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Turnagain Pass Avalanche Forecast RSS

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ARCHIVED FORECAST - All forecasts expire after 24 hours from the posting date/time.
Issued
Sat, March 31st, 2012 - 7:00AM
Expires
Sun, April 1st, 2012 - 7:00AM
Forecaster
Kevin Wright
The Bottom Line

Good morning. This is Kevin Wright with the Chugach National Forest Avalanche Information Center on Saturday, March 31st at 7am. This will serve as 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).

BOTTOM LINE

Most of the region will have a MODERATE danger rating for multiple problems on most aspects and elevations. Touchy buried surface hoar can be found in the drier snow at higher elevations. Anything receiving lots of sun exposure recently will have buried sun crusts and possibly wet avalanche problems late in the day.

AVALANCHE DISCUSSION

We got several more reports and photos sent in yesterday from recent human triggered avalanches. Most of those happened on Thursday, soon after the snowfall from Wednesday. All the information is indicating buried surface hoar on colder shadier aspects and sun crusts/wet slides on sunnier aspects. Nothing we’ve seen has been very deep or large, but the problems are widespread through the region in terms of location, aspect, and elevation.

Concern #1 – Buried Surface Hoar

Buried surface hoar was apparently quite reactive on Thursday. We got a great report of snowmachine triggered slides in Seattle creek with pictures. AnCNFAIC Staff slide off the West shoulder of Tincan appeared to be skier triggered but was not reported to us. Buried surface hoar is the most likely weakness to be found in drier snow.

Concern #2 – Buried Sun Crust

Southern facing slopes that have been getting a lot of sun recently will have multiple layers of sun crusts, both buried and on the surface. Some recent avalanches have been triggered on these layers. It’s not a good idea to spend time on South faces, especially late in the day.

Concern #3 – Wet loose and wet slab

Spring meltdown starting hitting hard last Sunday and hasn’t let up since. South faces are falling apart pretty quickly, especially at low elevations. Even East and West facing slopes can have wet avalanche problems late in the day.

MOUNTAIN WEATHER

It’s been several days since any significant snowfall. Temperatures have consistently been reaching into the low 40s during the day and barely freezing at night. Crust is forming on the surface in most areas at night.

A weak low pressure system is spinning in the Gulf of Alaska and affecting Southcentral. Rain and snow showers are predicted for today with little accumulation. Warm Spring temperatures will continue to melt the surface up to fairly high elevations.

CNFAIC Weather Page and the NWS forecast

Wendy will issue the next advisory Sunday morning. If you get out in the backcountry we want to know what you are seeing. Please send us your observations using the button at the top of this page or give us a call at 754-2369. Thanks and have a great day.

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Sat, March 31st, 2012
Alpine
Above 2,500'
Moderate (2)
Avalanche risk
Treeline
1,000'-2,500'
Moderate (2)
Avalanche risk
Below Treeline
Below 1,000'
Moderate (2)
Avalanche risk
Alpine
Above 2,500'
Avalanche risk
Moderate (2)
Treeline
1,000'-2,500'
Avalanche risk
Moderate (2)
Below Treeline
Below 1,000'
Avalanche risk
Moderate (2)
Danger Scale:
No Rating (0)
Low (1)
Moderate (2)
Considerable (3)
High (4)
Extreme (5)
Observations
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Riding Areas
Updated Mon, October 26th, 2020

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: mailroom_r10_chugach@fs.fed.us

Area Status Weather & Riding Conditions
Glacier District
Johnson Pass
Closed
Placer River
Closed
Skookum Drainage
Closed
Turnagain Pass
Closed
Twentymile
Closed
Seward District
Carter Lake
Closed
Lost Lake Trail
Closed
Primrose Trail
Closed
Resurrection Pass Trail
Closed
Snug Harbor
Closed
South Fork Snow River Corridor
Closed
Summit Lake
Closed

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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.