The Fujita Scale - National Weather Service
网页Moderate tornado: 73-112 mph: The lower limit is the beginning of hurricane wind speed; peels surface off roofs; mobile homes pushed off foundations or overturned; moving autos pushed off the roads; attached garages may be destroyed. F2: Significant tornado: 113-157 mph: Considerable damage.
Enhanced Fujita scale - Wikipedia
网页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.
Fujita scale - Wikipedia
网页The Fujita scale, introduced in 1971 as a means to differentiate tornado intensity and path area, assigned wind speeds to damage that were, at best, educated guesses. [18] Fujita and others recognized this immediately and intensive engineering analysis was conducted through the rest of the 1970s.
Tornado - Wind Speed, Vortex, Destruction | Britannica
网页2024年9月25日 · The few measurements of violent tornado winds that have been made using Doppler radar and photogrammetry suggest that the maximum possible tangential wind speeds generated by tornadoes are in the range of 125 to 160 metres per second, or 450 to 575 km per hour (about 410 to 525 feet per second, or 280 to 360 miles per hour).
The Enhanced Fujita Scale (EF Scale) - National Weather Service
网页The Enhanced Fujita Scale or EF Scale, which became operational on February 1, 2007, is used to assign a tornado a 'rating' based on estimated wind speeds and related damage.
The Enhanced Fujita Scale: A Tornado Rating System
网页2024年5月4日 · Practically speaking, it is nearly impossible to measure the actual wind speed inside tornadoes, as they can destroy just about any unprotected weather instruments placed in their path.
Tornado Scale - The Enhanced Fujita Scale | TornadoFacts.net
网页Wind speeds between 158 to 206 mph (254 to 332 km/h) Severe damage. Roofs completely torn off well-constructed buildings, along with some walls, majority of trees uprooted, trains overturned, vehicles lifted off the ground. F4 Tornado. Wind speeds between 207 to 260 mph (333 to 418 km/h) Devastating damage.
Severe Weather 101: Tornado Basics - NOAA National Severe …
网页The EF-Scale takes into account more variables than the original Fujita Scale (F-Scale) when assigning a wind speed rating to a tornado, incorporating 28 damage indicators such as building type, structures and trees.
Tornadoes and the Enhanced Fujita Scale - National Geographic …
网页After a tornado has passed, experts assess the damage, estimate wind speeds, and categorize tornadoes according to the Enhanced Fujita Scale, with ratings from EF-0 to EF-5. EF-0 Wind gusts are estimated between 105 and 137 kilometers per hour (65 and 85 miles per hour).
The strongest winds in tornadoes are very near the ground - Nature
网页2023年2月24日 · The median maximum tornado windspeed is 31% stronger at 15 m above the ground compared to radar measurements from higher altitudes. This is in contrast to the vertical distribution of the...