Cold air dipping into the teens moves in; all eyes on potential weekend snowstorm

Cold air will move into the area overnight, making for a very cold Wednesday.
Temperatures will be in the high teens and 20s, but it will be sunny.
There is potential for a major snowstorm this weekend. Many details on the track and timing and intensity of this system will change before Saturday, but all signs point to a major storm off the eastern seaboard - there's just a question whether it hits us or it's just a glancing blow.
As of right now, the storm would affect us Friday night and Saturday.
OVERNIGHT: Mostly clear, brisk and much colder. Low of 14.
WEDNESDAY: Sunny, brisk and very cold. High of 24.
THURSDAY: Sunny and cold. High of 28.
FRIDAY: Cloudy with scattered flurries and snow showers. Steadier snow develops at night. High of 34.
SATURDAY: Cloudy and windy with snow. High of 26.
SUNDAY: Sunny, windy and cold. High of 25.