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.

During the afternoon of April 27, 2011, a violent EF5 tornado touched down in eastern Mississippi, killing three people. Part of the historic 2011 Super Outbreak, the largest tornado outbreak on record, this was the first of four EF5 tornadoes to touch down that day and the first such storm in Mississippi since the 1966 Candlestick Park tornado. While on the ground for 30 minutes, it traveled along a 28.28-mile (45.51 km) path through four counties, leaving behind three deaths, eight injuries, and $1.1 million in damage.

The supercell thunderstorm that produced this tornado formed around 1:00 p.m. CDT south of Jackson, Mississippi. Traveling briskly to the northeast, it became severe within 25 minutes and potentially tornadic by 1:36 p.m. CDT. A tornado finally touched down at 2:30 p.m. CDT just east of the Philadelphia Municipal Airport. It quickly intensified and began producing EF5 damage by 2:38 p.m. CDT; extreme ground scouring, up to 2 feet (0.61 m) deep in places, occurred in northeastern Neshoba County. After crossing into Kemper County, the tornado obliterated a mobile home, killing all three inside. It reached EF5 strength a second time near the Kemper–Winston county line where extreme ground scouring again took place and pavement was scoured from roads. Extensive tree damage took place elsewhere along the track and it ultimately dissipated at 3:00 p.m. CDT about 6 miles (9.7 km) north of Mashulaville. (Full article...)
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This page lists all the confirmed and probable tornadoes which have touched down in Canadian provinces & territories.

Experts have estimated that around 230 tornadoes occur in Canada each year, though only around 60 are formally confirmed. with most occurring in Southern Ontario, the southern Canadian Prairies and southern Quebec. Canada ranks as the second country in the world with the most tornadoes per year, after the United States of America. Of the average 60 confirmed tornadoes each year, Alberta and Saskatchewan both average between 14 and 18 tornadoes per season, followed by Manitoba and Ontario with normally between 8 and 14 tornadoes per season. Quebec is another recognized tornado-prone zone averaging between 4 and 8 tornadoes each year. Atlantic Canada and Interior British Columbia are also recognized tornado zones averaging between 0 and 4 tornadoes each year. The Canadian Territories are not typically seen as tornado-prone regions, however tornadoes can occur in the region. The peak season for tornadoes and severe thunderstorms in Canada is in the summer months, although tornadoes in Canada have occurred in spring, fall and very rarely winter. (Full article...)
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An F3 tornado in Le Sueur County, Minnesota, on August 24, 2006.

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Tracks of all US tornadoes in 1965

This page documents the tornadoes and tornado outbreaks of 1965, 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.

(Full article...)
List of tornadoes by year

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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 7

  • 1840 – the second-deadliest tornado in U.S. history destroyed the central and northern parts of Natchez, Mississippi and nearby areas, killing at least 317 people. Most of the deaths were in boats on the Mississippi River, which was experiencing high traffic at the time. The death toll may have been much higher, as there were unverified reports that hundreds of slaves were killed in Louisiana. The deaths of slaves in the pre-Civil War United States were not always counted.
  • 1846 – A tornado devastated Grenada, Mississippi, killing at least 21 people. There were likely additional deaths later on as people succumbed to their injuries.

May 8

  • 1882 – Deadly tornadoes touched down across Oklahoma and Arkansas. An F4 tornado destroyed much of McAlester, Oklahoma, killing 21 people. An F2 tornado destroyed much of a plantation near Silver, Arkansas, killing two people and hundreds of livestock. Another nine deaths were from other tornadoes.
  • 1964 – A short-live but large and destructive F4 tornado struck the Anchor Bay area of Chester Township, Michigan, killing 11 people, injuring 224, and destroying 132 homes. Because of the high water table, few homes in the area had basements where people could take shelter, in spite of a 20-minute tornado warning.
  • 1965 – An F4 destroyed 90% if Primrose, Nebraska, killing four people. The body of a truck was carried or rolled 2 miles (3.2 km). An F5 tornado completely swept away farms near Colome, South Dakota, resulting in one injury but no fatalities.

May 9

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The California Closets Warehouse that was severely damaged by the tornado

The 2006 Westchester County tornado was the strongest and largest tornado in Westchester County, New York since the 1904 Chappaqua tornado. It touched down there on Wednesday, July 12, 2006, and traveled 13 miles (21 km) into southwestern Connecticut during a 33-minute span through two states. The tornado touched down at 3:30 p.m. EDT (19:30 UTC) on the shore of the Hudson River before becoming a waterspout and traveling 3 mi (5 km) across the river. Coming ashore, the tornado entered Westchester County and struck the town of Sleepy Hollow at F1 intensity. After passing through the town, it intensified into an F2 tornado and grew to almost a one-quarter mile (400 m) in diameter. The tornado continued through the county, damaging numerous structures, until it crossed into Connecticut at 4:01 p.m. EDT (20:01 UTC). Not long after entering the state, it dissipated in the town of Greenwich at 4:03 p.m. EDT (20:03 UTC). When the tornado entered Westchester County, it was the eighth known tornado to either touch down or enter the county since 1950.

Two barns and a warehouse were destroyed, and a large stained-glass window was shattered. Numerous homes and businesses were damaged and thousands of trees were uprooted. There were no fatalities and only six minor injuries were associated with the storm. The cost of damages was estimated at $12.1 million. (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.

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