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 1999 Bridge Creek–Moore tornado was a large, long-lived and exceptionally powerful F5 tornado in which the highest wind speeds ever measured globally were recorded at 135 metres per second (302 mph; 486 km/h) by a Doppler on Wheels (DOW) radar. Considered the strongest tornado ever recorded to have affected the metropolitan area, the tornado while near peak intensity devastated southern portions of Oklahoma City, Oklahoma, United States, along with surrounding suburbs and towns to the south and southwest of the city during the early evening of Monday, May 3, 1999. Parts of Bridge Creek were rendered unrecognizable. The tornado covered 38 miles (61 km) during its 85-minute existence, destroying thousands of homes, killing 36 people (plus an additional five indirectly), and leaving US$1 billion (1999 USD) in damage, ranking it as the fifth-costliest on record not accounting for inflation. Its severity prompted the first-ever use of the tornado emergency statement by the National Weather Service.

The tornado first touched down at 6:23 p.m. Central Daylight Time (CDT) in Grady County, roughly two miles (3.2 km) south-southwest of the town of Amber. It quickly intensified into a violent F4, and gradually reached F5 status after traveling 6.5 miles (10.5 km), at which time it struck the town of Bridge Creek. It fluctuated in strength, ranging from F2 to F5 status before it crossed into Cleveland County where it reached F5 intensity for a third time shortly before entering the city of Moore. By 7:30 p.m., the tornado crossed into Oklahoma County and battered southeastern Oklahoma City, Del City, and Midwest City before dissipating around 7:48 p.m. just outside Midwest City. A total of 8,132 homes, 1,041 apartments, 260 businesses, eleven public buildings, and seven churches were damaged or destroyed. (Full article...)
List of selected tornado articles

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This is a list of notable microbursts. (Full article...)
List of selected tornado lists

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Radar image of a supercell thunderstorm near Houston, Mississippi, on April 27, 2011.

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Tornado tracks of 1959.
Tornadoes and tornado outbreaks of 1959 were tornadoes that appeared primarily in the United States in that year. 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. (Full article...)
List of tornadoes by year

Related portals

2024 tornado activity

This page documents all tornadoes confirmed by the European Severe Storms Laboratory or various governments or universities across Europe during 2024. Unlike the United States, the original Fujita Scale and the TORRO scale are used to rank tornadoes across the continent. (Full article...)

Tornado anniversaries

May 27

  • 1896 – An F4 tornado devastated portions of St. Louis, Missouri and East St. Louis, Illinois, killing at least 255 people, the third-highest death toll of any U.S. tornado. The deaths of some victims may not have been recorded as their bodies were washed down the Mississippi River. Other tornadoes on this day killed a total of 50 people.
  • 1997 – A slow-moving F5 tornado obliterated the Double Creek Estates subdivision in Jarrell, Texas, killing 27 people. The event is notable for the extreme damage it inflicted: homes were swept away with debris reduced to small pieces, 525 ft (160 m) sections of asphalt were peeled from roads, and up to 18 in (46 cm) of soil was removed in places.

May 28

  • 1880 – A short-lived F4 tornado, described as "a funnel blazing with balls of fire," touched town in Savoy, Texas and rapidly intensified, leveling the business district and the northeastern part of town. Thirteen people were killed in Savoy, and one other was killed just outside of town. The body of a child was reportedly carried half a mile (0.8 km).

May 29

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

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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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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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