While there remains some differences regarding the track, a rather potent Winter Storm appears to be taking shape for the Southern Rockies/Southern Plains Sunday-Tuesday (December 18-20). Some totals of 4 inch+ snowfall totals may be expected from as the cold core 5H low tracks across Northern Mexico and on E along the Red River Valley. Areas under the trowal may well see higher totals as the slow moving system treks ENE. There still remains some questions as to where the system will eventually