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A diagram showing the contributing weather systems to Tornado Alley in the United States, a loosely-defined area that is prone to tornadoes. Tornadogenesis is the process by which a tornado forms. There are many types of tornadoes, varying in methods of formation.
However, tornadoes are capable of both much shorter and much longer damage paths: one tornado was reported to have a damage path only 7 feet (2.1 m) long, while the record-holding tornado for path length—the Tri-State Tornado, which affected parts of Missouri, Illinois, and Indiana on March 18, 1925—was on the ground continuously for 219 ...
Tornadoes are "violently rotating columns of air" in contact with the ground, according to NWS.The humidity in Iowa means as tornadoes form, we see a cloud form inside of them, Gallus explained.
A diagram of tornado alley based on 1 tornado or more per decade. Rough location (red), and its contributing weather systems. Tornado Alley, also known as Tornado Valley, is a loosely defined location of the central United States and Canada where tornadoes are most frequent. [1]
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 ...
Tornadoes of 1912. Tornado outbreak of April 20–22, 1912; Tornado outbreak of April 27–29, 1912; Tornadoes of 1913. 1913 Easter tornado outbreak; Tornadoes of 1916. Tornado outbreak of June 5–6, 1916; Tornadoes of 1917. March 1917 tornado outbreak; Tornado outbreak sequence of May 25 – June 1, 1917; Tornadoes of 1918. 1918 Tyler tornado ...
Once it touches the ground, wind speeds pick up, forming a tornado. Once wind speeds get fast enough, these tornadoes can grab anything, from a roof off a home, to a car in a driveway.
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 ...