Above 2,500ft Considerable
1,500 to 2,500ft Considerable
Below 1,500ft Low
Degrees of Avalanche Danger ?
Human triggered avalanches will be likely today, with natural avalanches possible in wind loaded terrain.
Problem #1: Storm Snow
Location: All aspects 30 degrees and steeper, above 2,000ft. 7-16″ of new snow fell Sunday night, with strong south winds. Moderate snowfall rates will continue today. Expect tender fresh wind slabs within the new storm snow. The new/old snow interface (30-60cm deep) is crusty/icy on sun-exposed aspects, and facetted/weak on shady north aspects. Bonding of the new snow to this old surface is fair, and slowly improving. Still, recent soft slabs (up to 70cm thick in wind-loaded areas) may propagate across slopes given the slick/crusty surface underneath. Look for signs of wind loading (drifts, rounded wind pillows, cornices, etc), and avoid these areas. If you sense hollow, slabby, or cohesive surface snow it would be a good idea to find safer, less wind-affected terrain to ride. Hand shears, small test slopes, and cautious ski cuts will be good ways to evaluate and manage this danger in the field.
Recent Avalanche Activity
Isolated natural wet-loose avalanches have been occurring over the last week, in the afternoon hours on steep, rocky South through West aspects. These slides have been mostly size 1-2 so far.
7-16″ of wet snow fell above 2,000ft Last night (highest amounts in the Lutak Zone and lowest at the Pass). South winds were moderate-strong. Rain/snow will continue Monday, with an additional .50″ of precipitation likely.
|Snow Depth [in]||Last 24-hr Snow/SWE [in]||Last 3-days Snow/SWE [in]||Today’s Freezing Level [ft]||Today’s Winds||Next 24-hr Snow/SWE|
Mount Ripinsky @ treeline
|76″||16″ / 1.40||16″ / 1.40||2,500||mod, S||6″/ 0.50 *|
Flower Mountain @ treeline
|49″||7″ / 0.80||7″ / 0.80||2,500||mod, SE||4″/ 0.40 *|
Chilkat Pass @ 3,500ft
|27″*||7″ / 0.80 *||7″ / 0.80 *||2,000||mod, SE||4″/ 0.40 *|
( *star means meteorological estimate )
Additional Info & Media
If you get out on the snow, send in your observations!