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| Advisory: Skyline Area Mountains | Issued by Brett Kobernik for Friday - January 17, 2014 - 8:59pm |
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bottom line A CONSIDERABLE avalanche danger remains on the upper elevation north through east facing slopes approaching 35 degrees and steeper. Human triggered avalanches are likely on these slopes. If you stay away from this terrain, the avalanche danger is much lower. This advisory is valid through Monday, January 20th.
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current conditions We added 12 to 18 inches of snow that contained about 1.5 inches of water from Jan 7 to Jan 12. This was quite a windy storm. The winds did extensive damage along the upper ridges and into a lot of the bowls. We've had 5 days of clear weather since the last storm. There is still plenty of good soft settled snow that you can easily find though. Temperatures have been mild the last two days with highs around 30 along the ridges. Northwest winds have tapered off. |
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recent activity There was one sled triggered avalanche in upper Ephraim Canyon on Monday, January 13th where two people were caught, carried and one partially buried.
There was also lots of natural avalanche activity in the drainages that run down into the Sanpete valley on Sunday, January 12th. This was due to the last blast of the storm which produced strong wind and additional snow. It appears that there was much less avalanche activity in Seeley, Staker, Rolfson, and Lake Canyons. This could be for a couple of reasons. These areas may not have received quite as much snow as the west facing drainages. However, I think the more likely reason is that these drainages had more wind slabs and wind crusts that had formed prior to the storm. These crusts and wind slabs can hold more snow on top of them before the buried facets below fail. If this is the case, there a bunch of slopes that are holding a significant slab over weak sugary snow that may just need a trigger like a person hill climbing.
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| type | aspect/elevation | characteristics |
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LIKELIHOOD
 LIKELY
UNLIKELY
SIZE
 LARGE
SMALL
TREND
 INCREASING DANGER
SAME
DECREASING DANGER
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description
After 5 days of snow settlement, the chance of triggering one of these large avalanches is decreasing but if you do, the consequences are quite large still. Upper elevation north through east facing slopes should continue to be avoided. Most of these slopes that haven't already avalanched have buried weak sugary snow with a new slab on top from last weekend. |
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weather Very mild weather is in store for Saturday, Sunday and Monday with ridgetop temperatures near 30 degrees and light to moderate westerly winds. The ridge of high pressure that is producing this mild dry weather will stick around through at least most of next week. |
| general announcements Donate to your favorite non-profit –The Utah Avalanche Center. The UAC depends on contributions from users like you to support our work.
Benefit the Utah Avalanche Center when you buy or sell on ebay - set the Utah Avalanche Center as a favorite non-profit in your ebay account here and click on ebay gives when you buy or sell. You can choose to have your seller fees donated to the UAC, which doesn't cost you a penny. Utah Avalanche Center mobile app - Get your advisory on your iPhone along with great navigation and rescue tools. The information in this advisory is from the US Forest Service which is solely responsible for its content. This advisory describes general avalanche conditions and local variations always occur. This advisory will be updated by 7:00 AM Saturday Jan. 25, 2014. |
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