With 7 inches over the last 48 hours in the high country be mindful of storm slabs above 7,000 feet. This new snow is sitting on a melt freeze crust from last weeks warm up, this is making for a easy sliding bed surface for the new snow.
Solar aspects will have the possibility of producing natural avalanches, mainly point releases, as the sun pokes through the mostly cloudy skies today, and stresses a warm snow pack. Temperatures hoverd above freezing last night in the upper elevations, around 35 degrees, and we should see a high temperature of 40 degrees in the upper elevations.
Triggering a slab due to this weak layer has become more difficult over the last few days with the heat, but I would not let my guard down, We are still finding this weak layer in upper elevation wind protected terrain. Pit results and stability testing are pointing toward less likelihood of triggering, but if triggered we are still talking about a potentially unsurvivable hard slab avalanche. Take the time to carefully assess terrain choices on the north half of the compass today. Especially areas where the snow cover is thinner which allows the buried surface hoar to be closer to the surface, and in turn more reactive---especially for snowmachines. This is the same layer that was the cause of the fatal avalanche on January 31st. A persistent weak layer such as this is a low probablility, but HIGH CONSEQUENCE scenario.
For McCall this morning we should see some patchy dense fog before 11am. Otherwise, mostly cloudy through the day with a high near 42. Light south wind.
Up in the high country around 7600 feet on Granite Mtn, we should see A 30 percent chance of snow showers, mainly before 11am. Cloudy, with a high near 40 degrees. Southwest wind around 15 mph. New snow accumulation of less than a half inch possible. Wednesday looks to be quite windy: 49 MPH SW winds....be ready for power outages?
This avalanche advisory is provided through a partnership between the Payette National Forest and the Payette Avalanche Center. This advisory covers the West Central Mountains between Hard Butte on the north and Council Mountain on the south. This advisory applies only to backcountry areas outside established ski area boundaries. This advisory describes general avalanche conditions and local variations always occur. This advisory expires at midnight on the posted day unless otherwise noted. The information in this advisory is provided by the USDA Forest Service who is solely responsible for its content.