From Mount Holly AFD-
Meanwhile, an old frontal boundary remains across Delmarva and extends back to the southwest towards Zeta. Rain becomes steadier and heavier going through the late morning hours as the boundary interacts with tropical moisture associated with Zeta. The heaviest of the rain will fall late this afternoon and into this evening as Zeta passes through Delmarva and southern New Jersey. Pressure gradient tightens up, with northeast winds overall increasing to around 15 mph with gusts to 25 mph, except for the coasts, where winds will range from 15-25 mph with 25-35 mph gusts. Gusts to 50 mph are possible right along the Delaware shores, so will hoist a Wind Advisory for late this afternoon into early this evening with the approach and immediate passage of Zeta for Delaware Beaches.