from the only road into edisto island. and overnight in camden county, georgia. it s utter chaos over here right now. reporter: elsa spawning an ef-2 tornado. flipping trailers at the east coast hub for the navy s fleet of nuclear submarines. debris everywhere. i come out and there s guys pushing his kids out the top door over here. reporter: nine people, including a pregnant woman, were hurt. and the tornado that touched down in jacksonville caught on surveillance camera. 1 110-mile-per-hour winds destroying everything. this power line came down and hit right on this fence and went bah-boom and then that porch came down. reporter: one person in jacksonville killed by a falling tree. as the northeast prepares for elsa, for the third day in a row, powerful severe thunderstorms slammed the region. rainwater pouring into this subway station in new york city. and david, here in new york city, we re already under a flash flood warning because of those storms. but here s the ot