An intense two-day storm concluded this morning leaving 4’ of new snow in the alpine. Strong Easterly winds averaged 30-40mph and rain was observed to 1500’ and possibly as high as 2000′. Overnight temperatures remained above freezing at 1000’ and today there is a possibility of clearing skies and sun. This is not a good combination for our currently stressed out snowpack! DON’T FORGET WE HAVE RECEIVED 8” of WATER (over 8’ of new snow) in the last FIVE DAYS and experienced a big avalanche cycle during the first storm event on Sunday, Feb.21. Very little information is known about our most recent loading event, but we did recieve several reports of ‘wumpfing’ on Tincan and a seperate group could hear avalanche activty in the Johnson Pass area. What we do know is the only thing that will help this snowpack heal is time and cooling temperatures, both of which we do not have.
Today’s weather forecast has us prepared for everything; scattered rain and snow showers, moderate winds, or periods of clearing skies and a posibility of sun. Should the sun grace us with its presence the likelihood of natural activity will increase today. Below is a list of the avalanche problems to be aware of.
Wind Slabs: This morning moderate Easterly winds will continue to add stress to very large wind slabs. These slabs could be as thick as 4-6’ and have the potential to be large, connected and run to the valley floor. If the sun appears today wind slabs will be extra sensitive to a human trigger. Today it is best to avoid all runout zones and stay off of slopes steeper than 30 degrees.
Wet Snow: Today’s weather forecast is calling for scattered rain showers to 2000’, but there is also a possibility of clearing skies and sun. Both weather concerns can produce wet avalanches, but the sun could have a bigger influence on solar aspects, especially in the alpine.
Cornices: Natural cornice fall activity is possible today and will be an additional trigger of large natural avalanches.
Over 8′ of snow has fallen in the alpine in Turnigan Pass and many of the steep gullies along Seattle Ridge are full of debris.
Yesterday afternoon parking was limited due to 12″ of wet saturated snow along the road corridor of Turnagain Pass.
Underneath all the new snow glides are still lurking and have the potential to release at any time. Glides threaten a lot of well-travelled terrain on both the motorized and non-motorized side of the highway. Still looking for a reason to avoid avalanche terrain and runout zones today??? Here is one more avalanche dragon to steer clear of.
A potent storm that lasted 2 days has ended this morning depositing 3-4' of new snow (3.4 € of snow water equivalent) in the upper elevations. Yesterday rain was observed to 1500', but may have reached 2000' overnight. Temperatures remained above freezing overnight (35F) along Turnagain Pass (1000'). Northeast ridgetop winds were strong for the duration of the storm averaging in the 30-40s mph with gusts in the 70's.
Today a brief break in the weather has us prepared for everything. Snow and rain showers are anticipated with a possibility of 4-6 € of snow in the upper elevations. It is also possible that we could experience periods of clearing skies and sun. Moderate Easterly ridgetop winds are expected to become light by early evening. Temperatures will remain warm today with snow/rain line as high as 2000'.
Another storm is on track for Friday with several more stacked up behind it. A continuation of rain, snow, strong winds and warm temperatures is anticipated through the weekend.
|Temp Avg (F)||Snow (in)||Water (in)||Snow Depth (in)|
|Center Ridge (1880')||33||6-8" wet snow||1.9||139|
|Summit Lake (1400')||34||rain||0.6||44|
|Alyeska Mid (1700')||33||3" wet snow||1.93||106|
|Temp Avg (F)||Wind Dir||Wind Avg (mph)||Wind Gust (mph)|
|Seattle Ridge (2400')||28||~||~||~|
|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: 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.