wow. the thunderstorms, of course, also brought a ton of rain, flooding streets, making driving very, very dangerous. >> no one ever says tennis ball-sized or lacrosse ball. the same story in pennsylvania. pictures of flooding from elk county, northeast of pittsburgh. several serious thunderstorms rolled through, dropping 2 to 4 inches of rain an hour there. >> wow. >> that is a lot of rain. and look at this picture right now. this is why we tell you do not drive through standing water. the hazard lights will not help you. this picture is from ohio, not far from dayton. heavy rainfall there flooded the streets, obviously, stranding that car. several interstates were shut down for hours. some drivers left stranded until crews were able to push the water out of the way. >> wow. >> indra petersons tracking all of this today, where it's headed. what do we need to know, indra? >> busy morning for you. >> just a little bit. across the entire country we'll be talking about severe threats out there today. scatter and widespread, new york down through d.c., then a section around nashville, kind