It has been almost 2 weeks since the last measurable snowfall covered the mountains around the forecast zone. The last loading event was on Feb 23rd (as a result of high winds). On this day we had reports of a few slab avalanches as a direct result of sensitive slabs being built by high winds. Over the last 5 days we have had a consistent melt freeze cycle. This cycle initially produced a round of wet loose and a few slab avalanches.
Another solid freeze overnight will keep the surface snow firm for most of the day. Very steep south facing slopes will likely see some melting today. Because of this it will be important to pay attention to the snow surface as it melts. Very small wet loose avalanches will be possible today in this terrain.
Other hazards to consider today are:
Cornices. Give cornices a wide berth both above and below. Sunshine coupled with a lack of wind will aid in destabilizing these features.
Persistent slabs in steep high elevation terrain on the periphery of the forecast zone and in outlying areas. Melt freeze and sun crusts exist on all surfaces up to most ridgelines and summits. Above 4,000’ (which is a small percentage of the terrain in the advisory area) it will be possible to find dry surface snow. 1-3’ below the surface is a weak layer of facets sitting on the January crust. This layer has not been reactive of late but still exists. It will be remotely possible to trigger an avalanche in very steep terrain that has not been subject to this recent melt freeze cycle.
LOW hazard does not mean NO hazard. It is important to continue to practice good travel habits; expose only one person at a time on steep terrain, avoid cornices, communicate your decisions & plans, and carry and know how to use rescue gear.
It has now been 13 days since snow has fallen at the Center Ridge SNOTEL site. Temps over the past 24 hours averaged 31 degrees F at the Sunburst weather station. Winds there have been light out of the West at 5mph with a max gust of 12mph.
Today expect one more day of clear skies and spring like weather. Temps at 1,000′ will climb back into the low 30s F. Winds will remain very light.
A slight chance for snow showers to develop overnight exists. Snowfall will become more likely later in the day Tuesday into Wednesday. Expect an unsettled pattern throughout the week with generally weak Low pressure systems moving through the region.
|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|
|04/12/21||Turnagain||Observation: Tincan||Johnston-Bloom / Latosuo 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.