New rounds of severe thunderstorms and life-threatening, potentially catastrophic, flooding risks are brewing in the central and eastern United States Tuesday, putting more than 50 million people at risk this week.

Severe storms are moving across Oklahoma, bringing a significant flooding threat and low tornado risk Tuesday evening into Wednesday morning. KOCO 5 First Alert Storm Chasers are tracking storms moving across Oklahoma.

At least one person has died in southwest Oklahoma after flash flooding hit the region, with authorities warning people to stay off the roads as severe weather warnings continue.