Photos: Frigid weather hits East

A woman exhales in the freezing temperatures of Philadelphia on Thursday, January 23. Driven by frigid arctic air, a powerful system is making a mess of things up and down the Eastern Seaboard, especially from Washington to Boston. More than a foot of snow has fallen in parts of the Northeast.

A woman exhales in the freezing temperatures of Philadelphia on Thursday, January 23. Driven by frigid arctic air, a powerful system is making a mess of things up and down the Eastern Seaboard, especially from Washington to Boston. More than a foot of snow has fallen in parts of the Northeast.