Share your feedback! Share your feedback!

How’s our new website?
How can we better serve you?

Turnagain Pass Avalanche Forecast RSS

Archives
ARCHIVED FORECAST - All forecasts expire after 24 hours from the posting date/time.
Issued
Tue, March 5th, 2019 - 7:00AM
Expires
Wed, March 6th, 2019 - 7:00AM
Forecaster
Aleph Johnston-Bloom
The Bottom Line

A generally  LOW  avalanche danger remains across the advisory area. Triggering a slab avalanche is unlikely. Watch for sluffing on steep shaded slopes, avoid travel under glide cracks and give cornices a wide berth. Pay attention to changing conditions.

 

Thanks to our sponsors!
Tue, March 5th, 2019
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

After a beautiful sunny day in the mountains clouds moved back into the area overnight. There is a chance of snow today and increased easterly winds but this should not have much impact on avalanche hazard. Watch for changing conditions if more snow falls than forecasted.

Today will be another day of Normal Caution (LOW danger). Things to keep in mind if you are headed into the backcountry:

  • Glide avalanches – These types of avalanches are highly unpredictable and not associated with human triggers. It’s always best to watch for and limit exposure under glide cracks.
  • Dry-loose sluffs – Watch your sluff on steep shaded slopes.
  • Cornice falls – As always, give cornices a wide berth. 
  • An outlier slab avalanche – Although it is unlikely a person could trigger a slab avalanche, the mountains can harbor surprises, especially in thin snowpack areas. South of Turnagain in the Summit Lake and Silvertip zones there is a shallow snowpack with a generally poor structure. A variety of old weak layers (facets and buried surface hoar) sit in the mid and base of the snowpack. The most suspect place to trigger an avalanche is steep terrain with old, hard wind slabs sitting on weak snow. 
  • Considering the consequences before entering into committing terrain and maintaining good travel protocol are good habits to keep on LOW danger days.

In anticipation of snow, we have been closely mapping the surface conditions as well as watching for new surface hoar growth. Surface hoar has been observed from valley bottoms to the Alpine and is resting on a variety of surfaces. There is a stout sun crust on southerly facing slopes. On shaded aspects 4-8″ or so of soft near surface facets sit over a firmer base and sastrugi, wind crust and/or rime crust can be found along ridgelines. The question is will it snow just enough today to bury the surface hoar and will we call it the “Fat Tuesday/Mardi Gras” weak layer? Hopefully some surface hoar will be knocked over by the wind!

Surface hoar, Tincan, 3-4-19. Photo: Eeva Latosuo

Sun crust with surface hoar and stellars (from Sunday), Twin Peaks, 3-4-19. 

Weather
Tue, March 5th, 2019

Yesterday: Partly cloudy skies becoming mostly sunny. There was some valley fog in the morning. Winds were light and temperatures were in the teens to 20Fs at upper elevations and in the 30Fs at sea level. Overnight clouds moved in and winds picked up slightly. Temperatures were in the teens to 20Fs.  

Today: Mostly cloudy skies with a chance of snow showers. Winds will be southeasterly 5-15 mph with gusts into the 20s. Temperatures will be in the 20Fs. Overnight looks to be similar with winds becoming calm.    

Tomorrow: Continued cloudy skies with a chance of snow, calm winds and temperatures in the 20Fs. A more promising storm still looks to be on track for the weekend.  

PRECIPITATION 24-hour data (6am – 6am)

  Temp Avg (F) Snow (in) Water (in) Snow Depth (in)
Center Ridge (1880′)  25  0 0   58  
Summit Lake (1400′)  19  0  0     27  
Alyeska Mid (1700′)  24   0    0     53  

RIDGETOP 24-hour data (6am – 6am)

  Temp Avg (F) Wind Dir Wind Avg (mph) Wind Gust (mph)
Sunburst (3812′)  17  E 4   18  
Seattle Ridge (2400′)   22     E    5     14  
Observations
Recent Observations for Turnagain Pass
Date Region Location
05/06/20 Turnagain Avalanche: Pastoral Peak, north face
04/10/20 Turnagain Avalanche: Wolverine
04/10/20 Turnagain Observation: Eddies lookers right shoulder
04/09/20 Turnagain Observation: Bench Peak
04/04/20 Turnagain Observation: Tincan
04/04/20 Turnagain Observation: Pete’s North
03/26/20 Turnagain Avalanche: Tincan – Proper (SW facing)
03/26/20 Turnagain Avalanche: Seattle Ridge
03/25/20 Turnagain Avalanche: Sunburst Uptrack @ 2000′
03/24/20 Turnagain Observation: Turnagain – Road Observations
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

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.