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The old scale lists an F5 tornado as wind speeds of 261–318 mph (420–512 km/h), while the new scale lists an EF5 as a tornado with winds above 200 mph (322 km/h), found to be sufficient to cause the damage previously ascribed to the F5 range of wind speeds.
The Moore, Oklahoma tornado of May 20, 2013, is the most recent tornado to be rated EF5 as of 2025. The Xenia, Ohio, F5 tornado of April 3, 1974.This was one of two tornadoes to receive a preliminary rating of F6, which was downgraded later to a rating of F5.
Following the creation of the Fujita scale in 1971, the National Weather Service office in Northern Indiana rated the worst of the damage F4. Tornado expert Thomas P. Grazulis rated the tornado F5 in 1993. [11] In 2000, the National Oceanic and Atmospheric Administration along with the Nuclear Regulatory Commission rated the tornado F5. [15]
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 ...
At times, multiple vortices swirled within the tornado, which lasted for about 45 minutes and traveled about 44 miles. For less than a second, the researchers calculated wind speeds of more than ...
This page documents all tornadoes confirmed by various weather forecast offices of the National Weather Service in the United States from May to June 2022. On average, there are 276 confirmed tornadoes in May and 243 in June. [1]
-March 2022 - 234 tornadoes were documented in the U.S., the most for any March dating to 1950. That was largely from three separate outbreaks – March 5-6, March 21-22 and March 30-31.
The International Fujita scale (abbreviated as IF-Scale) is a scale that rates the intensity of tornadoes and other wind events based on the severity of the damage they cause. [1] It is used by the European Severe Storms Laboratory (ESSL) and various other organizations including Deutscher Wetterdienst (DWD) and State Meteorological Agency ...