State media said more than 80 people fell into the water when strong winds hit the scenic area in Guizhou province on Sunday afternoon.

A sudden storm capsized four boats on the Wu River in southwestern China's Guizhou province Sunday, leaving nine dead and one person missing, according to state media. More than 80 people ended up in the water after strong winds and a fast-moving rain and hail storm struck the popular scenic area,

Millions in the Upper Midwest face the possibility of a severe thunderstorm outbreak Monday—the start of several days of extreme weather threats across the country this week.

The main threats are strong to severe winds, large hail up to 1 inch in diameter and lightning. Localized flooding and an isolated tornado are possible.

South Florida from Lake Okeechobee east and south is under a marginal threat for severe weather, which is the lowest level on a 5-tier threat scale. Still, very cold air aloft will mean a few strong thunderstorms are possible with damaging winds up to 58 mph and potentially large hail.