If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... * WHAT...Visibility less than one quarter mile in dense fog. * WHERE...Portions of central and northern Delaware, central, northern, northwest and southern New Jersey and southeast Pennsylvania. * WHEN...Until midnight EST tonight. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...Drier are is forecast to start filtering in tonight, that will eventually improve conditions, especially by Saturday morning.