No avalanche activity was seen or reported yesterday. The last known avalanche in our forecast zone was a natural 1-2′ slab Thursday on Raggedtop near Girdwood.
|Signal Word||Size (D scale)||Simple Descriptor|
|Small||1||Unlikely to bury a person|
|Large||2||Can bury a person|
|Very Large||3||Can destroy a house|
|Historic||4 & 5||Can destroy part or all of a village|
Although a potent weather system is entering central Alaska from the Bering today, we will be far enough to the south that it looks to just brush us by. Only a trace to 1″ of snow is expected by sunset (8:49pm!) with a chance for 2-4″ tomorrow. The mountains north of Girdwood may see larger amounts this evening through tomorrow (6-12″). Ridgetop winds will be on a slow rise from the south today and may hit averages near 20mph by 6pm and continue rising into tomorrow with averages near 30mph.
Until we receive enough snow/wind to create a new avalanche issue, we remain concerned with old buried weak layers in the top 3′ of the snowpack. These continue to show enough signs of instability that we can’t forget about them. Hence, there is still a chance a person could trigger a persistent slab avalanche. Here are some things to keep in mind:
Wind Slabs: With a bump in winds later today, watch for any snow that might get blown into small shallow wind slabs in the high terrain. With the winds from the south and surface crusts on south aspects, it might be difficult for the wind to pick up much snow. However, terrain channeling can cause winds to shift directions and so be sure to watch for any active loading.
Sluffs: As always, watch your sluff on steep slopes with soft surface snow (shaded aspects today).
Tincan seen from Seattle Ridge yesterday. It’s a bit difficult to see, but there are many recent tracks in the shade while the sunny slopes sport mostly older tracks. It’s that time of year that we are all playing the aspect. 4.2.21.
Snow pit on the east face of Seattle Ridge, just north of Repeat Offender slide path. Pit shows a thin weak layer of buried surface hoar and facets 16″ down that took a lot of force to fail, but when it did it propagated. This means the layer is difficult to trigger but could produce an avalanche if it failed. 4.2.21.
|Temp Avg (F)||Snow (in)||Water (in)||Snow Depth (in)|
|Center Ridge (1880')||24||0||0||110|
|Summit Lake (1400')||20||0||0||49|
|Alyeska Mid (1700')||24||0||0||116|
|Temp Avg (F)||Wind Dir||Wind Avg (mph)||Wind Gust (mph)|
|Seattle Ridge (2400')||21||W>N||2||5|
|05/18/21||Turnagain||Observation: Tincan Ridge||Joe Kurtak|
|04/30/21||Turnagain||Observation: Sunburst||W Wagner Forecaster|
|04/27/21||Turnagain||Observation: Tincan Ridge||Joe Kurtak|
|04/26/21||Turnagain||Observation: Magnum||Creighton/ Hoople|
|04/25/21||Turnagain||Observation: Sunburst||Nick D'Alessio|
|04/24/21||Turnagain||Observation: Airplane obs||Johnston-Bloom / DiJulia /Hilliard Forecaster|
|04/24/21||Turnagain||Observation: Corn biscuit||Heather Johnson|
|04/23/21||Turnagain||Avalanche: Lynx Ck Drainage||W Wagner Forecaster|
|04/23/21||Turnagain||Avalanche: Sunburst||Eeva Latosuo|
|04/23/21||Turnagain||Observation: Center Ridge Turnagain pass||Joe Kurtak|
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: email@example.com
|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.