Forecasters say a colossal storm could bring heavy winds, flooding, blizzard conditions and tornadoes to some parts of the country.

More than 100 million people in the U.S. will be in the path of an intense March storm starting Friday as the sprawling multi-day system threatens fires, blizzards, tornadoes, and flooding as it tracks eastward across the Great Plains.

Forecasters said tornadoes, damaging winds and hail up to baseball-size were likely, with the greatest risk in eastern Missouri, much of Illinois and portions of Iowa, Kentucky, T