Another powerful storm system is expected to sweep across a wide swath of the United States, bringing heavy rain to Southern California, heavy snow to parts of the West and Midwest and more snow and freezing rain to the Northeast and New England.

In the Northeast, sleet and freezing rain may occur, affecting driving conditions and possibly creating power outages.

The National Weather Service issued a winter storm warning at 2:34 a.m. on Saturday valid from 4 p.m. until Monday 4 p.m. for Northern Blue Mountains of Oregon.