U.S. Hasn't Seen An EF5 Tornado In 11 Years, Longest Gap In (Recorded) History
The 11-year EF5 tornado drought is the longest span since official U.S. records began in 1950.
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The 11-year EF5 tornado drought is the longest span since official U.S. records began in 1950.
Eleven years after a tornado devastated Moore, Okla., it remains the most recent tornado to be rated EF5, the strongest possible rating. The 11-year gap is the longest since official U.S. records began in 1950.
The Engineering Laboratory at NIST, Gaithersburg, is proud to host the 6th annual
It's been a record-long time since the last EF5 tornado, meaning one with wind gusts over 200 mph. But the danger of violent tornadoes hasn't gone away.
A team from the National Construction Safety Team at the National Institute of Standards and Technology has been on the case.