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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 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.
The school was destroyed by the tornado. A school was damaged or destroyed by the tornado. A school was damaged or destroyed by the tornado. 1968 Oelwein tornado: F0–F5 [a] A middle school was destroyed by the tornado. [1] An elementary school was destroyed by the tornado. [1] 1968 Tracy tornado: F0–F5 [a] Tracy Elementary School
Eleven years later, it remains the most recent tornado to be rated EF5, the strongest possible rating on the Enhanced Fujita Scale. The 11-year gap is the longest since official U.S. records began ...
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 ...
Along Heaton Road, the tornado grew much wider, reaching EF5 intensity for the first time shortly thereafter. A metal farm building was completely destroyed, along with numerous homes, with some lower-bound homes being wiped off their foundations. The tornado maintained EF5 intensity, producing significant ground scouring, as it exited Shiloh. [11]
The last EF5 tornado to touch down in the United States was 10 years ago. On May 20, 2013, at least 24 people died after an EF5 tornado wreaked havoc across Moore, Oklahoma.
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]