Turnagain Pass RSS

Archives
ARCHIVED - Forecasts expire after 24 hours.
Issued
Sun, November 13th, 2011 - 7:00AM
Expires
Mon, November 14th, 2011 - 7:00AM
Forecaster
Wendy Wagner
Avalanche risk The Bottom Line

Good morning, this is Wendy Wagner with the Chugach National Forest Avalanche Information Center on Sunday, November 13th 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

The avalanche danger is MODERATE on all wind drifted slopes for wind slab and soft slab avalanches formed in the recent storm snow. Winds are forecast to remain strong enough to continue building wind slabs and drifts throughout the day in favored locations. Additionally, glide avalanches remain a concern and deserve respect.

Reminder of the Danger Rating system

AVALANCHE DISCUSSION

One recent glide avalanche, a couple human triggered wind slab avalanches and several shooting cracks were reported yesterday. Check out the photo/observations page for a few of these details. Snowfall, low visibility and gusty winds kept many folks in the trees as well as limited the avalanche information for above treeline.

As skies begin to break up today and people venture onto the open slopes, wind slabs will be the primary concern. North and westerly winds have been gusting in the 30 to 40+ mph range, this is enough to blow the low density snow into wind pockets and slabs. Look for these on and off ridgelines, in gullies and below rollovers. Shooting cracks and stiff, hollow feeling snow are bulls eye clues you are on, or at the edge of, a wind slab. Additionally, keep an eye out for areas the storm snow has not bonded to the old surface. New snow sluffing and soft slabs may be easy to initiate and run far, especially in areas with a hard surface underneath such as an old wind slab.

Glide avalanches remain a legitimate concern. Because of their unpredictable nature, it is best to limit exposure around and below their dark cracks. These cracks may be hard to identify after the recent shot of new snow and filled in by the wind. They also may be lurking traps doors.

MOUNTAIN WEATHER ROUNDUP

By this morning, there is around 8-12″ of low density snow in the Girdwood, Turnagain Pass and Summit Lake areas. 6-10″ fell yesterday with, what looks like, anCNFAIC Staff 2-4″ overnight. Winds were gusty yesterday but have picked up from the north and west, blowing in the 20-35mph range for the last 12 hours. Temperatures remain in the teens at the upper elevations. Today, scattered snow showers should diminish throughout the day as skies begin to clear. Expect winds to be from the west at 25-40 mph on the ridges with temperatures in the teens.

CNFAIC Weather Page and the NWS forecast

ANNOUNCEMENTS

We are in the season of Fireside Chats, free avalanche awareness talks from your local avalanche center. Show up on Wednesday nights at 7pm at the Forest Service Ranger Station in Girdwood. More details are on our training and calendar page.

WEBSITE CHANGES and INFO

We have expanded our photos page to include observations from both the CNFAIC forecasters as well as the public. Please keep checking this page as there will be lots of information to glean. Thanks to all the observations submitted so far!

Check out the training and calendar page on our site. Here you will find avalanche awareness talks and CNFAIC Staff education information. Including a link to an application for a snow safety scholarship offered by the Friends of the CNFAIC – a great opportunity! You must be a member but it’s donation based with a $10 minimum.

A huge thanks to all our current members for your support! The Friends could not do it without you and us without the Friends.

I will issue the next advisory tomorrow morning at 7am. If you get out in the backcountry give us a call at 754-2369 or send us your observations using the button at the top of this page. Thanks and have a great day.

Sun, November 13th, 2011
Alpine
Above 2,500'
2 - Moderate
Avalanche risk
Treeline
1,000'-2,500'
2 - Moderate
Avalanche risk
Below Treeline
Below 1,000'
2 - Moderate
Avalanche risk
0 - No Rating
1 - Low
2 - Moderate
3 - Considerable
4 - High
5 - Extreme
Avalanche risk Avalanche risk Avalanche risk Avalanche risk Avalanche risk
Travel Advice Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features. Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern. Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding, and conservative decision-making essential. Very dangerous avalanche conditions. Travel in avalanche terrain not recommended. Extraordinarily dangerous avalanche conditions. Avoid all avalanche terrain.
Likelihood of Avalanches Natural and human-triggered avalanches unlikely. Natural avalanches unlikely; human-triggered avalanches possible. Natural avalanches possible; human-triggered avalanches likely. Natural avalanches likely; human-triggered avalanches very likely. Natural and human-triggered avalanches certain.
Avalanche Size and Distribution Small avalanches in isolated areas or extreme terrain. Small avalanches in specific areas; or large avalanches in isolated areas. Small avalanches in many areas; or large avalanches in specific areas; or very large avalanches in isolated areas. Large avalanches in many areas; or very large avalanches in specific areas. Very large avalanches in many areas.
Observations
Recent Observations for Turnagain Pass
Date Region Location
02/24/24 Turnagain Observation: TinCan Backdoor/ Center Ridge
02/22/24 Turnagain Avalanche: Lynx Creek
02/22/24 Turnagain Observation: Turnagain, Seattle, Mt Ascension
02/21/24 Turnagain Observation: Tincan Trees
02/21/24 Turnagain Observation: Sunburst
02/20/24 Turnagain Avalanche: Tincan
02/20/24 Turnagain Observation: Seward Highway across from Johnson Pass TH
02/19/24 Turnagain Avalanche: Base of Seattle Ridge
02/18/24 Turnagain Observation: Lynx creek
02/18/24 Turnagain Observation: Tincan Trees
Riding Areas

The riding areas page has moved. Please click here & update your bookmarks.


Subscribe to Turnagain Pass
Avalanche Forecast by Email

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.