Bollettino valanghe

Logan

Utah Avalanche Center
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Pericolo valanghe

  • Alta quota
  • Limite del bosco
  • Sotto il limite del bosco
Non aggiornato — questo bollettino è scaduto 6 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Areas with CONSIDERABLEdanger exist on steep upper elevation slopes facing northwest through southeast in the Logan Zone. People could trigger avalanches of wind drifted snow, as well as more dangerous avalanches involving old snow and failing on a widespread buried persistent weak layer. It will be warm again today and loose wet avalanches are possible in the heat of the day on steep slopes with saturated snow. Elevated conditions exist and avalanches are possible at all elevations, but you can find safer conditions and nice snow in sheltered and lower angled terrain.

  • Evaluate snow and terrain carefully and make conservative decisions.
  • Stay off and out from under drifted slopes steeper than about 30 degrees.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    2

    South-southwest winds today will continue to drift snow into lee slope avalanche starting zones, and build drifts and wind slabs on steep slopes at upper elevations. Drifting has created thick cohesive slabs, and people could trigger avalanches of wind drifted snow in the backcountry again today.

    • Watch for and avoid stiffer drifted snow near ridge tops and in and around terrain features like gullies, scoops, cliff bands, and sub ridges.
  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1

    Loose wet avalanches are possible in the heat of the day on steep slopes with saturated surface snow.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    3

    Very weak sugary or faceted snow is widespread across the region, and people could trigger avalanches where a slab of more cohesive snow has formed on top of the weak snow.

    • Avalanches failing on a buried persistent weak layer might be triggered remotely, from a distance, or worse from below!
    • Cracking and collapsing of the snow are a red flag, indicating unstable snow conditions.

    These large faceted snow grains make up a nasty buried persistent weak layer that is widespread in the Logan Zone. It exists on slopes at all elevations across the zone. (Stump Hollow, 1-30-2021)

Recent Activity

Tragically, a skier was killed in an avalanche on Square Top in the backcountry above Park City on Saturday. Preliminary Report

Locally: Sunday (1-31-2021), There was a close call near Steam Mill Lake on Sunday. Details are limited, but a snowmobiler triggered a large avalanche and apparently escaped harm.

Saturday (1-30-2021), Riders triggered a good sized avalanche on the east face of Doubletop Mountain (or Gun Sight). Nobody was caught, but another sizable avalanche sympathetically released, and both avalanches crossed the party's previous tracks on the slope.

There were numerous avalanches locally and across the Utah mountains last weekend, especially on Saturday. Visit our avalanche list HERE.

Snow and Weather

It's warm and breezy this morning in the mountains. The overall snowpack is generally still quite shallow across the Logan Zone. South winds are blowing around 30 mph this morning, and it's a balmy 26 °F at the 9700' CSI Logan Peak weather station. Areas with dangerous avalanche conditions exist on drifted slopes in the backcountry, especially on upper elevation slopes facing northwest through southeast. We recommend people continue stay off and out from under slopes steeper than about 30 degrees. You can find pretty nice, fast, settled powder conditions in lower angled and sheltered terrain.

The sun will be out, temperatures will be pretty mild, and it will be another lovely day in the mountains. Expect 9000' high temperatures around 34°F, and a moderate south-southwest breeze. It will snow tonight and tomorrow, with 6 to 12 inches of accumulation possible at upper elevations. Expect southwest winds to intensify tonight and veer from the west tomorrow. More snow is quite possible Thursday night and Friday, and it looks like fair weather in in store for the weekend. On Monday we went up to the Naomi Peak Area to check out a large natural avalanche in Castle Rock that looks like it ran early Saturday before anybody could get up in the area. Here is our video....

Additional Info

Do you have the essential avalanche rescue gear (transceiver, probe, and shovel) and do you know how to use them? Watch this video to see how the three pieces of equipment work together. HERE

Please keep practicing with the Beacon Training Park at the Franklin Basin Trailhead. Test yourself and your riding partners. It is free, fun, and easy to use. Tim Monsell - Logan/Evanston rock climber and telemark skier exited through the portal into the eternal happy powder grounds. Scout it out for us Tim.

Tim Monsell at the Beav!

General Announcements

Thanks to the generous support of our local resorts, Ski Utah, and Backcountry, discount lift tickets are now available. Support the UAC while you ski at the resorts this season. Tickets are available here.

Visit this website with information about Responsible Winter Recreation by the Utah Office of Outdoor Recreation.

EMAIL ADVISORY. If you would like to get the daily advisory by email you subscribe HERE.

Remember your information can save lives. If you see anything we should know about, please help us out by submitting snow and avalanche observations....HERE. You can also call us at 801-524-5304, email by clickingHERE, or include #utavy in your tweet or Instagram.

I will update this forecast by around 7:30 tomorrow morning.

This forecast is from the USDA Forest Service, which is solely responsible for its content. The forecast describes general avalanche conditions and local variations always occur.

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