* WHAT...Snow. Additional snow accumulations between 1 and 3 inches, except 3 to 6 inches above 10,000 feet with locally higher amounts on the Brazos Ridge in the Tusas Mountains. West wind gusting as high as 50 mph above 9,500 feet. * WHERE...Northern and Southern Sangre de Cristo Mountains, and Tusas Mountains Including Chama. * WHEN...Until 6 AM MST Sunday. * IMPACTS...Travel could be very difficult, especially on Highway 64 near the Brazos Summit, NM-38 over Bobcat Pass, and NM-518 near Holman Hill. Periods of blowing snow will drop the visibility below a half mile at times over mountain passes. Tire traction will be reduced. Extend the distance between your vehicle and the vehicle in front of you. * ADDITIONAL DETAILS...The weight of heavy wet snow may down some tree limbs.