Wind slabs have been lingering...this past Saturday, skiers were kicking them off, and yesterday, we were able to kick a cornice and get some wind slab to pull out on a a North aspect leading into Hum Lake (see photo below)...we also noticed fresh natural wind slab crowns beneth the steep rocks above Hum Lake from the new snow about 10-12 inches deep. South-soutwest winds continued to load up Northern aspects...Be on the lookout for Windslbs and tender cornices On NW through East Aspects.
With all of the snow, and not much sun until today, we will likely see the snowpack adjust to solar radiation as the surface warms up, and loose, wet avalanche danger increases, especially on steep, rocky Southern aspects.
Remember your information can save lives. If you see anything we should know about, please participate in the creation of our own community avalanche advisory by submitting snow and avalanche conditions. It's okay if you leave some fields blank, just quickly fill out what you know. Or you can email us at firstname.lastname@example.org.
The Friends of the Payette Avalanche Center (FPAC) needs YOU! We are in desperate need of more user support and financial assistance. The avalanche forecast is not a guaranteed service, and is in jeopardy of dwindling down to only a couple of days a week in the near future. Please help if you can by clicking the DONATE tab above. If you value this life saving information, make a donation or help the FPAC in raising funds for the future.
Yesterday, we were able to kick a cornice and get some wind slab to pull out on a a North aspect leading into Hum Lake (see photo below)...we also noticed fresh natural wind slab crowns beneth the steep rocks above Hum Lake from the new snow about 10-12 inches deep.
We also noticed a temperature/rain crust buried about a foot down at the new snow interface, and got some hard CT25 results.
.SHORT TERM...Colder drier air has come in behind yesterday`s cold front but southward-moving upper low in Oregon will still support isolated snow showers in sern Oregon and swrn Idaho today. Latest satellite and radar imagery shows a few echoes in southern Malheur County. Northern areas have become quite cold with mostly clear skies, light winds, and deep snow cover. Through Friday the Oregon upper low will move south along 120W reaching southern California late Friday. Dry northwesterly flow aloft will come into our CWA. Temps will continue to lower, although patchy fog and stratus will limit radiational cooling at night. NAM has stratus throughout the Snake Basin Friday morning but is an outlier. Consensus suggests at least some fog/stratus, however. Light winds through Friday. .LONG TERM...Friday night through Thursday...An upper ridge and surface high pressure will remain over the area through early next week, resulting in below normal temperatures and the potential for valley fog and stratus. Another moist Pacific Storm will reach the the northwest coast late on Tuesday for widespread precipitation through Thursday. There are some differences in the onset of this event but all model projections show significant precipitation across the forecast area mid week. Mountains will see snow but the valleys look to see mostly rain with temperatures around normal by Wednesday.
This avalanche advisory is provided through a partnership between the Payette National Forest and the Friends of 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.