The poor structure of the snowpack is the culprit behind the collapsing that’s keeping us worried. The most reactive layers we’ve been seeing are the facets above the early December “drizzle” crust (see pit profile here). This layer is showing a tendency to propagate in some pit tests, and we believe it is the big player in most of the recent natural and skier triggered avalanches.
There remains some evidence of wind slab avalanche activity from the wind storm on Monday. On Thursday we found numerous mid slope crown lines near Crow Pass from avalanches that presumably happened during that wind event. We can expect some areas to be holding stiff wind slab that didn’t slide spontaneously, but may be triggered by a person hitting a trigger point.
Weather has been consistently benign since Monday with cold, clear, and calm conditions. Temperatures are a little warmer at the ridgetops today, so don’t let cold Anchorage temperatures keep you at home today.
Look for increasing clouds today, and snowfall is expected to commence tonight in Eastern Turnagain Arm. Up to 4-8 inches of snow is in the forecast for tonight!
The storm will be short lived as the front sweeps across southcentral Alaska, with snow tapering Saturday morning and ending.
|04/19/21||Turnagain||Avalanche: Triangle, Seattle creek||Will Morrison|
|04/18/21||Turnagain||Avalanche: Turnagain Pass Road Obs||Andy Moderow|
|04/18/21||Turnagain||Observation: Seattle Ridge, approximately 300 yards south of the up track||Brent Byrne|
|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|
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.