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How do tornadoes form in the winter?

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Deadlier in winter. No time of year is entirely free from tornado risk. Like spring, fall is a transitional period when masses of warm and cool air are more likely to collide and create the thunderstorms that can trigger twisters. read more

Winter tornadoes can be particularly deadly, not because they're stronger, but because they tend to move faster. Tornadoes in the winter and early spring are often associated with strong, frontal systems that form in the Central States and move east, according to the National Severe Storms Laboratory. read more

In the United States, winter tornadoes commonly occur in the Southeast: Mississippi, Alabama, Georgia. The driver for these storms is the Gulf of Mexico, which is still quite warm even in winter and which offers a huge amount of latent heat, more than enough to foster tornadoes. read more

In addition, tornadoes in the winter often form in a squall line and it can be difficult to pick out individual rotations that can form quickly. 4. They're Most Likely to Form in the South. Portions of the South are where tornadoes form most frequently during the winter due to the availability of moisture from the Gulf of Mexico. read more

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