A dynamic storm system threatening to spawn powerful tornadoes and hail as big as baseballs has earned a relatively rare designation from forecasters

A dangerous combination of atmospheric ingredients will develop Saturday leading to an outbreak of severe thunderstorms.

A multi-day tornado threat is unfolding across several U.S. states, with severe storms capable of producing damaging winds, large hail, and tornadoes. Meteorologist Rhythm Reet from The Weather Network breaks down the details.