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Definitions. A tornado is a violently rotating column of air, in contact with the ground, either pendant from a cumuliform cloud or underneath a cumuliform cloud, and often (but not always) visible as a funnel cloud. [ 20 ] For a vortex to be classified as a tornado, it must be in contact with both the ground and the cloud base.
Tornadoes also develop occasionally in southern Canada during summer in the Northern Hemisphere and somewhat regularly at other times of the year across Europe, South Africa, Japan, Australia and New Zealand. Tornadic events are often accompanied by other forms of severe weather, including thunderstorms, strong winds and hail.
Tornadoes in the United States 1950-2019. A tornado strikes near Anadarko, Oklahoma. This was part of the 1999 Oklahoma tornado outbreak on May 3, 1999. Tornadoes are more common in the United States than in any other country or state. [1][2] The United States receives more than 1,200 tornadoes annually—four times the amount seen in Europe ...
Tornadoes in the United States 1950-2019. These are some notable tornadoes, tornado outbreaks, and tornado outbreak sequences that have occurred in North America.. The listing is U.S.-centric, with greater and more consistent information available for U.S. tornadoes.
List of Ohio tornadoes. An F4 tornado in Van Wert on November 10, 2002. Tornadoes in the U.S. state of Ohio are relatively uncommon, with roughly 16 tornadoes touching down every year since 1804, the year with the first ever event in the state. [1] Many of Ohio's tornadoes are violent, and there have been four recorded F5 or EF5 Tornadoes in ...
This article lists various tornado records. The most "extreme" tornado in recorded history was the Tri-State tornado, which spread through parts of Missouri, Illinois, and Indiana on March 18, 1925. It is considered an F5 on the Fujita Scale, holds records for longest path length at 219 miles (352 km) and longest duration at about 3⁄ hours ...
Tornado climatology. Areas worldwide with the highest frequency of tornadoes are indicated by orange shading. Tornadoes have been recorded on all continents except Antarctica. They are most common in the middle latitudes where conditions are often favorable for convective storm development. The United States has the most tornadoes of any ...
Prior to 1950 in the United States, only significant tornadoes are listed for the number of tornadoes in outbreaks. Due to increasing detection, particularly in the U.S., numbers of counted tornadoes have increased markedly in recent decades although the number of actual tornadoes and counted significant tornadoes has not. In older events, the ...