10 of the Worst Tornadoes in United States History

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7. Hackleburg, Alabama, on April 27, 2011

The Hackleburg tornado began at 3:05 pm. As it approached the town from the southwest, the storm strengthened to an EF4 rating on the Enhanced Fujita scale, which rates the wind speed and intensity of a tornado. Continuing on its path to Hackleburg, the storm escalated to an EF5, with winds up to 210 mph. The tornado ended at approximately 3:28 p.m. — about 23 minutes after it began.

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