Turnagain Pass Avalanche Forecast
The avalanche danger is MODERATE in the Alpine. Winds that blew Monday night into Tuesday morning have created shallow slabs in leeward areas. The most suspect slopes are in steep terrain at the high elevations where the winds have deposited additional snow.
Look for changing conditions as snow and wind impact the advisory area today and tomorrow.
At Treeline and below the danger is LOW.
*If venturing into the ‘periphery’ forecast zones, such as Girdwood Valley, Silvertip and Summit Lake areas, more caution is advised due to limited information about the snowpack in these areas.
Fireside Chat #2 – Avalanche Rescue – Dec 10th!! Join CNFAIC forecaster Heather Thamm Thursday night from 6:30-8:00pm at the Alaska Avalanche School for a presentation on “Rescue Fundamentals”. A successful rescue of a buried individual can hinge on even a little bit of knowledge, we hope to see you there! This class is great introduction if you are new to the topic and a terriffic way to refresh your understanding if you have taken a class before!
Interested in how people make decisions in avalanche terrain? Montana State University’s Snow and Avalanche Laboratory, is leading a project they hope will bring about a better understanding of those risk-taking decisions with a smartphone app. Check out yesterday’s article in ADN to learn how it works, how you can participate and help collect Alaskan data!
The sustained winds from Monday night into Tuesday morning changed the snow conditions in the Alpine. Observers reported pockets of wind slab and scoured ridgelines. While traveling today look for areas that have had recent loading and avoid stiff snow in steep terrain. Watch for cracking and listen for hollow sounds that could indicate the shallow wind slabs may be reactive.
The Turnagain Pass area received an inch of snow yesterday and more is forecasted for today and tonight. Pay attention to changing conditions and expect avalanche danger to increase as we load up the weak surface snow that formed during the period of high pressure and low danger.
What has changed or is changing? These should be the questions in the next few days. Look for Red Flags: recent avalanches, cracking, whumfing, recent snowfall and signs of recent wind. These signs of instability indicate heightened avalanche danger and the need for cautious travel behavior.
Good travel habits, such as exposing one person at a time, watching your partners, grouping up in safe zones and having an escape route planned are, as always, key ways to minimize risk.
Wind effect and rime crust on Big Chief. Photo: Billy Finley
The low in the Gulf is impacting the forecast area today. Skies will be cloudy with snow showers likely throughout the day. New snow accumulation of 1 to 3 inches is possible. Highs will be in the mid 20Fs to upper 30Fs. Winds will be variable from the North.
Snow will continue tonight with an addtional 3-6 inches possible. There is more unsettled weather and snow on tap for later in the week as the pattern continues to push a series of lows into the region.
PRECIPITATION 24-hour data (6am – 6am)
|Temp Avg (F)||Snow (in)||Water (in)||Snow Depth (in)|
|Center Ridge (1880′)||27||1||.1||23|
|Summit Lake (1400′)||25||0||0||11|
|Alyeska Mid (1700′)||24||0||0||18|
|Temp Avg (F)||Wind Dir||Wind Avg (mph)||Wind Gust (mph)|
|Seattle Ridge (2400′)||26||NE-SE||7||13|
|05/22/23||Turnagain||Avalanche: Tincan||Nick D'Alessio|
|05/12/23||Turnagain||Avalanche: Tincan, Sunburst, Magnum, Cornbiscuit||Heather Thamm|
|05/07/23||Turnagain||Observation: Tincan – Bear Tracks||CNFAIC Staff|
|05/05/23||Turnagain||Observation: Seattle Ridge||AS/ WW Forecaster|
|05/02/23||Turnagain||Observation: Cornbiscuit||Schauer/ Sturgess Forecaster|
|05/02/23||Turnagain||Observation: Seward Hwy Turnagain Pass||Joel Curtis|
|04/30/23||Turnagain||Observation: Magnum||Ayla, Kit Crosby, Barton|
|04/29/23||Turnagain||Observation: Tincan||John Sykes|
|04/28/23||Turnagain||Avalanche: Taylor Pass/Pastoral||Schauer/ Creighton Forecaster|
|04/28/23||Turnagain||Avalanche: Tincan||Andy Moderow|
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|
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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.