Severe thunderstorms, flooding rainfall, damaging winds, wildfires, record temperatures and snow are all possible across the United States.

A dangerous storm system is expected to sweep through the St. Louis region Friday evening, bringing the potential for destructive winds and fast-moving tornadoes, with the metro area under a Level 4 out of 5 risk for severe weather.

The National Weather Service expects to see thunderstorms this weekend statewide. Here's what to know and how bad it will get.

There is the potential for severe weather across the southeastern parts of the United States over the next several days, including Louisiana, Alabama, Tennessee and Georgia. On Sunday, that severe weather threat extends into north and central Florida.

A powerful storm system is set to bring multiple rounds of dangerous severe thunderstorms, with numerous strong tornadoes possible, from the Midwest to the Southeast beginning Friday. Threat level: A total of about 100 million people live in areas under threat from straight-line wind damage,