The coldest outbreak of the season is pushing south into the eastern United States this week. Temperatures will be running as low as 30 to 40 degrees below normal across the Ohio Valley and Mid-Atlantic on Friday morning. Thursday night’s departure from normal temperatures is shown above in Celsius. (tropicaltidbits.com) The coldest air of the season is surging south this week, leading up to what could be historic cold for parts of the eastern United States. Thursday and Friday’s polar outbreak could set all-time February low records from Tennessee to Virginia. With a fresh coat of snow, Washington has the potential to dip below zero for the first time since 1994 . All of this is courtesy of a plume of not just Arctic, but Siberian air that has been trudging across the North Pole and into North America over the past week. With the cold plume already washing over the […]