I suppose if it’s not going to be full on spring, it might as well be full on winter. Yesterday’s snow (and possibly another inch or two today) should help refresh and fill in many of the old tracks. Some of us were hoping for a bit more in this neck of the woods but we’ll take it nonetheless.
Today, loose snow avalanches should be easy to initiate. These sluffs will likely run far and fast as they will be sliding on hard surfaces underneath – predominantly on south, west and east aspects. On steeper more sustained slopes they could entrain significant amounts of snow so plan accordingly.
Though winds have been light, so is the snow. It will not take much to move the new snow and deposit it into soft slabs. These should be fairly touchy if you find one and around a foot deep. They are likely confined to the upper elevations and on most aspects due to the changing wind directions. Watching for cracking in the snow around you and feeling for stiffer snow over softer snow will be good clues to suss out any wind slabs.
Sun: Keep a close eye out for when the sun makes its first appearance. Solar heating will quickly destabilize the new snow and sun induced point releases and shallow slab avalanches could be fairly widespread. This may not occur for a couple days but it looks like there is a small chance skies could break this afternoon.
The big snow event that is hitting Anchorage and Hatcher Pass is leaving the Eastern Turnagain Arm a bit high and dry. Snowfall has tapered off this morning but, we have squeaked out several inches of very low density snow – and may pick up another inch or two today. Storm totals at the precip stations around the Arm since 6AM yesterday are:
Turnagain Pass SNOTEL (1900′): 4″ snow – .3″ water eq.
Alyeska Mid Mt (1700′): 7″ snow – .45 water eq.
Summit Lake SNOTEL (1400′): 2″ snow – .1 water eq.
The two SNOTEL sites typically under-represent snowfall when it’s this light. So, we are likely looking closer to 6-8″ on Turnagain Pass and 3-4″ in the Summit area.
Winds associated with the snowfall began light out the east and have shifted around to the NW overnight where they are averaging 5mph with gusts to 10mph. The NW flow is bringing is very cold air and temperatures are currently in the single digits on the ridgelines and the low teens at 1,000′.
Today we can expect lingering snow showers to add another inch or two. Temperatures will be in the 10-15F range above treeline and 15-20F below treeline. Winds look to be light out of the NW (5mph gusting 10mph).
The cold air and scattered snow showers look to remain in place through Thursday.
Kevin will issue the next advisory tomorrow morning, April 10th.
|04/21/21||Turnagain||Observation: Sunburst||Schauer/ Behney Forecaster|
|04/19/21||Turnagain||Avalanche: Triangle, Seattle creek||Will Morrison|
|04/18/21||Turnagain||Avalanche: Turnagain Pass Road Obs||Andy Moderow|
|04/18/21||Turnagain||Observation: Seattle Ridge, approximately 300 yards south of the up track||Brent Byrne|
|04/17/21||Turnagain||Avalanche: Road obs||Johnston-Bloom / Moderow Forecaster|
|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|
|04/16/21||Turnagain||Observation: Sunburst||Lance breeding|
|04/15/21||Turnagain||Observation: Tincan||Schauer/ Rothman Forecaster|
|04/13/21||Turnagain||Observation: Turnagain Pass Road Obs||A Schauer 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: 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.