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ARCHIVED FORECAST - All forecasts expire after 24 hours from the posting date/time.
Issued
Sat, November 12th, 2011 - 7:00AM
Expires
Sun, November 13th, 2011 - 7:00AM
Forecaster
Kevin Wright
The Bottom Line

Good morning, this is Kevin Wright with the Chugach National Forest Avalanche Information Center on Saturday, November 12th. 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).

AVALANCHE DISCUSSION

Two specific concerns are keeping us from dropping the danger rating to LOW.

The primary concern is the glide avalanche problem. We got a report worth looking at yesterday from a group in the Summit region who had a near miss with one of these full depth avalanches. One of the skiers described it as, “Too

close for comfort. Luckily I was in a pretty safe spot and got to witness the

roar of the debris crashing through the alders! It sounded like a freight train.”

This is a poignant reminder that these avalanches have significant destructive potential, even if the odds of getting hit are low. The best tactic around the glide cracks is simple avoidance. Give the cracks a wide berth and spend as little time as possible below them. More information about glide avalanches can be found HERE.

A secondary concern today is the new storm snow overnight. Small amounts of snow fell overnight with strong wind from the Southeast. There is potential for small wind slabs near the ridges. More snow this morning will contribute to this possibility.

Beyond these 2 concerns our snowpack is shaping up nicely. We have found only a few minor anomalies within the snowpack around Turnagain. A crust layer near the ground gave a relatively clean shear yesterday, but took a lot of force to move. We have not been able to get test columns to propagate in our pits.

MOUNTAIN WEATHER ROUNDUP

A small amount of snow fell last night and this morning. Our instruments are measuring 2-5 inches, with a little more possible at higher elevations. Wind associated with the storm was Southeast to East with ridgetop gusts up to 50mph. This morning anCNFAIC Staff several inches are predicted, with wind shifting Southwest.

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 only a minimal cost of $10.

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

Thanks to our sponsors!
Sat, November 12th, 2011
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 Fri, May 01st, 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
Closed as of May 1. Thanks for a fun, safe season!
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.