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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.
A house blown off its foundation near Hanska, Minnesota, as a result of the Comfrey F4 tornado.

The 1998 Comfrey–St. Peter tornado outbreak was an unseasonably-strong tornado outbreak which affected the Upper Midwest region of the United States on March 29, 1998. A strong area of low pressure combined with a warm front and favorable upper-level dynamics to produce 16 tornadoes across the region—14 in Minnesota and two in Wisconsin. Thirteen of the tornadoes in Minnesota were spawned by a single supercell thunderstorm. This supercell remained intact for approximately 150 miles (240 km) as it moved across the southern part of the state during the late-afternoon hours.

Over $235 million in damage (1998 US$) was recorded from the tornadoes, two people were killed, and 21 others were injured. Most of the damage was caused by three tornadoes—one rated F4 on the Fujita scale that hit the town of Comfrey, Minnesota, an F3 that hit St. Peter, Minnesota, and an F2 that hit Le Center, Minnesota. Gustavus Adolphus College in St. Peter was especially hard-hit, with several buildings damaged or destroyed, 2,000 trees lost, and nearly 80% of the windows on the campus shattered. In Comfrey, 75% of the structures in the town were damaged or destroyed, including the local K–12 school. Seven counties in southern Minnesota were later declared federal disaster areas. (Full article...)
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The islands of Hawaii, situated in the Pacific Ocean, rarely experience tornadoes, averaging about one per year. The state ranks as the 48th most active in terms of touch downs, with 40 confirmed tornadoes since 1950. None of these tornadoes have caused loss of life and none exceeded F2 intensity. This list of tornadoes in the state is likely incomplete, as official records date back only to 1950 for tornadoes in the United States, and Hawaii did not become a state until August 1959.

The most costly tornado occurred on January 28, 1971. Although the intensity of it is unknown, damages from the tornado were estimated at $2.5 million. The largest outbreak of tornadoes took place during a two-day span, starting on January 27, 1971 and ending the following day. During this event, three tornadoes were confirmed and two others were reported. (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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Tornado tracks of 1958.

This page documents the tornadoes and tornado outbreaks of 1958, primarily in the United States. Most tornadoes form in the U.S., although some events may take place internationally. Tornado statistics for older years like this often appear significantly lower than modern years due to fewer reports or confirmed tornadoes.

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List of tornadoes by year

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2024 tornado activity

Tornado anniversaries

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  • 1942 – A tornado struck southern Brazil, destroying many buildings including two hotels and a church. Reports from the day after indicate that more than 20 people were killed and hundreds were injured.
  • 1992 – An F5 tornado moved through Chandler, Minnesota, destroying 75 homes and damaging more than 90 other structures. One person was killed and 40 were injured.
  • 2014 – A strong supercell spawned a complex family of six tornadoes in northeastern Nebraska, four of which were rated EF4. The most destructive of these destroyed about half of Pilger and killed one person. A simultaneous EF4 tornado east of the town killed another person. Video of these twin tornadoes was widely shown in news media and online.

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Hailstones dropped during the storm, compared to a cricket ball (7 cm or 2.8 in diameter)

The 1999 Sydney hailstorm was the costliest natural disaster in Australian insurance history, causing extensive damage along the east coast of New South Wales. The storm developed south of Sydney on the afternoon of Wednesday, 14 April 1999, and struck the city's eastern suburbs, including the central business district, later that evening.

The storm dropped an estimated 500,000 tonnes of hailstones in its path. The insured damage bill caused by the storm was over A$1.7 billion (equivalent to $3.8 billion in 2022), with the total bill (including uninsured damage) estimated to be around $2.3 billion. It was the costliest single natural disaster in Australian history in insured damage, surpassing the $1.1 billion in insured damage caused by the 1989 Newcastle earthquake. Lightning also claimed one life during the storm, and the event caused approximately 50 injuries. (Full article...)

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Related WikiProjects

The scope of WikiProject Severe weather is to write articles about severe weather, namely thunderstorms and tornadoes. Their talk page is located here.

WikiProject Weather is the main hub for all articles that are weather-related. WikiProject Weather strives to improve articles in a variety of weather topics, including Tropical Cyclones, Severe Weather, General meteorology, Non-tropical Storms, Climate, Floods, Droughts and wildfires, Meteorological instruments and data, Meteorological Biographies, and Space Weather. If you would like to help, please visit the project talk page.

WikiProject Meteorology is a collaborative effort by dozens of Wikipedians to improve the quality of meteorology- and weather-related articles. If you would like to help, visit the project talk page, and see what needs doing. The project is currently being merged into WikiProject Weather.

WikiProject Tropical cyclones is a daughter project of WikiProject meteorology. The dozens of semi-active members and several full-time members focus on improving Wikipedia's coverage of tropical cyclones.

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