Alabama now holds the record for having the largest number of top-category tornadoes in more than 60 years, weather officials said.
The National Weather Service upgraded a tornado that hit Alabama in April to an EF-5, the strongest tornado on the Enhanced Fujita scale.
That change puts the number of EF-5 tornadoes in Alabama at seven since 1950. EF-5 tornadoes have winds measured at more than 200 mph.
The reclassified twister was one of two EF-5 storms in a swarm of more than 60 tornadoes that hit Alabama on April 27, killing 240 people.
Texas, Oklahoma, Iowa and Kansas have seen six EF-5 tornadoes since 1950.