Turnagain Pass Avalanche Forecast RSS

Archives
ARCHIVED FORECAST - All forecasts expire after 24 hours from the posting date/time.
Issued
Thu, April 24th, 2014 - 7:00AM
Expires
Fri, April 25th, 2014 - 7:00AM
Forecaster
Kevin Wright
Avalanche risk The Bottom Line

Avalanche danger is generally  LOW again today at all elevations.  The possible exception to this will be late in the day as the snowpack warms up and loses strength.

We have seen some wet loose avalanche activity from warm temperatures in the afternoon/evening.  These slow moving avalanches can pick up enough volume to be dangerous if you are in the wrong place at the wrong time.  

Special Announcements
  • Turnagain Pass is now  CLOSED  to motorized use  due to low snow cover.  Snug Harbor road is the only area in Chugach National Forest open to motorized use.

  • Mark your calendars!!  The  2014 Corn Harvest  will be Saturday, April 26th at the Turnagain Pass Center Ridge parking lot. Come by for free food, games and fun!  More details  HERE.
  • This is the final week of advisories.   They will be issued today through Sunday, April 27th.
Thanks to our sponsors!
Thu, April 24th, 2014
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

The snowpack continues to melt slowly each day.  Night-time temperatures are the key right now, with below freezing temps allowing the snowpack to maintain a little bit of strength.  This strength will be lost (and avalanche danger may increase significantly) if we get nights without freezing temperatures.  For today, we don’t expect a significant change from conditions over the last week.  

Wet loose avalanches have been noted in our zone recently.  The West face of Pyramid peak had a couple of lobes of wet loose snow travel the full length of the face sometime in the last 2 days.  This kind of avalanche activity is very unlikely in the morning when temperatures are colder, and increases in probability as the day gets warmer and the snow gets softer.  

Cornice fall will also become more dangerous late in the day as warming increases the possibility for spontaneous or human triggered cornices.  

The snowpack is very close to an “isothermal” state.  This is the point where all layers in the snowpack are the same temperature – 32 degrees.  Clues we monitor to gage the strength of the snowpack at this point include – natural avalanche activity, boot or ski penetration, “wetness” of the snowpack, and free water being released from the snowpack.  If these factors get significantly worse, then the backcountry could become dangerous.

Weather
Thu, April 24th, 2014

With no precipitation to speak of in several days, temperature is the most significant meteorological factor.  At mid elevations, temperatures are reaching the mid 40s during the peak of the day.  Overnight we had cooling down to below freezing.

                                     Low    High
Sunburst (3,812′)                     25       34.9
Seattle (2,400′)                           27.4     34.5
Center Ridge (1,880′)     28.9     48.7  

Our recent stretch of sunny and warm days looks to be coming to a close today.  Clouds will be moving in this afternoon with a chance of rain over the next few days.  Wind will increase tonight, with a Southeast flow to 16-25mph at the ridgetops.  

Observations
Recent Observations for Turnagain Pass
Date Region Location
05/17/22 Turnagain Avalanche: Sunburst
05/17/22 Turnagain Observation: Tincan Ridge
05/11/22 Turnagain Avalanche: Cornbiscuit and Magnum west faces
05/07/22 Turnagain Observation: Granddaddy
04/29/22 Turnagain Observation: Sunburst wx station
04/28/22 Turnagain Observation: More Turnagain Pass/Summit Lake wet slab activity
04/27/22 Turnagain Observation: Magnum
04/27/22 Turnagain Observation: Girdwood/Summit/Turnagain Road obs
04/24/22 Turnagain Avalanche: Seattle Ridge – large glide avalanche on Repeat Offender path
04/24/22 Turnagain Avalanche: Seattle Ridge uptrack
Riding Areas
Updated Fri, May 13th, 2022

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
Closed as of May 1 per Forest Plan.
Placer River
Closed
Closed as of April 25th due to insufficient snow coverage.
Skookum Drainage
Closed
Closed as of April 1st per Forest Plan.
Turnagain Pass
Open
Open. Extended opening through May 31.
Twentymile
Closed
Closed as of April 6th due to insufficient snow coverage.
Seward District
Carter Lake
Closed
Closed as of May 1 per Forest Plan.
Lost Lake Trail
Closed
Closed as of May 1 per Forest Plan.
Primrose Trail
Closed
Closed as of May 1 per Forest Plan.
Resurrection Pass Trail
Closed
Closed as of May 1 per Forest Plan.
Snug Harbor
Closed
Closed as of May 1 per Forest Plan.
South Fork Snow River Corridor
Closed
Closed as of May 1 per Forest Plan.
Summit Lake
Closed
Closed as of May 1 per Forest Plan.

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.