We were able to eek out a few solid days of blue-sky powder skiing (on northerly aspects) before the grey-bird conditions set in yesterday bringing with it moderate winds from the SE. Winds yesterday began to build shallow wind slabs in the upper elevations where about 6” of loose, unconsolidated snow was available for transport on north aspects.
Loose, unconsolidated snow on a north aspect yesterday will feed building wind slabs today.
SE winds in the 40-55 mph range and 1-5” of new snow forecasted for today will conspire to manufacture tender wind slabs across the advisory area. Expect bonding to be a mixed bag from ‘stuck-on-like-glue’ to ‘hair-trigger’ given the huge variety of surface conditions that this storm is coming in on. Any moving snow today should be fairly shallow, relegated to the upper-most layer of new wind deposited snow and likely less of a concern for snowmachiners. For skiers, quick hand pits and test slopes today should aid in your decision-making process before committing to any big terrain.
A bit of fresh snow and substantial wind transport will conspire to push looming cornices ever closer to failure. Without ever really knowing when a cornice may fail it still holds true to simply avoid exposure to these ticking snow-bombs. This observation (and photo) sent in last spring serves as a good reminder that spring in the Chugach is cornice season!
Moderate winds and clouds yesterday dominated the weather across the forecast area with little to no precipitation during the daylight hours.
Grey skies and warmer air will persist as moderate SE winds ramp up throughout the day. We should see scattered and light precipitation in the form of light rain at sea level and 1-5 € of new snow above 1100′. Temps at 1000′ will be in the range of 31-40 degrees today. Freezing levels drop to around 700′ at night as moisture tapers off.
|04/18/21||Turnagain||Avalanche: Turnagain Pass Road Obs||Andy Moderow|
|04/17/21||Turnagain||Avalanche: Road obs||Johnston-Bloom / Moderow Forecaster|
|04/16/21||Turnagain||Avalanche: Seattle Ridge||Wendy Wagner Forecaster|
|04/16/21||Turnagain||Avalanche: Turnagain Pass, non-motorized side seen from Seattle Ridge||CNFAIC Staff Forecaster|
|04/16/21||Turnagain||Observation: Sunburst||Lance breeding|
|04/15/21||Turnagain||Observation: Tincan||Schauer/ Rothman Forecaster|
|04/13/21||Turnagain||Observation: Turnagain Pass Road Obs||A Schauer Forecaster|
|04/12/21||Turnagain||Observation: Tincan||Johnston-Bloom / Latosuo Forecaster|
|04/10/21||Turnagain||Observation: north sides||lance breeding|
|04/09/21||Turnagain||Observation: Girdwood to Turnagain Road Observations||W Wagner Forecaster|
Status of riding areas across the Chugach NF is managed by the Glacier and Seward Ranger Districts, not avalanche center staff. Riding area information is posted as a public service to our users and updated based on snow depth and snow density to prevent resource damage at trailhead locations. Riding area questions contact: email@example.com
|Area||Status||Weather & Riding Conditions|
This is a general backcountry avalanche advisory issued for Turnagain Arm with Turnagain Pass as the core advisory area. This advisory does not apply to highways, railroads or operating ski areas.