I have heard a few people say that there is a chance that this hurricane, after becoming a tropical storm inland, could turn around and just go back down to the coast...
going back OVER the same areas, dumping even more rain.
Has anyone else heard of that as a possibility?
Yes, that is definitely a possibility. It might even be a probability. Since a couple days now many of the computer models show the storm's forward motion stalling and then rotating around the area, presumably dumping a couple feet of rain (a la Floyd).
The reason we got hurt by Allison so bad was that it would come ashore, flood the crap out of one area of the city, then go back out to sea, reload, restrengthen, and then come ashore again and flood a new area or reflood an old one. This went on for five days. I have a feeling this one is going to be a huge rainmaker. Don't know what is going to happen with the wind.