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Topic: Avalanche on "safe" route at Pan Point, Mt Rainier (Read 1799 times)
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Amar Andalkar
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Some interesting photos of recent avalanche crowns from the February 21 extreme-danger avalanche cycle were posted a couple of days ago on the Rainier climbing blog: http://mountrainierclimbing.blogspot.com/2012_02_01_archive.html
Most notably, at Panorama Point "the alternate/winter route experienced some activity":
(click for double-size version)
This is on a south aspect, slope angle of about 40 degrees (see topo map centered on that slope). The highest part of the crown is at about 6600 ft (a convex roll where the slope angle increases from about 30 degrees to 40 degrees) and the debris pile is at about 6400 ft. It looks like a soft slab of the most recent storm snow, since the avalanche debris did not travel past the base of the slope, so it couldn't have been moving too fast. Still more than enough debris to bury someone, or an entire party traveling too close together.
The area which slid is along (what is considered to be) an avy-safer alternative to the standard snow route up the middle of Panorama Face (at left edge of photo), which goes up a classic avalanche slope that has been the location of previous avalanche accidents, including at least 1 fatality. Another route variation that is preferable to the standard route stays along the rightmost edge of Pan Face just below the trees, then cuts sharply right through one of several gaps in the trees to gain the SW ridge of Panorama Point near 6600 ft, on a moderate slope somewhat above the top of the crown in the photo.
Here is the archived NWAC avalanche forecast and danger rose for Tuesday, Feb 21: http://www.nwac.us/archive/sabsea_2012-02-21-1225.html
With avalanche conditions that dangerous, clearly even a relatively "avy-safe" route can produce a substantial slide. There is no safe route to Camp Muir in conditions like that.
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Andrew Carey
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Posts: 1026
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Did you see the waffle? I was in the parking lot when Carrie yelled out window "we're cooking waffles; you're welcome to come; no kidding!" I should have took her up on the offer, but I just finished buckling my boots.
When I (and Robie, and Vogtski, and Jeff, and Ed) was up there Monday?, I skinned up from 4th Xing to the back bowl and and was blown away by the fracture lines on all aspects! Most avy activity I've ever seen above Paradise.
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... want your own private skintrack? :-) better move to the yukon dude ....(B'ham Allen, 2011).
...
Andy Carey, Nisqually Park, 3500 feet below Paradise
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vogtski
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Posts: 499
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Monday there were still crown fractures visible all around the Mazama 'back bowl', both south and north aspects. Many of the slides from this cycle here and in Paradise Valley also had very short travel distances and a couple almost looked like large slumps or glide cracks.
There was a much larger avalanche with fifteen feet deep deposition at the Dry Creek summer parking lot on the Westside Road. This slide ran over a mile and three thousand vertical feet off Mt Wow.
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I feel like I'm diagonally parked in a parallel universe.
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CookieMonster
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I'm very surprised to hear that anyone thinks the route indicated is "safer"!
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bc_skier
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Dito...any slope between 30 - 45 degrees (with snow on it) has the potential to slide in the right conditons.
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Oyvind_Henningsen
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Posts: 270
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good observation, yeah that pocket under the roof of your a-frame gets super windloaded real fast during predominant wind direction at that place. my opinion is that it is possible to (if you have to) pick a safer route on this ridge feature, assuming good visibility as the feature goes in between the two slabs that have pulled out. the ridge is not big and it requires local knowledge to thread the needle. of course if this is the situation you are electing to be in (going up) you have to ask yourself WHY am I here right now? if you are choosing this route as a good habit wise travel practice instead of herding up the big slope to the left on a deemed 'stable' day, then kudos.
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Lytt til erfarne fjellfolk!
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nhluhr
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Posts: 12
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I'm very surprised to hear that anyone thinks the route indicated is "safer"!
the safer route is not 'indicated' on the photo. the indications on the photo are highlighting the fracture crown. The so-called safer route is through the trees on the left.
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