Motorists across Philadelphia, its suburbs and Southern New Jersey face a slower morning commute along many major roads this morning.

That will be especially true crossing area bridges.

A dense fog advisory is in effect until 10 a.m. Forecasters say the fog could reduce visibility to a quarter mile or less before it burns off.

Motorists are advised to slow down and leave plenty of distance between vehicles.

Traffic is reduced to 35 m.p.h. on the Ben Franklin, Walt Whitman and Betsy Ross Bridges, and to 25 m.p.h. on the Commodore Barry Bridge.

The National Weather Service forecast for the remainder of the day calls for a chance of showers and thunderstorms after noon. High is expected to reach 81 degrees.