The Enhanced Fujita Scale (EF Scale) - National Weather Service
The EF Scale was revised from the original Fujita Scale to reflect better examinations of tornado damage surveys so as to align wind speeds more closely with associated storm damage. The new scale has to do with how most structures are designed.
Enhanced Fujita Scale - National Weather Service
An Enhanced Fujita (EF) Scale, developed by a forum of nationally renowned meteorologists and wind engineers, makes improvements to the original F scale. This EF Scale has replaced the original F scale, which has been used to assign tornado ratings since 1971.
EF Scale - National Weather Service
The EF Scale takes into account more variables than the original F Scale did when assigning a wind speed rating to a tornado. The EF Scale incorporates 28 damage indicators (DIs) such as building type, structures, and trees.
First F5/EF5 Tornado in Iowa Since June 1976 - National Weather …
2017年5月15日 · This tornado first appeared as "the spinning underside of a saucer" (large rotating wall cloud) 3 miles southwest of Luther. The tornado moved northeast passing one mile north of Luther where it turned to the north. The massive tornado then passed through and destroyed the hamlet of Jordan.
EF5 Tornado Track: Franklin(AL) to Franklin(TN) - National Weather …
This is the storm survey information for the EF-5 tornado that devastated the Phil Campbell area in northwestern AL during the April 27th, 2011 historic tornado outbreak.
2008年5月25日 · NWS personnel have rated the Parkersburg-New Hartford-Dunkerton tornado as EF 5 (correlated to wind speeds up to 205 MPH) on the Enhanced Fujita Scale at the locations of maximum damage. This is the first EF5 tornado in Iowa since the …
The Tornado Outbreak of May 20, 2013 - National Weather Service
2013年5月20日 · A rating of EF-5 has been given to the tornado that affected the Newcastle, south OKC, and Moore areas in McClain and Cleveland Counties. The tornado had a path length of approximately 14 miles and was on the ground for approximately 40 minutes from 2:56 PM - …
On May 22, 2011, one of the deadliest tornadoes in United States history struck Joplin, Missouri, directly killing 158 people and injuring over 1,000. The tornado, rated EF-5 on the Enhanced Fujita Scale, with maximum winds over 200 mph, affected a significant part of a city
F5/EF-5 Tornadoes in Oklahoma (1905-Present) - National …
This tornado was part of the April 2, 1982 tornado outbreak which produced 56 tornadoes in 11 states, killing 30 persons and injuring another 383 people. This was the only F5 Tornado that occurred in the 1980's in Oklahoma.
4/27/2011 Tornado Outbreak: Text Summary - National Weather …
2011年4月27日 · The hardest hit areas in the Huntsville Forecast Area were impacted by two EF-5 (the strongest and most violent tornado classification on the Enhanced Fujita Scale) tornadoes. The first of these EF-5 tornadoes hit the communities of Phil Campbell and Oak Grove in eastern Franklin County Alabama, Mt. Hope in western Lawrence County, the Tanner ...