Dozens of tornados were reported Sunday in the Midwest and ten states were under weather alerts. This is something we typically see in May and not in November. Bryce Anderson is the senior agriculture meteorologist with DTN in Omaha and says this basically was one of these “perfect storm” events.
Anderson says November weather can bring strong winds but there is usually not enough warmth and moisture to form strong storms. However, a low pressure system across the plains created the warm temperatures and the instability to create the strong storm system. A high wind sheer and a cold front collided with the warmer temperatures over Illinois, Indiana, southeast Missouri and Kentucky and created the ingredients for thunderstorms and super-cells capable of tornados.
Anderson says the circumstances that happened over the weekend should be a checkpoint in terms of weather awareness. He says mild conditions offer the potential for severe weather during out-of-season points. He says tornados can even happen in the winter months if conditions line up.
Anderson says it appears that an El Nino weather event is building in the Pacific so that indicates colder temperatures will stay to the north of Nebraska through the end of the year. It also indicates snow will more likely target that area as well.