Avalanche Advisory published on March 24, 2017 @ 7:38 am
This Avalanche Advisory expires in 14 hours, 22 minutes
This advisory is valid for 24 hours
Issued by Eric Morgan - Idaho Panhandle Avalanche Center

Selkirks/Cabinets

bottom line

Currently Crust on Surface with warming temps and snow today which could lead to loose wet slides on steeper terrain over 32 degrees on all aspects.  Avalanche hazard is being held in check by the melt/freeze conditions from the last few days and nights.  The pack is isothermal and there are no serious lingering weak layers in the upper 3 feet above the thick crust.  New snow and warming temperatures will be your main concern later today and this weekend.

How to read the advisory


  • Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.

Selkirks/Cabinets

How to read the advisory

1. Low

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Above Treeline

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Near Treeline

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Below Treeline

Currently Crust on Surface with warming temps and snow today which could lead to loose wet slides on steeper terrain over 32 degrees on all aspects.  Avalanche hazard is being held in check by the melt/freeze conditions from the last few days and nights.  The pack is isothermal and there are no serious lingering weak layers in the upper 3 feet above the thick crust.  New snow and warming temperatures will be your main concern later today and this weekend.

  • Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
Avalanche Problem 1: Loose Wet
  • Character ?
  • Aspect/Elevation ?
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    Certain
    Very Likely
    Likely
    Possible
    Unlikely

With the incoming precipation and warming temperatures, watch for loose wet slides on the existing surface ice crust.  The snow just started this morning so watch for how the initial bond is and how heavy the days snow comes in.  

recent observations

Yesterday I travelled into the Purcells area with Ben and Nate off of the Kootenai to monitor the deeper instabilities that the Kootenai have been tracking through the winter. The weak layers deep at the ground are dissipating due to the heavy rains and warm spring temperatures.  We observed the remnants of multiple slides that likely released during Saturdays rain event.  There was 5" of fresh snow on top of a 4" thick rain crust. Weaknesses within the snowpack are unlikely to be triggered by snowmobilers or skiers.  The Selkirks and Cabinets missed out on this snow event with receiving only a dusting that sits on the same raincrust, however this could change with the upcoming weather today where we could see up to 6 inches by tonight.  Watch for wet snow and warming temps with the new snow on crust.  Expect to see pinwheeling and some loose wet slides with the changes if we get snow with daytime highs in the upper 30's.

CURRENT CONDITIONS Weather observations from the Region
0600 temperature: 26 deg. F.
Max. temperature in the last 24 hours: 33 deg. F.
Average wind direction during the last 24 hours: 250
Average wind speed during the last 24 hours: 0-5 mph
Maximum wind gust in the last 24 hours: mph
New snowfall in the last 24 hours: 1 inches
Total snow depth: 107 inches
weather

Below freezing temperatures with a warmer day ahead with highs in the upper 30s in the day Friday and Saturday and up to 6 inches of snow forecasted in the next 24 hours.  Winds are expected to be out of the SW 7-15 with gusts up to 23 tonight.  Sunday will be more calm and cloudy.  

Disclaimer

Avalanche conditions change for better or worse continually. Backcountry travelers should be prepared to assess current conditions for themselves, plan their routes of travel accordingly, and never travel alone. Backcountry travelers can reduce their exposure to avalanche hazards by utilizing timbered trails and ridge routes and by avoiding open and exposed terrain with slope angles of 30 degrees or more. Backcountry travelers should carry the necessary avalanche rescue equipment such as a shovel, avalanche probe or probe ski poles, a rescue beacon and a well-equipped first aid kit.  For a recorded version of the Avalanche Advisory call (208)765-7323.

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