A powerful weather system is poised to strike the Eastern United States on Monday, threatening 12 million people with damaging winds exceeding 75 miles per hour and potential strong tornadoes. The National Weather Service warns the area from northern South Carolina to Maryland faces the greatest danger, where meteorologist Evan Bentley emphasizes the dual threats of damaging winds and tornadoes impacting a large population. This follows severe weather that swept through the Mississippi, Ohio, and Tennessee valleys on Sunday, causing widespread damage and a reported tornado in Arkansas.