The new snow combined with winds out of the South-Southwest has formed wind slabs in higher elevation E through NW facing terrain. Expect to see crossloading in gullies or other concavities on East and West facing slopes.Winds ramped up last night so yesterday's isolated slabs will be more widespread and gaining depth. Winds will be shifting to the West and Northwest this afternoon so expect to see additional wind slab formation on multiple aspects by tomorrow.
In the mid to upper evelvations the snow from the last 48 hours could be triggered within the new snow layers or down to the stout rain crust. With 12-20 inches of new snow over the last few days it will be possible to find storm slabs on steeper, wind protected terrain. Additional heavy snowfall and increasing temperatures this morning will add to the problem.
Mountains will see additional snowfall of up to 13 inches today with heavy snow at times. Temps will increase slightly this morning and through the day then fall as a cold front enters our area this afternoon. Winds are the wild card today, throughout the advisory area upper elevations may see gusts in excess of 40 mph today. Cooler temperatures are in store for tomorrow with wind chills making it feel even colder.
Snow. High near 29. Breezy, with a south southwest wind 15 to 24 mph becoming west northwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible in the upper elevations.
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.