Wind slabs will be found at all elevations including in the burnt forest, and may propagate farther then expected due to underlying facet layer. This is especially true at and below treeline where the facets are sitting on a hard melt freeze crust.
Expect to find reactive storm slabs in sheltered areas. These could be especially touchy in lower elevation areas where they are sitting on facets above a melt freeze crust.
Deep persistent slabs are best managed by:
Cornices are best managed by:
Sunday night through Monday will bring blizzard conditions with strong to extreme westerly winds and anywhere from 20-40cm of new snow. Models vary on freeing levels which could peak anywhere from 1400 to 1800m Monday night. Tuesday and Wednesday will see progressively cooler conditions and clearing skies with wind continuing out of the west.
Extreme southwest through westerly winds continue to build wind slabs over a weak facet layer on top of older facetted snow. In lower elevations, this sits on a hard crust increasing the potential for wide propagations. Midpack is made up of facets and decomposing crusts of varying resistance. Thin snowpack areas are very facetted.
A natural Size 2 avalanche with a 40cm crown was seen on a crossloaded west aspect well below ridgetop at 1900m triggered by extreme winds on Sunday. It likely failed on a layer of facets. Visibility was poor, but forecasters suspect several other similar failures in the forecast region.