After a brief period of clearing yesterday the clouds rolled back in and light snow and rain fell overnight. Today is forecasted to be cloudy with rain and snow showers and the wind and precipitation is forecasted to pick up tonight. What this means is there is a bit of a lull in major loading of the snowpack but there is still a lot of uncertainty about the set-up. We have received a lot of snow and rain (in a short period of time) and had strong winds. Warm temperatures have increased the likelihood that the storm layers are bonding but this has increased the chances for wet avalanches (see below). We have very limited information on the snowpack in the Alpine. There are a variety of concerns for today. This all means a conservative mindset is important.
Storm Slabs: Fluctuating temperatures and snowfall may combine to create storm slabs as new layers of snow are deposited. Pay attention to how well the new snow bonds to the snow below.
Wind Slabs: Winds today will continue to add stress to very large wind slabs in leeward terrain. Human triggering of these could be very dangerous due to the depth of slab. Avoid steep wind-loaded slopes.
Cornices: Natural cornice fall activity is still possible today and could trigger an avalanche on the slope below. Again this something you want to avoid traveling on or underneath. Cornices will be tender and could break way farther back than expected. Falling down the slope with a refrigerator to school bus sized chunk of snow on your snowmachine or skis would be terrible, if not deadly.
The storm that ended yesterday brought rain up to almost 1800′ that fell on to 1-2′ of snow. Temperatures remain around freezing or above at lower elevations. Rain is forecasted to fall again today up to 1600′. All this has created a set-up that is prime for wet avalanches. Natural wet loose and wet slab avalanches will be possible in the mid elevation band today and human triggered avalanches are likely in steep terrain. Look for roller ball activity, that is an indication that the surface snow is loosing strength and avoid terrain traps. Wet snow can be very hazardous especially if it gets moving and stuffs you into bad spot.
Recent wet slab avalanche South of the Bertha Creek campground.
Well… another glide avalanche happened! It was easy to check it out while getting gas at the Girdwood Tesoro. This is a great reminder that many glide cracks are still lurking under the new snow and have the potential to release at any time. Glides threaten a lot of well-traveled terrain on both the motorized and non-motorized side of the highway. Observers also reported that some of glide cracks are reappearing that indicates they are on the move. Avoid travel below glide cracks or under terrain where they might be.
Glide avalanche on the West face of Pyramid Peak. This happened sometime before 10:30 am when we first received a report of it.
The intense storm moved out yesterday and there was a brief window of clearing before the clouds and precipitation moved in again bringing rain and snow showers. Temperatures were above freezing for most day at lower elevations and in the mid to high 20Fs above 3000′. Easterly winds were moderate 25-35 mph with some gusts in the 50s.
Today will be mostly cloudy with continued rain and snow showers. Rain/snow line is forecasted to be around 1600′. 0-5″ of snow could fall at higher elevations. Winds will Easterly 20-40 mph. Temperatures will be in the 30Fs and 40Fs. Precipitation and winds will pick up overnight.
This pattern continues into the weekend with warm temperatures, rain and snow and Easterly winds. Southcentral is in a ‘warm southeast flow’. Lows continue to move into the Gulf and moisture will continue to push into the advisory area.
|Temp Avg (F)||Snow (in)||Water (in)||Snow Depth (in)|
|Center Ridge (1880′)||34||0||.6||134|
|Summit Lake (1400′)||35||0||0||42|
|Alyeska Mid (1700′)||33||1||.14||104|
|Temp Avg (F)||Wind Dir||Wind Avg (mph)||Wind Gust (mph)|
|Seattle Ridge (2400′)||27||n/a||n/a||n/a|
|04/16/21||Turnagain||Avalanche: Seattle Ridge||Wendy Wagner Forecaster|
|04/16/21||Turnagain||Avalanche: Turnagain Pass, non-motorized side seen from Seattle Ridge||CNFAIC Staff Forecaster|
|04/15/21||Turnagain||Observation: Tincan||Schauer/ Rothman Forecaster|
|04/13/21||Turnagain||Observation: Turnagain Pass Road Obs||A Schauer Forecaster|
|04/12/21||Turnagain||Observation: Tincan||Johnston-Bloom / Latosuo Forecaster|
|04/10/21||Turnagain||Observation: north sides||lance breeding|
|04/09/21||Turnagain||Observation: Girdwood to Turnagain Road Observations||W Wagner Forecaster|
|04/05/21||Turnagain||Avalanche: Resort bowl Seattle creek head wall||Clint Kyffin|
|04/04/21||Turnagain||Observation: Center Ridge||Andy Moderow|
|04/03/21||Turnagain||Observation: Repeat Offender – Seattle Ridge||Troy Tempel|
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: firstname.lastname@example.org
|Area||Status||Weather & Riding Conditions|
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.