An El Nino pattern (what currently exists) shifts things around across the Pacific in such a way that storms come directly into California. These systems can be cold-blooded or warm-blooded, depending on what's happening across the rest of North America.

This winter, we've had the southern El Nino storm track plus an abundant supply of cold from the Arctic. The end result has been three monster snowstorms for the mid-Atlantic region.

And here comes another, though this one probably won't be as bad as the recent snowstorms.

The storm of concern will spread snow through the central Rockies Saturday, then the bad weather will expand across the Great Plains Sunday. Several inches of snow and hazardous travel conditions can be expected this weekend from Wyoming to MIssouri.

The snowstorm will shift to the Ohio Valley and Northeast Sunday night and Monday, where it will cause more travel delays and another plague of cancellations.

Story by AccuWeather.com Senior Meteorologist John Kocet.