Tropical enhanced rains remain a possibility for parts of the region late this week and into the weekend as the combination of a tropical disturbance in the Gulf of Mexico (Tropical Storm Andrea, which will make landfall in Florida at some point late tomorrow) and an approaching cold front will combine to bring a lot of rain to portions of the region.
We pointed out yesterday that this is not a traditional tropical storm for us -- it's remnant rainfall that will interact with an approaching cold front. We've been here, done that in Philadelphia before...but whenever you have this situation, the potential for excessive rainfall definitely exists.
The brunt of the event looks to be Friday PM -- generally midday through Friday night as the tropical piece of energy pushes up the coast. Modeling varies a bit on timing but the GFS has been more consistent on suggesting that as the timeframe. Euro and NAM are slower, with the Euro the middle ground in timing...but by and large it is generally looking like a Friday PM brunt for rains and thunder.
Regardless of track, the risk for heavy rainfall in this timeframe does exist and with that comes the prospect for some flooding or flash flooding of the usual suspect streams around the region. Also looks like Friday evening could be a rather craptastic commute around town as well if this heavier rainfall times itself for that timeframe.