Turnagain Pass Avalanche Forecast RSS

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ARCHIVED FORECAST - All forecasts expire after 24 hours from the posting date/time.
Issued
Sun, March 26th, 2017 - 7:00AM
Expires
Mon, March 27th, 2017 - 7:00AM
Forecaster
Heather Thamm
Avalanche risk The Bottom Line

In Turnagain Pass there is a LOW  avalanche danger in the backcountry  at all elevations. Remember LOW danger does not mean NO danger.  Be aware of fast moving €˜sluff’ where getting knocked over could have high consequences. In the afternoon on solar aspects triggering a wet loose avalanche may be possible should the snow become wet or moist. Give Cornices and glide cracks extra space and avoid being under these features.

Placer/Skookum: Triggering a slab avalanche up to 2′ thick in steep terrain is becoming unlikely, but its not completely out of the questions. In this area – it will be extra important to avoid solar aspects should you notice any wet surface snow or wet loose activity on Southerly slopes.  

Good travel habits remain important, even during ‘green light conditions’. This includes exposing only one person at a time on a slope, watching your partners closely and having an escape route planned in case the snow moves.  

Read the Saturday Summit Summary  HERE.

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Sun, March 26th, 2017
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

Cool temperatures and mild weather this week have been helping the snowpack adjust to a storm that left 6” to 30” of snow throughout our region last Sunday (3/19/17). Slope testers have been hitting the slopes hard and its been several days since any avalanche activity has been reported. Most of these avalanches have been small slabs, not well connected, and have been mostly on solar aspects during the heat of the day. This serves as a good reminder to pay attention to surface conditions as daily warming and sun may cause a sun crust on Southerly aspects to break down. Today’s cloud cover (if thin) and temperatures in the high 20F’s could act as ‘green house’ – trapping warm air. Should you notice wet surface snow or roller balls, it may be possible to trigger a wet avalanche in the afternoon. In Placer/Skookum where snow totals were deeper (2+’ deep), unexpected warming today could ripen the conditions for a bigger avalanche in this zone. Any natural or human triggered wet loose activity will be a sign to avoid steep Southerly slopes in the afternoon. Also be aware of the following avalanche problems:  

LOOSE SNOW AVALANCHES (SLUFFS):  Human triggered dry loose snow avalanches continue to be easily triggered on steep slopes without a sun crust on the surface. Watch your sluff if headed to steep terrain with loose surface snow, they could be larger and run further than expected

CORNICES:  There has been a couple of cornice breaks after the storm and cornices are always worth giving a wide berth. Direct sunshine and warming can help to loosen them. 

GLIDE CRACKS: Glide cracks continue to slowly ooze open on Seattle Ridge, Tincan’s Library, Lynx creek and other zones. Keep an eye out for them and limit time spent underneath.

Although this avalanche was from a earlier in the week, if the sun crust starts to become wet today, triggering a wet avalanche may be possible.  

 

One of several glide cracks opening up in Lynx Creek on a Southeast aspect. 

 

 

Weather
Sun, March 26th, 2017

Yesterday skies were clear. Temperatures in the morning were around 10F increasing into the high 20F’s by mid afternoon. Temperatures in the alpine reached 20F. Winds were light from the East and no new precipitation occurred.  

Today skies are expected to be mostly cloudy with isolated snow showers, but the sun may still pop out at times. By this evening more cloud cover is expected and up to an inch of snow is possible. Daily temperatures swings are expected to range from 20F to 30F by mid day. Ridge top winds should remain light (5-10mph) from the East.  

Tomorrow scattered snow showers are likely. Similar temperatures are expected, 20F – 30F, with light winds out of the Northeast, 5-10mph. The next few days look similar. A pattern shift is expected later in the week bringing warmer temperatures, but a good deal of uncertainty remains as to how much precipitation.

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

  Temp Avg (F) Snow (in) Water (in) Snow Depth (in)
Center Ridge (1880′) 18   0   0   63  
Summit Lake (1400′) 18    0 0   29  
Alyeska Mid (1700′) 21   0   0   58  

RIDGETOP 24-hour data (6am – 6am)

  Temp Avg (F) Wind Dir Wind Avg (mph) Wind Gust (mph)
Sunburst (3812′) 15    NE 5   13  
Seattle Ridge (2400′) 17   E   2   8  
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Riding Areas
Updated Thu, April 01st, 2021

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
Open
No parking in turnaround at end of the road near the outhouse.
Placer River
Open
Please do not ride along Railroad tracks. Cross tracks at 90 degree angle and clear the right of way.
Skookum Drainage
Closed
The Skookum Valley is closed to snowmachines. This closure occurs annually on April 1 as per the CNF Forest Plan.
Turnagain Pass
Open
Twentymile
Open
Please do not ride along Railroad tracks. Cross tracks at 90 degree angle and clear the right of way.
Seward District
Carter Lake
Open
Lost Lake Trail
Open
Primrose Trail
Open
Resurrection Pass Trail
Closed
Closed for the 2020/21 winter season.
Snug Harbor
Open
South Fork Snow River Corridor
Open
Summit Lake
Open

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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.