A pair of potent storm systems known as atmospheric rivers are spreading rounds of rain and snow across the Pacific Northwest and Northern California over the next several days. The first storm is already pounding the region.

A large storm over the central U.S. is bringing a range of weather issues, from flooding rain and severe weather to heavy snow in the Rockies.

An expansive storm system is swirling through the central United States and unleashing a kitchen sink of weather woes — tornadoes and flooding are possible in Texas and Oklahoma, with heavy snow that could accumulate up to 4 feed in spots across Colorado and New Mexico.