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Advisory: Logan Area Mountains | Issued by Toby Weed for March 31, 2013 - 7:10am |
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![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Above 8,500 ft.
7,000-8,500 ft.
5,000-7,000 ft.
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bottom line Midday warmth will create heightened avalanche conditions and a MODERATE (or level 2) danger of wet and heat related avalanches on slopes with saturated snow. Ridge-top cornices could naturally fall due to warming, and might break further back than expected, if you get out on one. Some natural wet avalanche and cornice fall activity is possible in steep terrain. Evaluate the snow and terrain carefully, consider an early departure due to warmth and increasing avalanche danger, and continue to follow safe travel protocols...
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special announcement iPhone & iPad users: With help from Backcountry.com & Garafa, LLC, we now have a free mobile app that combines the best of the UAC advisories, observations, and weather summaries with National Weather Service products & UDOT road updates. This puts the tools you need for planning your day and your run in one handy mobile package. Check it out, tell your friends, and let us know what you think.http://utahavalanchecenter.
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current conditions The Tony Grove Snotel at 8400' reports 33 degrees, (which is the 24 hr low) and with 54"of total snow, the station sits at 62% of average water for the date. The CSI Logan Peak weather station at 9700' reports 30 degrees and west winds averaging in the single digits early this morning. With only a superficial overnight refreeze again, the saturated snow will quickly soften up with today's warmth. An early departure from the backcountry is good idea if you start sinking into heat softened wet snow... Here is a video observation from yesterday afternoon; 3-29-2013, Maple Bench
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recent activity No avalanches were reported in the Logan Area since last weekend's shallow wind slabs and some minor wet sluffing on Monday. Here's a link to our updated Avalanche List.
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type | aspect/elevation | characteristics |
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![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Above 8,500 ft.
7,000-8,500 ft.
5,000-7,000 ft.
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description
Expect a rising danger of wet avalanches as mountain temperatures rise with midday warmth again today, and heightened avalanche conditions will develop in steep terrain. Once again, mountain weather stations report above or near freezing overnight temperatures. Any surface refreeze today is thin and superficial, with softening of the snow from midday heat likely to occur even earlier today. North facing slopes are getting wetter and potentially more active as buried layers of dry and winter-like snow become moistened.... Pin wheels or roller balls are signs that the surface is heating up, and you should avoid travel on or under steep slopes with saturated surface snow. As always, watch for terrain traps like trees or gullies below you. It's best to plan for an early exit this time of year and retreat if you start sinking into warmth softened wet snow. |
type | aspect/elevation | characteristics |
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![]() ![]() ![]() ![]() ![]() ![]() Above 8,500 ft.
7,000-8,500 ft.
5,000-7,000 ft.
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description
The midday warmth will cause large cornices to sag and buckle, and some may naturally calve off, threatening slopes below. Use caution traveling along the ridges, since the warming cornices could be sensitive to human weight and might break further back than expected. |
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weather Expect mostly sunny skies and warm temperatures in the mountains again today. High temperatures at 9000' could reach the mid forties, and there will be a moderate west-northwest wind. It'll be mostly clear tonight, with diminishing west winds and a low temperature only around freezing. Mountain temperatures will peak on Sunday, with 9000' high temperatures a few degrees warmer than today's, mostly sunny skis in the morning and a chance of rain or snow showers in the afternoon. Check out the Logan Mountain Weather page...
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general annoucements For a printer friendly version of this advisory click HERE Remember your information from the backcountry can save lives. If you see or trigger an avalanche, or see anything else we should know about, please send us your snow and avalanche observations. You can also call us at 801-524-5304 or email by clicking HERE. In the Logan Area you can contact Toby Weed directly at 435-757-7578. I will update this advisory on Monday, Wednesday, Friday, and Saturday mornings by around 7:30... This advisory is produced by the U.S.D.A. Forest Service, which is solely responsible for its content. It describes only general avalanche conditions and local variations always exist. |