More than 18 million people are under winter weather alerts across the West and Midwest as storms are forecast to bring heavy snows and bitter winds.

Snow, high winds and below-average temperatures are sweeping from the Rockies to the Midwest, while an atmospheric river threatens flooding in the Pacific Northwest.

A series of clipper systems will bring rounds of snowfall for parts of the Midwest this week. The first storm will move through the area through Sunday with the second one beginning to impact the region Monday into Tuesday.

Another weekend winter storm is taking aim at the Midwest which means we'll be needing to prepare the snowblowers for more plowable snow.

The Thanksgiving weekend storm system has brought over a foot of snow and strong winds to parts of the Midwest and thunderstorms across the South.

A winter storm has the potential to dump heavy rain and several inches of snow across more than 1,000 miles of the country this weekend.

A winter storm is hitting the Midwest with snow and wintry conditions, causing travel issues for many who were looking to get home following Thanksgiving. At least 450 flights had been canceled around the United States as of 7 a.m. ET, with the biggest impacts at Chicago's O’Hare Airport, according to FlightAware, a flight-data tracker.

A major winter storm blasted parts of the Midwest and the Central US this weekend with heavy snowfall, causing travel nightmares for millions of people as they return home from Thanksgiving plans.

A G3 geomagnetic storm Tuesday may push northern lights into Oregon and the Midwest, with minor satellite and GPS disruptions possible from a solar coronal mass ejection.