The same intense storm system responsible for over a foot of rain and violent winds and tornadoes in the southern United States into Wednesday night will continue to spin along and threaten the Eastern Seaboard and stretch through part of the Midwest with severe weather on Thursday, AccuWeather meteorologists warn. Close to 75 million people may be at risk of severe weather. Two main zones of severe weather will likely take center stage on Thursday. Some communities from Florida to Delaware and