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The drought began on May 20, 2013, following the dissipation of the 2013 Moore, Oklahoma EF5 tornado. [11] [12] Several tornadoes since the Moore EF5 have reached the 200 miles per hour (320 km/h) wind speeds needed for a tornado to be classified as an EF5, including the 2013 El Reno EF3 tornado and 2015 Rochelle–Fairdale EF4 tornado, with wind speeds measured in excess of 295 miles per hour ...
This is a list of tornadoes which struck primary and secondary schools or post secondary colleges or universities, organized by the tornado’s intensity. These scales—the Fujita scale , the Enhanced Fujita scale , and the International Fujita scale —are used to rate and estimate the done by a tornado.
F5 and EF5 Tornadoes in the United States 1950–2019 Detailed map. The tornadoes on this list have been formally rated F5 by an official government source. Unless otherwise noted, the source of the F5 rating is the U.S. National Weather Service (NWS), as shown in the archives of the Storm Prediction Center (SPC) and National Climatic Data ...
Before the Moore tornado, the blockbuster tornado season in 2011 led to the confirmation of five EF5 twisters, including the Joplin, Missouri, EF5 that killed 161 people. A total of 50 tornadoes ...
How is TORCON used to predict a tornado? TORCON uses a 0-10 scale to indicate how likely a tornado is within 50 miles of a given location, according to Weather Station Advisor.A TORCON level of 2 ...
From 2000 to 2023, only two tornadoes - both EF4s - have claimed the lives of people sheltering in a school - the 2013 Moore, Oklahoma, tornado and the 2007 Enterprise, Alabama, tornado that ...
This new warning system, named Warn-on-Forecast System (WoFS), was created by the Hazardous Weather Testbed housed in the National Weather Center in Norman, Oklahoma. During the experiment and test, the WoFS gave a high indication of “near-ground rotation” in and around the area of Greenfield, Iowa between 2-4 p.m.
These tornadoes killed 295. Tornado warnings began being issued in 1950 (and tornado watches in late 1952); [7] and there is a very sharp decrease in number of killer tornado events at schools after this time, as well as a large decrease in death tolls from tornadoes overall. [8]