The glide avalanche cycle continues with new activity occurring on a daily basis. Fresh piles of dirty debris were observed yesterday on the Seattle Ridge uptrack and on Pete’s South. Earlier this week glides released on the West face of Magnum and Cornbiscuit, and new cracks have formed on Sunburst. Below 3000’ it is very important to identify terrain with existing cracks and avoid travel in the runout of glides.
*The fact that we have been experience multiple nights without freezing temperatures in the 1000’-2500’ is also concerning. With heavy rain in the forecast for tomorrow, the frequency of glide activity may increase in the coming days.
Even though motorized use has closed in Turnagain Pass, traveling on foot is not recomended on Seattle Ridge due to the threat of numerous glide cracks that continue to release.
A large crack observed on Thursday released yesterday above an old glide avalanche on Pete’s South.
Last night was the second evening in a row temperatures remained above freezing at Seattle Ridge Weather Station (2400’.) With another warm day forecasted today the possibility of triggering wet loose activity is moving further into the Alpine. Light rain and periods of sun should be anticipated, both adding more water to the snow.
As you move into the upper elevations, stability will improve with the presence of a supportable surface. Remember to avoid steep terrain if the snow becomes unsupportable and your skis or board are sinking into punchy wet snow. This is an obvious sign the snow is loosing its strength. If for some reason the sun makes a stronger appearance than forecasted, natural wet avalanches will be possible in the Alpine.
In the Alpine cornices remain large and very warm daytime temperatures will be adding additional stress. Give them extra space and remember they have a tendency to break much further back than expected.
Higher in the Alpine, above 3500’ where the snow is drier, shallow wind slabs are a possibility on leeward and cross loaded slopes. Ease into to steeper terrain with a cautious mindset.
Yesterday light rain and overcast skies were observed throughout Turnagain Pass, with a total of 0.2 € of rain at Center Ridge Weather station (1880′.) Daytime temperatures averaged in the mid 40Fs overnight temperatures hovered just above freezing at Seattle Ridge Weather Station. Easterly Ridgetop winds were, 10-25mph.
Scattered rain showers are expected throughout the day with mostly cloudy skis, but periods of sun are always possible. Rain/snow line will be around 2100′ with an addition 0.1 € of (snow water equivalent) expected today. Ridgetop winds, averaging 5-15mph, but will be building by this evening. Daytime high temperatures for 1000′ are expected to be around 48F and overnight lows in the mid 30F’s.
Monday through Tuesday a warm front is expected to move through Southcentral Alaska. Periods of heavy rain and strong winds are expected. Rain/snow line could be as high as 3000′.
|Temp Avg (F)||Snow (in)||Water (in)||Snow Depth (in)|
|Center Ridge (1880′)||42||rain||0.2||105|
|Summit Lake (1400′)||42||0||0||18|
|Alyeska Mid (1700′)||38||rain||0.09||89|
|Temp Avg (F)||Wind Dir||Wind Avg (mph)||Wind Gust (mph)|
|Seattle Ridge (2400′)||35||SE||14||40|
|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.