Above 2,500ft Considerable
1,500 to 2,500ft Considerable
Below 1,500ft Low
Degrees of Avalanche Danger ?
Problem #1: Wet Avalanches
Location: Steep E-S-W aspects below 5,000ft. Temperatures continue to rise, with daytime freezing levels rising up to 4,500ft (even higher if the sun comes out). Melting and softening will increase the danger of human-triggered wet slabs and large, dangerous wet sluffs. We’ve have been getting only shallow overnight freezes below 4,500ft, which increases the likelihood of wet slides during the day. Restrict travel on these aspects to the early-morning hours when the snow is still frozen. If the snow softens to ankle-deep or more, it’s time to get off those steep sunny slopes. Keep an eye on our weather stations, watch the temperature trends, and plan accordingly.
Problem #2: Wind Slab
Location: Wind loaded E-S-W aspects, above 5,000ft. North winds last week formed recent wind slabs up to 8″ thick on slopes that are lee to the north wind. Keep an eye out for wind loaded slopes where these recent surface slabs may be thick enough to sweep a person down into high-consequence terrain.
Recent Avalanche Activity
Isolated natural wet-loose avalanches occurred this weekend in afternoon hours on steep, rocky South and Southwest aspects. These slides were mostly size 1-2.
Temperatures are pretty steady this week, with the freezing level around 3000ft at night, rising to 4500ft during the day. Clouds and light rain/snow will continue Tuesday-Wednesday, with nicer weather returning Thursday.
|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
|56″||0″ / 0.05||0″ / 0.05||4,500||light, N||0″/ 0.20 *|
Flower Mountain @ treeline
|42″||0″ / 0.00||0″ / 0.00||4,500||light, NW||0″/ 0.10*|
Chilkat Pass @ 3,500ft
|20″*||0″ / 0.00 *||0″ / 0.00*||4,000||light, NW||0″/ 0.00 *|
( *star means meteorological estimate )
Additional Info & Media
If you get out on the snow, send in your observations!