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A tornado is a violently rotating column of air in contact with the surface and a cumuliform cloud base. Tornado formation is caused by the stretching and aggregating/merging of environmental and/or storm-induced vorticity that tightens into an intense vortex. There are various ways this may come about and thus various forms and sub-forms of ...
Tornadoes can occur anywhere in the U.S., according to the National Weather Service.Tornadoes are “most common in the central plains east of the Rocky Mountains and west of the Appalachians.”
The reason for the peak period for tornado formation in North America being skewed toward spring has much to do with temperature patterns in the U.S. Tornadoes often form when cool, polar air traveling southeastward from the Rocky Mountains overrides warm, moist, unstable Gulf of Mexico air in the eastern states. Tornadoes tend to be commonly ...
This F5 rated tornado in Wichita Falls, Texas in April 1964, has a "rope" structure, these usually occurs when a tornado first form or when a tornado ropes out and dissapate. This nocturnal wedge EF5 tornado near Greensburg, Kansas in May 2007, has a "wedge" structure, these can reach widths of 1 mile or even 2 miles in rare occasions.
Tornadoes can form any time the conditions are right. They take many shapes, but they all start the exact same way. Here's what to know.
Some of the most notorious twisters in U.S. history were wedge tornadoes, including the EF5 that leveled Joplin, Missouri, on May 22, 2011, and the El Reno tornado, which was a jaw-dropping 2.6 ...
These tornadoes may form at different times or exist simultaneously but are separate from one another. A phenomenon similar to multiple vortices is the satellite tornado . Unlike the multiple-vortex tornado, where smaller vortices form inside the main tornado, a satellite tornado develops outside the main tornado's circulation.
Greenfield, where storms were particularly severe, had tornadoes on the ground by 3:30 p.m. Around 4:50 p.m., severe weather had crossed the Des Moines metro and a damaging tornado touched down ...