Moderate winds overnight that will continue today, combined with 5″ of new snow are enough to create pockets of fresh wind slab. Slab thickness will vary from 6-12″. Be on the lookout for recently formed slabs on the leeward side of ridges. General wind direction will be out of the East but remember that wind direction in the mountains is influenced by terrain. Snow that feels stiff, looks rounded or pillowy and produces shooting cracks should be avoided in steep terrain today.
Natural and human triggered point release avalanches, also known as sluffs, will be possible on slopes over 40 degrees. Volume will be low to moderate but increase on sustained steep slopes and in the lower elevations. Sluffs will be dry above 2,000’ and gradually more damp with a decrease in elevation. Brief periods of sunshine will increase the likelihood of loose snow avalanche activity today.
Rollerballs and shallow wet loose avalanches observed on Magnum yesterday. More of the same can be expected in steep terrain today.
Cornices have grown significantly over the last week. Steer clear of cornices and always know where the cornice begins and the underlying terrain ends. Pick routes on the way up that minimize time spent beneath these features.
Over the past 24 hours temps have been mild. Snowfall and rain began overnight, with 5 €/.5 € of new (snow/H20) as of 6 am at the Center Ridge SNOTEL. The Girdwood Valley received 2 €/.2 €. Rain/snow line was around 500′. Ridgetop winds were out of the East averaging around 18 mph.
A broad area of low pressure to our South will spin and continue to pump light amounts of precipitation to the area today. Another 2-3 € of snow can be expected. Rain snow line will hover around the 1,800′ mark. Winds will be out of the East at 15-30 mph. Temperatures at 1,000′ will be in the mid 30s to low 40s F.
A continuation of unsettled weather will bring more of the same for the next several days. Warm Southerly flow associated with low pressure in the Gulf of Alaska will keep temps mild and precipitation coming in small doses.
|Temp Avg (F)||Snow (in)||Water (in)||Snow Depth (in)|
|Center Ridge (1880′)||31||5||.5||63|
|Summit Lake (1400′)||33||trace||.1||11|
|Alyeska Mid (1700′)||34||2||.2||32|
|Temp Avg (F)||Wind Dir||Wind Avg (mph)||Wind Gust (mph)|
|Seattle Ridge (2400′)||26||n/a||18||54|
|05/28/22||Turnagain||Avalanche: Turnagain Pass – late May wet slab cycle||CNFAIC Staff|
|05/21/22||Turnagain||Avalanche: Magnum, Lipps and Tincan||CNFAIC Staff|
|05/17/22||Turnagain||Avalanche: Sunburst||CNFAIC Staff|
|05/17/22||Turnagain||Observation: Tincan Ridge||Joe Kurtak|
|05/11/22||Turnagain||Avalanche: Cornbiscuit and Magnum west faces||CNFAIC Staff Forecaster|
|05/07/22||Turnagain||Observation: Granddaddy||Kit Barton|
|04/29/22||Turnagain||Observation: Sunburst wx station||AS/ MM/ AM/ NH|
|04/28/22||Turnagain||Observation: More Turnagain Pass/Summit Lake wet slab activity||Alex Marienthal|
|04/27/22||Turnagain||Observation: Magnum||Sykes / Buttrick Forecaster|
|04/27/22||Turnagain||Observation: Girdwood/Summit/Turnagain Road obs||A S|
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.