|Travel Advice||Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.||Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.||Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding, and conservative decision-making essential.||Very dangerous avalanche conditions. Travel in avalanche terrain not recommended.||Extraordinarily dangerous avalanche conditions. Avoid all avalanche terrain.|
|Likelihood of Avalanches||Natural and human-triggered avalanches unlikely.||Natural avalanches unlikely; human-triggered avalanches possible.||Natural avalanches possible; human-triggered avalanches likely.||Natural avalanches likely; human-triggered avalanches very likely.||Natural and human-triggered avalanches certain.|
|Avalanche Size and Distribution||Small avalanches in isolated areas or extreme terrain.||Small avalanches in specific areas; or large avalanches in isolated areas.||Small avalanches in many areas; or large avalanches in specific areas; or very large avalanches in isolated areas.||Large avalanches in many areas; or very large avalanches in specific areas.||Very large avalanches in many areas.|
Small pockets of wind slab were found occasionally yesterday from the 4-5 inches of new snow that fell on Thursday. Loose snow sluff in the non-wind affected snow was also common, but less of an issue if you use good sluff management technique. Wind slab is most likely found at higher elevations, below ridgetops, and in steep terrain. Both the slabs and the sluffs are shallow and low volume, so as avalanches by themselves they are not a huge concern. The bigger concern is related to the consequences of the terrain such as cliffs or no-fall zones.
Cornices remain a low probability but high consequence avalanche problem. These large overhanging features have the potential to produce the largest avalanches today. Choose your lines to avoid cornice exposure, and always give them a wide berth when traveling on ridge crests.
It’s mid March already. The sun has some significant power that has already built a series of crusts on south facing slopes. As the temperatures rise this afternoon, wet loose snow may start to move at lower elevations on south exposures. Cold temperatures this morning may delay the wet cycle, and any cloud cover will also prevent the surface snow from warming.
Yesterday was one of those perfect Alaska days. Today looks like more of the same. Temperatures are cold this morning, reaching negative temperatures in a few places. Most areas are comfortably in the teens. As soon as the sun hits we can expect rising temperatures for the rest of the day. Partly cloudy skies are forecasted. Wind should be almost non-existent.
We can expect a similar weather pattern for the rest of the week with no major storms on the horizon.
Wendy will issue the next advisory on Sunday, March 17th.
|12/02/23||Turnagain||Observation: Seattle Ridge||Schauer / Keeler Forecaster|
|12/02/23||Turnagain||Observation: Tincan South Side||Anonymous|
|12/02/23||Turnagain||Observation: Eddies up track||Luc Mehl|
|12/01/23||Avalanche: Sunburst||John Sykes Forecaster|
|12/01/23||Turnagain||Observation: Eddie’s trees||Anonymous|
|12/01/23||Turnagain||Observation: Turnagain – God’s Country||Graham Predeger Forecaster|
|11/30/23||Turnagain||Avalanche: Tincan Trees||Kakiko Ramos-Leon|
|11/27/23||Turnagain||Avalanche: Tincan Ridge||Schauer/ Stiassny Forecaster|
|11/26/23||Turnagain||Observation: Road report: Slide with dirt on Repeat offender||Anonymous|
|11/26/23||Turnagain||Observation: Pete’s North||Ben Sullender|