Glide cracks continue to threaten large areas of terrain throughout Turnagain Pass, Girdwood, and Summit Lake. There were several new glide avalanches seen yesterday from the Seward Hwy, and a large glide released on the East face of Seattle Ridge a few days ago. Glide cracks are on all aspects within the mid-elevation band (1000′-2500′), and some areas like the SW face of Cornbiscuit and Tincan are covered. This avalanche problem is impossible to predict and is not associated with human triggers. We have been talking about the glide avalanche problem for over two months in the advisory and as long as glide cracks continue to open up, move and release, we will stress the importance of avoiding them.
Yesterday a glide on the Southwest aspect of Orca released mid day. Click HERE is see more photos of glides that released in the last 2 days.
Glides cracks on the SW face of Cornbiscuit as seen yesterday. Photo by Liz Rapetto. Click HERE for an observation that shows a portion of a glide (out of view) that partially released on Cornbiscuit.
In the alpine be on the lookout for a variety of surface snow instabilities and changing conditions later in the day.
Wind Slabs: Today as ridgetop winds start to increase by late afternoon be aware of newly forming wind slabs in steep terrain. Should you see blowing snow or shooting cracks consider altering your plans. This is the kind of hazard that might catch you off guard in the afternoon as conditions change.
Loose snow: On shaded aspects dry loose snow sluffing will warrant management in steep terrain. Sluffs have been fast moving with the ability to entrain a significant amount of surface snow in big terrain. On solar aspects pay attention to how the sun is warming the surface snow. Triggering a wet loose avalanche may be possible if the sun is packing some heat today.
Cornice falls: Very large cornice features can be found along most ridgetops throughout Turnagain Pass. Cornices have a tendency to break further back than expected. Give them lots of space, and limit time under them. Should you get too close, a snowmachine or person could tip the balance.
Yesterday skies were sunny and ridgetop winds were calm. Daytime high temps reached the low 40’s F and overnight temps dipped down into the mid 20’s F. Ridgetop winds have increases slightly overnight from the East, averaging 10mph.
Today skies are expected to be mostly sunny becoming cloudy with scattered snow showers by early evening. Easterly ridgetop winds will continue to increase throughout the day and are expected to reach 15-30mph by early evening. Daytime temperatures will be in the 30’s F and may reach the low 40’s at lower elevations.
A weak low will move through the area Tonight through Friday bringing scattered showers with up to a few inches of new snow. Winds will be moderate from the East and temperatures will continue to be warm, upper 20’s -30’s F.
|Temp Avg (F)||Snow (in)||Water (in)||Snow Depth (in)|
|Center Ridge (1880′)||32||0||0||133|
|Summit Lake (1400′)||29||0||0||43|
|Alyeska Mid (1700′)||33||0||0||106|
|Temp Avg (F)||Wind Dir||Wind Avg (mph)||Wind Gust (mph)|
|Seattle Ridge (2400′)||29||SE||5||19|
|05/06/20||Turnagain||Avalanche: Pastoral Peak, north face||Andy Duenow|
|04/10/20||Turnagain||Avalanche: Wolverine||Mike Records|
|04/10/20||Turnagain||Observation: Eddies lookers right shoulder||Matt Yoder|
|04/09/20||Turnagain||Observation: Bench Peak||Mike Records|
|04/04/20||Turnagain||Observation: Pete’s North||Anonymous|
|03/26/20||Turnagain||Avalanche: Tincan – Proper (SW facing)||CNFAIC Staff|
|03/26/20||Turnagain||Avalanche: Seattle Ridge||W Wagner Forecaster|
|03/25/20||Turnagain||Avalanche: Sunburst Uptrack @ 2000′||J. Boisvert|
|03/24/20||Turnagain||Observation: 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: 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.