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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.
Thunderstorms can produce a severe wind report if there's a measured gust of 58 mph or greater, or if there are reports of damage to structures, trees or power lines caused by straight-line winds.
The most powerful, or EF-5, have winds above 200 mph and usually cause catastrophic damage. The tornado that flattened a swath of Iowa in May was an EF-4 tornado, and one of the deadliest of 2024.
Storm damage is seen on Jackson St., Friday, March 15, 2024 in Selma, Ini. The tornado that hit this street came as fast as it went, 10 seconds at its most intense point, say most people in Selma.
On July 4, the Environment and Climate Change Canada (ECCC), the Prairie and Arctic Storm Prediction Centre (PASPC), and the Northern Tornadoes Project (NTP) published a joint-damage survey, rating the tornado low-end EF4 with winds of 275 kilometres per hour (171 mph). This rating was based on major damage at a farmstead, where a well-built ...
The rating of any given tornado is of the most severe damage to any well-built frame home or comparable level of damage from engineering analysis of other damage. Since the Fujita scale is based on the severity of damage resulting from high winds, a tornado exceeding F5 is an immeasurable theoretical construct.
An EF4 tornado with wind speeds ranging from 166 to 200 mph can cause devastating damage. Most to all walls on a well-built house will likely collapse, and high-rise buildings can sustain ...
Each year, more than 2,000 tornadoes are recorded worldwide, with the vast majority occurring in North America and Europe. [9] In order to assess the intensity of these events, meteorologist Ted Fujita devised a method to estimate maximum wind speeds within tornadic storms based on the damage caused; this became known as the Fujita scale.