A look back at the warmest, coldest, wettest and snowiest Thanksgiving holidays in Chicago, going back to 1872.

They are examples of extreme low pressure systems ... For cyclones to occur and develop, the sea temperature must be 27°C for several weeks prior. Warm air then rapidly rises, creating low ...

In addition, “extremely cold Arctic air and severe winter weather swept southward into much of the U.S. in mid-January 2024, breaking daily low-temperature records from Montana to Texas,” said ...