Tornadoes may hit the Mississippi Valley on Friday, as well as blizzards in the northern Plains and gusty conditions in Texas that pose a high risk of wildfires.

Over 150 million Americans are bracing for severe weather as thunderstorms which threaten to produce hurricane-like winds and tornadoes roll across the midwest.

A multi-day severe weather outbreak is set to bring tornadoes, flash flooding and damaging winds from the Midwest to the South to the East Coast.