Glide avalanches remain our primary concern in the Turnagain Pass and surrounding regions. Although the snowpack is stable itself, how it is sticking to the sides of the mountins is another thing. On all aspects at elevations below 3,000′ the snowpack, as a whole, continues to ooze down the slopes and create cracks (despite having a hard crust on the surface). Every now and again one of these cracks will release into a full-depth avalanche. There is no way to predict when a crack is going to release. What we do know is the frequency of glide avalanches is on the rise. Since Friday (4/1) five large glide avalanches occurred on Seattle Ridge and several others between Girdwood and Summit Lake. Read the reports from over the weekend HERE.
The reason this is so alarming is that new glide cracks are appearing daily and many threaten popular terrain. The Seattle Ridge uptrack is one of our biggest concerns because a large crack now puts this popular route in the line of fire. If you were to be in the wrong place at the wrong time you would not survive a glide avalanche. High marking or setting a skin track under a glide crack is not recommended!
Heather showed the photos below yesterday but they are too good not to post again today as today’s concerns are the same. Please ‘thread the needle’ carefully as you move through these mid-elevations.
Other than the scary glide avalanche issue we have a normal caution in the backcountry. The snowpack is stable and sports a solid crust on the surface. Sunshine yesterday softened the surface enough for bone fide springtime corn skiing by the afternoon. On slopes the sun is not warming, there is ‘slide for life’ potential as the surface crust is very slippery. For today, high clouds may limit surface warming – but then again, the sun has a way of poking out in places.
Cornices? We are still waiting for the Alpine to warm up enough to start seeing natural cornice falls. These giant features are still holding on and looming.
Sunny skies and warm temperatures greeted many backcountry travelers yesterday. Ridgetop winds were light from the East and downright calm on some ridgelines. Temperatures reached the mid 40’s F in the parking lots and the upper 20’s F on the ridgetops.
For today we are expecting some high clouds fill in as a frontal band associated with a low pressure just South of the Aleutians heads our way. Winds are expected to increase to the 10-20mph range from the East on the ridgetops and a trace of snow is possible above 1,000′ with a chance for a raindrop or two below 1,000′.
Tonight into Tuesday we should see the low pressure system move through with light precipitation (rain/snow line ~1,000′) and accumulation in the 1-3″ range. Stay tuned.
|Temp Avg (F)||Snow (in)||Water (in)||Snow Depth (in)|
|Center Ridge (1880′)||34||0||0||118|
|Summit Lake (1400′)||32||0||0||37|
|Alyeska Mid (1700′)||34||0||0||104|
|Temp Avg (F)||Wind Dir||Wind Avg (mph)||Wind Gust (mph)|
|Seattle Ridge (2400′)||28||SE||8||24|
|01/19/21||Turnagain||Avalanche: Cornbiscuit||Schauer/ Johnston-Bloom Forecaster|
|01/19/21||Turnagain||Avalanche: Sunburst and Tincan||CNFAIC Staff|
|01/19/21||Turnagain||Avalanche: Seattle Ridge||CNFAIC Staff|
|01/19/21||Turnagain||Avalanche: Tincan 2900′ SW aspect below Hippy Bowl.||Kris Marshall|
|01/18/21||Turnagain||Observation: Turnagain Pass Road Obs.||A Schauer Forecaster|
|01/16/21||Turnagain||Avalanche: Tincan Trees||A Schauer Forecaster|
|01/15/21||Turnagain||Observation: Sunburst||Schauer/ Wunnicke Forecaster|
|01/13/21||Turnagain||Observation: Tincan||Johnston-Bloom / Moderow Forecaster|
|01/13/21||Turnagain||Observation: Center Ridge Meadows||Alaska Avalanche School Rec Level 1 Roberts|
|01/12/21||Turnagain||Avalanche: Seattle Ridge/Center Ridge||A Schauer 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.