The severe weather threat, including multiple strong tornadoes, will extend well beyond the daylight hours, adding to the danger tremendously. AccuWeather's Bernie Rayno breaks down what to expect.

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,