Weather Service equipment failed. This derecho was the last of a series of derechos that occurred at the beginning of May. (Full article...)
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This is a list of all tornadoes that were confirmed by local offices of the National Weather Service in the United States in November and December 2010. (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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Map of 2001 United States tornado paths
This page documents notable tornadoes and tornado outbreaks worldwide in 2001. Strong and destructive tornadoes form most frequently in the United States, Bangladesh, and Eastern India, but they can occur almost anywhere under the right conditions. Tornadoes also develop occasionally in southern Canada during the Northern Hemisphere's summer and somewhat regularly at other times of the year across Europe, Asia, and Australia. Tornadic events are often accompanied with other forms of severe weather, including strong thunderstorms, strong winds, and hail. (Full article...)
List of tornadoes by year

2024 tornado activity

Map of tornado warnings and confirmed tornadoes from the outbreak

A large, major, and deadly tornado outbreak occurred across the Central and Southern United States from May 6–10, 2024, as a result of a slow-moving trough that was moving across the country. The Storm Prediction Center (SPC) issued a tornado-driven high risk convective outlook for portions of central Oklahoma and extreme southern Kansas early on May 6. Millions of people were put under a particularly dangerous situation (PDS) tornado watch later that evening, as many tornadoes were reported across the region, particularly in Oklahoma, where a violent EF4 tornado struck the towns of Barnsdall and Bartlesville, Oklahoma. Severe and tornadic weather spread eastward over the Mississippi, Ohio, and Tennessee Valleys over the next two days, with a nocturnal outbreak occurring in the latter on May 8, as tornadic supercell thunderstorms produced many tornadoes across the states of Tennessee, northern Alabama and western Georgia. The system responsible for the outbreak finally moved offshore by May 10 after producing several more tornadoes across the Southeast, including two EF2 tornadoes and hurricane-strength straight-line winds that moved through Tallahassee. This large outbreak came less than two weeks after a similarly large and deadly outbreak occurred across most of the same regions.

Five fatalities directly linked to the tornadoes were confirmed from the outbreak: two in Oklahoma on May 6, one in Tennessee on May 8, and two in Florida on May 10. Three non-tornadic deaths related to straight-line winds also occurred. In addition, during the outbreak, tornado emergencies were issued for three consecutive days between May 6–8 for damaging tornadoes; the last time that this phenomenon had occurred was exactly 21 years prior, when tornado emergencies were issued for four consecutive days between May 6–9, 2003, during a similarly large outbreak.

Overall, 179 tornadoes were confirmed from the outbreak, most of which were clustered around Oklahoma, Michigan, Tennessee, and Alabama, earning 51 points on the outbreak intensity score. (Full article...)

Tornado anniversaries

August 31

September 1

September 2

  • 1947 – An F3 tornado moved along the road between Burgettstown and Eldersville, Pennsylvania, killing 2 people and injuring 20. Debris from one home was carried 4 miles (6.4 km). An F2 tornado killed one person in Brockton, Massachusetts.
  • 2002 – A small tornado outbreak hit Wisconsin. An F3 tornado tore through downtown Ladysmith, destroying 40 buildings and injuring 27 people. Damaged totaled $25 million. A poorly-anchored church was swept away. One other person was injured by an F1 tornado near Wausau. An F2 tornado caused $3.9 million in damage in Gilman.

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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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