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Turnagain Pass Avalanche Forecast RSS

Archives
ARCHIVED FORECAST - All forecasts expire after 24 hours from the posting date/time.
Issued
Mon, March 18th, 2013 - 7:00AM
Expires
Tue, March 19th, 2013 - 7:00AM
Forecaster
John Fitzgerald
The Bottom Line

The avalanche hazard is LOW today.   Natural and human triggered avalanches are unlikely at all elevations.   Cornice fall, small loose snow avalanches and isolated pockets of shallow wind slab are potential issues you might encounter.   Sun and warming could weaken the snow surface enough to create small wet loose avalanches in steep sunlit terrain.

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Mon, March 18th, 2013
Alpine
Above 2,500'
Low (1)
Avalanche risk
Treeline
1,000'-2,500'
Low (1)
Avalanche risk
Below Treeline
Below 1,000'
Low (1)
Avalanche risk
Alpine
Above 2,500'
Avalanche risk
Low (1)
Treeline
1,000'-2,500'
Avalanche risk
Low (1)
Below Treeline
Below 1,000'
Avalanche risk
Low (1)
Danger Scale:
No Rating (0)
Low (1)
Moderate (2)
Considerable (3)
High (4)
Extreme (5)
Avalanche Problem 1
  • Normal Caution
    Normal Caution
Normal Caution
Normal Caution means triggering an avalanche is unlikely but not impossible.
More info at Avalanche.org

LOW hazard does not mean ‘no’ hazard.  With continued clear and pleasant weather lately many people have been getting into steep terrain in more remote areas.  Whenever traveling in a new area it is best to pay attention to the snow, despite the current overall good stability.  Start by looking for obvious signs of instability (recent avalanches, shooting cracks, or whoompfing), and then test & get a feel for the snow.  Anomalies exist and it is good practice to be ready for them through snowpack observations and safe travel practices.  Here are some of those anomalies you might encounter today.

Loose Snow
Yesterday my partner and I were able to produce low to medium volume sluffs in steep terrain.  On terrain less than 40 degrees in steepness the loose surface snow did not want to move.  Make sure you recognize when sluffing is occurring and manage your terrain accordingly (get out of the way of moving snow).  With slightly warmer temperatures expected today some low volume sluffs could become damp, especially at the lower elevations.

Cornices
We have seen several large cornice drops during the month of March, though nothing has been reported or observed in the last week.  Many South and Southwest slopes have large cornices looming above them.  Avoidance and minimizing your exposure to these areas is the best way to stay out of trouble.

(Old) Wind slabs
There is a remote chance of finding an old pocket of wind slab sitting on buried facets or surface hoar.  Yesterday we encountered areas where wind slab existed; tests and ski cuts produced no significant results.
 
Despite the overall stability picture, you will be best served by continuing to pay attention to the snow through observation and testing.

Weather
Mon, March 18th, 2013

Clear, cold and calm has been the weather pattern over the last several days.   The last precipitation came 4 days ago.   Temperatures were cool yesterday, with the Sunburst station (3,880′) averaging 10.8 degrees F.   Winds were light, averaging 5 mph out of the NW.

Today should be another pleasant day in the mountains!   Expect clear skies and slightly warmer temperatures than yesterday.   Temps at 1,000′ should reach into the mid to upper twenties F.   Winds will remain light out of the North at 5mph.

This stable weather pattern looks to remain in place for at least the next several days and possibly through the week.

_____________________________________________________________________
Wendy will issue the next advisory tomorrow morning, March 19th.

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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
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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.