Temperatures have dropped a little since Monday, but remain above freezing to around 2000 feet. Some minor surface stability issues have been noted with the warming temperatures, but nothing has caused great concern. Riding conditions changed quickly with the warmup. If it was soft carvy powder, it probably isn’t anymore until you get above the zone that thawed at the surface…
Higher up, above 2000-2500 feet, the effects of the warmup will be less noticeable. In this zone the recent precipitation came as snow and wind has been blowing. Watch for wind loading and associated wind slabs. Continued light snowfall today combined with moderate wind will contribute to this problem.
Our old friend that won’t go away is mostly out of sight, but not yet out of mind. As time goes on and the snowpack gets deeper this problem will likely remain dormant unless one or two conditions are met. A person could still cause a deep slab avalanche if he or she finds the unlucky trigger point. This will be an area where the snow depth is thinner, possibly with exposed rocks nearby.
The other factor that will bring us concern would be a large precipitation event. Our current weak storm system is probably not enough to bring the deep slab problem back to life. We will talk about it in stronger terms again during a more powerful storm event.
Above the freezing line we’ve been getting a few inches of snow each day for the past few days. Below freezing line the snowpack is losing depth.
We can expect more of the same weather today with a rain/snow level near 1000 feet and continued light snow. 1-3 inches of snow is possible today with another 2-5 inches tonight. Wind up high will be up to 35mph from the east to southeast. The overall trend through the rest of the week looks colder with continued light snow.
|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|
|Area||Status||Weather & Riding Conditions|