The most common snowpack problem continues to be a weak layer of facets on top of the hard melt/freeze crust from January. We can’t find the facets everywhere, but they are common at and above treeline. All the February snow (51 inches of storm accumulation at Turnagain Pass) now sits on this weak layer. Snow pit tests are showing moderate to hard force required to collapse the facet layer. In many places that failure will propagate across an extended column (this video shows an example from last weekend).
Last weekend we had many avalanches reported on this weak layer. Check the observations page for photos and descriptions of those slides.
People are starting to explore farther back into the mountains. Steeper slopes are getting tested, which has resulted in the two known human triggered avalanches in the last 2 days. Avoiding or minimizing exposure to steep terrain is the safest bet with the current problem. We still have plenty of untracked snow on slopes less than 35 degrees. If you do find yourself in the steeps, careful terrain management by exposing only one person at a time and avoiding terrain traps will be essential.
It hasn’t snowed in several days now, since the 18th. Wind has also stayed minimal since that last snowfall.
Today’s expected weather is mostly cloudy with a chance of snow (less than 1 inch). Wind may pick up, 20-35mph from the Southeast and increase more tonight.
Sunny weather is forecasted for Sunday and Monday. Overall we are staying in a calm weather pattern. Check the weather page for more detailed information.
|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: firstname.lastname@example.org
|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.