Tornadoes and climate change, 4 April 2012. Tornado activity in 2012 is far ahead of average, with 401 tornadoes this year already, against the April 4th average of 268. Climate Nexus

In recent years, meteorologists have documented a rash of unusually early tornadoes. In addition, tornadoes are moving northward. The early March swarm of tornadoes was driven in part by unusually warm temperatures.

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