Flash Flood Watch In Effect 3pm This Afternoon Through This Evening.

The National Weather Service in Mount Holly has issued a

* Flash Flood Watch for portions of northern Delaware...southern New
  Jersey...and southeast Pennsylvania...including the following
  areas...in northern Delaware...New Castle. In southern New
  Jersey...Camden, Gloucester, Northwestern Burlington, and Salem.
  In southeast Pennsylvania...Delaware, Eastern Chester, Eastern
  Montgomery, Lower Bucks, Philadelphia, Upper Bucks, Western
  Chester, and Western Montgomery.

* From 3 PM EDT this afternoon through this evening.

* Showers and thunderstorms are expected to develop by mid afternoon
  over western Maryland into central Pennsylvania and move eastward
  into the region by late this afternoon into this evening. These
  storms will be capable of producing heavy rainfall over a short
  period of time which may result in flash flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.