Anyone living close to a creek or river, I would be taking precautions for a major rainstorm expected to hit on Thursday with creek and rivers rising to flood stage by Friday Afternoon. After crossing the Delaware River at Washington Crossing this morning, I really had a chance to see how swollen the rivers have been over the last few days. With another 2-4 inches of rain coming Thursday, I could definitely see places like Yardley, New Hope, and Langhorne being flooded on Friday and Saturday.
Here is a cool graphic that shows the amount of rain that Philly might get on Thursday: Click Picture to Enlarge

Because someone requested it, here is the 5 day forecast:
Wednesday: Partly sunny in the morning, becoming cloudy by the afternoon High: 48 (higher temps the longer the sun is out) Low: 31
Thursday: Heavy rain throughout the day (2-4 inches of rain). Flood Watch. Hi: 54 Low: 40
Friday: Rain ending in the morning. Skies clearing rapidly by the afternoon. Hi: 50 Low: 28
Saturday: Mostly sunny skies Hi: 53 Low: 32
Sunday: Repeat of Saturday Hi: 52 Low:32
yessss you are awesome