Cross-country storm to deliver another wintry blow to central US

A storm already triggering much-needed rain and mountain snow over extremely parched parts of the Southwest will move along a 2,500-mile-long stretch of the United States and Canada. And while it isn’t expected to become a powerhouse storm, the system will have far-reaching effects across the Rockies, portions of the Plains, Midwest and eastern Canada, as it unleashes accumulating snow and causes difficult travel along its long track. The…