Since the recent wind event on Tuesday night we have gotten a number of people reporting small human triggered avalanches, including instances where people have been taken for a ride. The trend continues as more snow gets deposited on the poor bonding surface of sun crusts and facets. The photo below shows a pocket on Magnum yesterday where a skier easily popped this slab loose. Another similar small avalanche was reported on the SW face of Eddies.
The concept to keep in mind today is to stay in terrain where you can safely manage an avalanche of this size. We are dealing with a completely different problem today that we were last weekend and terrain choices must be adjusted accordingly. Small avalanches are likely, but they can be manageable in low consequence terrain. Areas with cliffs below or large steep faces should be avoided.
Snow is currently falling and by tomorrow morning it should be enough to blanket the mountains with a refresh on the surface. It looks like low intensity during the daylight hours today, with an increase coming tonight.
The storm snow by itself could peel off in steeper terrain on the new/old snow interface. Expect some kind of unstable character when the depth reaches a critical mass. We know there is already a tendency for loose snow to sluff in moderate volume and new snow will add to that volume. Given the right combination of wind and temperature the storm snow could break with a slab character, making it a bigger problem than just loose snow alone.
By yesterday the new snow was ~5 inches with a little more in some areas and pockets of wind blown deposits reaching around a foot deep. Temperatures are steady in the 20s and wind has dropped from the recent peak on Friday morning.
Today we have 3-6 inches of snow in the forecast with light to moderate wind from the east. Precipitation should stay as snow all the way to sea level. Tonight the snowfall should increase slightly with another 4-7 inches expected.
Snow remains the dominant weather type going into the work week, with a sunny break possible on Tuesday.
Fitz will issue the next advisory tomorrow morning, March 25th.
|05/21/22||Turnagain||Avalanche: Magnum, Lipps and Tincan||CNFAIC Staff|
|05/17/22||Turnagain||Avalanche: Sunburst||CNFAIC Staff|
|05/17/22||Turnagain||Observation: Tincan Ridge||Joe Kurtak|
|05/11/22||Turnagain||Avalanche: Cornbiscuit and Magnum west faces||CNFAIC Staff Forecaster|
|05/07/22||Turnagain||Observation: Granddaddy||Kit Barton|
|04/29/22||Turnagain||Observation: Sunburst wx station||AS/ MM/ AM/ NH|
|04/28/22||Turnagain||Observation: More Turnagain Pass/Summit Lake wet slab activity||Alex Marienthal|
|04/27/22||Turnagain||Observation: Magnum||Sykes / Buttrick Forecaster|
|04/27/22||Turnagain||Observation: Girdwood/Summit/Turnagain Road obs||A S|
|04/24/22||Turnagain||Avalanche: Seattle Ridge – large glide avalanche on Repeat Offender path||CNFAIC Staff Forecaster|
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: email@example.com
|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.