A sweeping cold front made for an active Tuesday along the Northeast's Interstate 95 corridor, spawning numerous showers and thunderstorms, and disrupting travel for millions.

The Philadelphia area is enduring another round of storms Tuesday afternoon after going through a round overnight.

A tornado warning is in effect for parts of Berks and Montgomery counties in Pennsylvania until 5:15 p.m., according to the National Weather Service. Showers and storms returned by the late afternoon and early evening,