According to the National Weather Service, the “inland intrusion of an atmospheric river” is making landfall in parts of California and Oregon, expected to impact upcoming weather in Colorado’s mountains and high-altitude areas of the western slope. Starting late Thursday and continuing through Sunday morning, up to two feet of snow could fall in the northern and central mountains. Snowfall is currently forecasted to hit later in the San Juans, likely dropping flakes in the 12 to 18 inch range in this region.