As millions of people hit the road and the skies to head back home after their Labor Day or summer ventures Monday evening, locally drenching storms could cause travel delays.
The storms will be hit-or-miss, but a few locations have the potential to be hit hard by blinding downpours, flash and urban flooding and sporadic power outages from gusty winds.
There is the potential of storms on a more regional basis Monday evening, when compared the weekend.
Boston and Providence, R.I., were hit by urban flooding Sunday morning. Part of Philadelphia was hit with a torrential downpour Monday morning.
Storms through Monday night could affect multiple major metropolitan areas including Boston, New York City, Philadelphia, Pittsburgh, Buffalo, Cincinnati, Nashville, Atlanta, Raleigh and Washington, D.C.
An approaching cool front will attempt to squeeze the humidity out of the atmosphere by lifting it into a couple of lines and several clusters of strong thunderstorms through Monday night.
The remnants of these storms will last into Tuesday along the immediate Atlantic Seaboard, so that additional delays and disruptions are possible for those still at the beaches or commuting back to work or school.
However, a push of cooler and less humid air will filter from northwest to southeast across much of the Eastern states during the middle of the week, diminishing the risk of showers and thunderstorms.