Flash flood watches and warnings and high wind warnings and advisories are in place across the southern and central Appalachians, it said, with area specific information being issued by local National Weather Service offices.
The 2017 Atlantic hurricane season's 15th storm, Ophelia, has formed in the center of the northern Atlantic Ocean. It is moving north-northeast at 5 miles per hour, with sustained winds of 40 miles per hour.
Ophelia wasn't expected to go very far this week and would stay safely away from land. So Ophelia - the next name on the center's list - could attach itself to a storm sooner rather than later.
Another tropical storm has formed in the Atlantic basin, but forecasters say it now poses no threat to the Caribbean.
Ophelia is expected to move toward the east-northeast and east Monday night, then turn toward the east-southeast Tuesday.
It was the first hurricane to make landfall in the state since Hurricane Katrina in 2005.
As of 11 a.m. ET, the tropical storm was moving to the north, north east at 5 miles per hour. "Not because we think it's a threat". It was a Category 1 hurricane when it came ashore outside Biloxi early Sunday, its second landfall after initially hitting southeastern Louisiana on Saturday evening.
The storm left nearly 70,000 Americans without power, majority in Alabama, and caused flooding along the MS coast.