Cross-country storm poised to deliver extreme weather across central and eastern US this weekend

A cross-country storm will explode in strength as it moves over the central United States Friday, delivering extreme weather to millions through the weekend, including the chance of multiple strong tornadoes.

​ A cross-country storm will explode in strength as it moves over the central United States Friday, delivering extreme weather to millions through the weekend, including the chance of multiple strong tornadoes. Read More Breaking News, Latest News and Videos | CNN