Signal: December cold wave over Eastern U.S.
hotarctic

Arctic warming pushing cold wave south over eastern U.S.

Cold air sweeping southwards behind the fierce snowstorm that roared through the Upper Midwest over the weekend is bringing record low temperatures over much of the Southeast this morning. …the strongly negative NAO is back again this winter. High pressure has replaced low pressure over the North Pole, and according to NOAA, the NAO index [...]