The glide cycle continues throughout our region leaving large streaks of dirt and debris behind. Dozens of glides have released throughout Turnagain Pass and hundreds of large cracks continue to creep open and move. Without new snow to cover up old glides it is getting difficult to track new activity.
Two nights of below freezing temperatures have helped to temporarily stabilize the snow in places without glide cracks. It is important to understand that superficial freezing has added strength to the surface, but the snow below is still moist and poorly bonded. Glides can release even with superficial cooling, as observed yesterday on Seattle Ridge. See photo below.
The entire East face of Seattle Ridge is covered with cracks including the most of Repeat Offender, which has seen accelerated activity this week. The area near the ‘uptrack’ is getting more cramped, and navigating through the mid-elevation band is getting more and more complex. As long as glide cracks continue to release we will continue to stress the importance of avoiding this hazard!
A lot of recent glide activity on Center Ridge and Tincan Ridge and many glides that haven’t yet released.
Below freezing temperatures have formed a firm surface crust in the mid and upper elevations. This crust has added strength to the snowpack following unusually warm weather last week. The good news is that the avalanche hazard is low in the upper elevations, the bad news is it come with a different hazard to manage. Slide for life conditions do exist in steep terrain where it will be unlikely to trigger and avalanche, but easy to lose an edge. It is still necessary to consider the consequences of taking a fall in the terrain you are both ascending and descending.
*Cornices remain extremely large and perched along many ridgelines. These features deserve extra space and can break farther back than expected. Triggering a cornice will become more likely later in the day with warming temperatures. Trigger a cornice above steep terrain could mean going for a long ride.
Two people on Tincan Ridge above a large cornice. These features are very difficult to judge and this is a great example of how important it is to space out and only expose one person at a time. Photo by Ryan Lewthwaite.
Very firm surface conditions can make skining conditions difficult right now.
Yesterday skies were mostly sunny and winds were light from the East. In the mid elevation zone evening temperatures dipped below freezing and daytime temps reached the low 40F’s. No precipitation was recorded in the last 24hours. Overnight temperatures reached the mid 20’s F.
This morning skies will be mostly clear and become cloudy in the afternoon with rain showers beginning early evening. Temperatures will start to increase throughout the day and rain/snow will be around 1500′. Ridgetop Winds from the East are also expected to build throughout the day becoming Moderate (20-30 mph) by late afternoon.
This evening a low-pressure system will move into our region bringing warm air and rain showers to Western Prince William Sound. Unseasonably warm temperatures, strong winds and heavy precipitation are expected to last several days.
|Temp Avg (F)||Snow (in)||Water (in)||Snow Depth (in)|
|Center Ridge (1880′)||32||0||0||124|
|Summit Lake (1400′)||33||1||0.1||41|
|Alyeska Mid (1700′)||32||0||0||103|
|Temp Avg (F)||Wind Dir||Wind Avg (mph)||Wind Gust (mph)|
|Seattle Ridge (2400′)||26||n/a||n/a||n/a|
|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.