Wind slabs have been popping with skier influence over the last few days, but everything we’ve seen or heard about has been relatively small and manageable. The biggest concern is related to higher consequence terrain if someone decides to step it up and gets surprised. With limited snowfall over the last few days windslabs are 6-18 inches deep and are isolated to wind loaded aspects. Check the observations page for more recent examples.
Cornices are building and may be more unstable than usual due to high temperatures. Watch out when approaching the edge of a ridge, especially in flat light conditions.
The deep slab problem is a minor concern in most areas. Below 2500 feet it is unlikely to affect the deeply buried facets through 6 feet of hard slab and crusts. Above that, especially above 3000 feet, there is more concern for a couple reasons. The facets up high have not had enough warmth to promote significant bonding and increased strength. Snow depth is more variable, and shallow areas can be found where the weight of a person could affect those weak layers. The slopes also tend to be steeper at the upper elevations with more avalanche terrain to navigate.
Yesterday it was warm and raining up to near 2000 feet in Turnagain Pass. Precipitation intensity was low, but the liquid water on top of snow made for sticky skiing below treeline.
Today’s weather looks to be similar with small amounts of precip expected and continued warm temperatures. Rain is expected at sea level and may reach to above 1000 feet.
An east wind will blow moderate to strong at the ridges, with enough intensity to redistribute snow and create windslabs. Sunburst is reading wind gusts into the mid 40s already this morning.
Wendy will issue the next advisory Sunday morning, Feb 3rd.
|01/31/23||Turnagain||Observation: Johnson Pass area||Megan Guinn / W Wagner Forecaster|
|01/29/23||Turnagain||Observation: Tincan Backdoor||AAS-Level 1 1/27-1/30|
|01/28/23||Turnagain||Observation: Sunburst||Brooke Edwards|
|01/28/23||Turnagain||Avalanche: Seattle Ridge||W Wagner|
|01/28/23||Turnagain||Observation: Tincan Common||Tony Naciuk|
|01/27/23||Turnagain||Observation: Sunburst||John Sykes|
|01/27/23||Turnagain||Avalanche: Lynx Creek||Megan Guinn / W Wagner|
|01/25/23||Turnagain||Observation: Cornbiscuit||John Sykes Forecaster|
|01/22/23||Turnagain||Avalanche: Tincan||Schauer/ Guinn|
|01/21/23||Turnagain||Avalanche: Seattle Ridge||Elias Holt|
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.