Turnagain Pass
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As the weather starts to change today be aware of changing avalanche conditions. The forecast is calling for 1-6″ of snow over the next 12 hours combined with moderate Easterly winds. This is enough wind and precipitation to form new wind slabs on steep leeward features, unsupported slopes or cross loaded gullies. Although wind slabs are expected to be small they could be tender, and even a shallow slab could have high consequences in the wrong place. Due to early season conditions, rocks and exposed terrain features are abundant and pretty difficult to avoid right now. Its important to keep in mind that our current surface conditions will be suspect weak layers as snow starts to accumulate. Cold temperatures over the last few weeks have faceted out the snowpack in many places creating a weak foundation. There is at most seven inches of low density snow is sitting on the ground from the road to mid elevations of Turnagain Pass, and in the alpine it’s extremely variable. Check out recent observations and a video below from Seattle Ridge and Tincan this week. Remember if there snow to ride, there’s enough snow to slide! Pay attention for any clues of instability: wumpfing sounds, shooting cracks, or any recent avalanches.
This week expect a big pattern change in the weather as a strong low pressure moves into the Gulf of Alaska. Although there’s still some uncertainty as to how much precipitation the Kenai Mountains will get, expect warmer temps and a shift away from the cold pattern we’ve experienced over the last few weeks. We will be issuing another update on Monday and if this storm materializes, Monday will mark the beginning of daily advisories.
Sparse snow coverage on the SE face of Seattle Ridge, Repeat Offender. Photo taken Friday, November 24th.
Facets have been forming throughout the month of November due to cold temperates and a very thin snowpack. Our current surface conditions could be our next problem layer once we get snow.
Keep an eye out for hollow sounding snow and avoid steep terrain if it looks to be wind loaded: smooth pillowed features.
Strong winds over the last few weeks have created variable surface conditions on windward slopes in the alpine. Photo of Seattle Ridge looking South.
Special AnnouncementsIt is with very heavy hearts that we pass along the news of an avalanche fatality at Hatcher Pass on Wednesday, November 22nd. Hatcher Pass Avalanche Center released a preliminary report yesterday with more details about the accident. You can keep up to date at their website hpavalanche.org and their Facebook page HERE. For the most recent Anchorage Daily News article click HERE. Our deepest condolences go out to the victim’s family and friends at this incredibly difficult time.
Hatcher Pass avalanche conditions: If you are headed to Hatcher Pass this holiday weekend, please check their forecast at hpavalanche.org for avalanche information.
CNFAIC staff will be at the Yamaha dealership on Spenard today (Saturday) from 11-2pm with info about the Avalanche Center, our forecast page, and avalanche rescue equipment.
