Cornices remain large and mature, and we continue to find new collapsed cornices with impressive paths of destruction below.
Here is an account of the fatal cornice failure that happened in Haines earlier this year. Good reading, photos, and reminders of the dangers we face in the mountains.
We hit the highest wind speeds overnight that we’ve seen in the last week. Even before that wind we could find small natural and skier triggered pockets of wind slab in steep terrain above treeline. Expect pockets of wind loaded stiffer snow today that could fail with a slabby character.
The picture below is a great example of our current sluffing problem. Small point releases can entrain impressive amounts of loose snow in steep terrain.
The only notable weather in the last 24 hours was the wind last night. Seattle ridge weather station recorded sustained wind to 28mph and gusts to 46mph from the northwest. This is more than enough to create fresh wind slab.
Colder temperatures are keeping melting and wet snow avalanches from becoming a problem. The cold weather has also caused large temperature gradients in the surface snow which keeps that snow soft and carveable. Read Wendy’s description of the process here.
Today, clear and cold weather continues. Expect temperatures to reach into the 20s this afternoon. Wind will be north to northwest from 14-33mph at the ridgetops.
The longterm outlook shows an end to our sunny weather coming on Thursday night. When that happens we can expect snow, warmer temperatures, and an increase in the avalanche danger.
Kevin will issue the next advisory tomorrow morning, March 21st.
|05/22/23||Turnagain||Avalanche: Tincan||Nick D'Alessio|
|05/12/23||Turnagain||Avalanche: Tincan, Sunburst, Magnum, Cornbiscuit||Heather Thamm|
|05/07/23||Turnagain||Observation: Tincan – Bear Tracks||CNFAIC Staff|
|05/05/23||Turnagain||Observation: Seattle Ridge||AS/ WW Forecaster|
|05/02/23||Turnagain||Observation: Cornbiscuit||Schauer/ Sturgess Forecaster|
|05/02/23||Turnagain||Observation: Seward Hwy Turnagain Pass||Joel Curtis|
|04/30/23||Turnagain||Observation: Magnum||Ayla, Kit Crosby, Barton|
|04/29/23||Turnagain||Observation: Tincan||John Sykes|
|04/28/23||Turnagain||Avalanche: Taylor Pass/Pastoral||Schauer/ Creighton Forecaster|
|04/28/23||Turnagain||Avalanche: Tincan||Andy Moderow|
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.