Massive Winter Storm Threatens 30 States with Snow, Rain and High Winds

Over the next few days, a formidable winter storm is poised to unleash snow, heavy rain, and powerful winds across much of the central and eastern United States. Spanning more than 2 million square miles, the expansive system will disrupt travel and daily life for tens of millions starting Monday.

As the storm gathers strength Sunday night into Monday, it will tap ample moisture from the Gulf of Mexico and collide with cold Arctic air, creating prime conditions for a major wintry onslaught. Meteorologists have tracked this system for over a week as computer models highlighted its potential severity.

The most significant impacts will occur from Monday through Tuesday as the storm traverses from the southern Plains through the Midwest and into the Great Lakes region.

Snowfall accumulations of 3 to 12 inches are expected along a nearly 1,500-mile swath from the Southwest mountains into the upper Midwest. Major interstates, including 25, 40, 70, 80, 35, 29, 55 and 94, will become treacherous to travel with snow, slush and blowing snow.

Additionally, the storm will unleash drenching rains and thunderstorms further east into the Tennessee and Ohio Valleys. Embedded severe thunderstorms capable of tornadoes will be possible, especially across the lower Mississippi Valley.