A noticeable change to the weather will be arriving to eastern Utah and western Colorado over the next 24 to 48 hours. A Pacific storm system will be sweeping eastward beginning tonight and arrive to the Great Plains by Monday morning. Showers will be possible over the higher terrain of northern Utah and western Colorado by sunrise tomorrow. The record high temperatures of Saturday will move by the Wayside as highs cool some 5 to 10 degrees under the cloud cover on Sunday. The period of focus for the passing storm system will be Sunday evening into the early morning hours on Monday as the cold front passes through. Snow showers will become more widespread over the northern and central Colorado high country as colder air filters in. Snow amounts will generally be in the 1-3 inch range above 9000 feet with some impact to Rabbit Ears and Vail passes possible. As the storm winds down on Monday cold air will be filtering into the region. Clear skies by Monday evening will bring favorable conditions for widespread freezing conditions to the lower valleys of western Colorado and northeast Utah.