The snow depth is measured by the Colorado Avalanche Information Center observation center off the Sunset trail, accessed from the Skyway trailhead on Grand Mesa. The forecast by the National Weather Service is for the area about 600 feet lower than Skyway, thus, if it's snowing, add a few inches of snow and subtract a few degrees in temperature to get a more accurate picture of the weather at Skyway, Mesa Top or County Line trailheads.