Coldest air of the fall chills Mid-Atlantic and Northeast

The coldest temperatures so far this season have overspread the Northeast and Mid-Atlantic this weekend. Numerous Freeze Warnings, Watches, and Frost Advisories are in effect, according to the National Weather Service.

A warm-up is in store this week. Meanwhile, heavy rain and flash flooding continue to be possible in portions of the Southwest and Great Basin.

http://www.weather.gov/