THIS AVALANCHE ADVISORY EXPIRED ON March 25, 2017 @ 7:08 am
Avalanche Advisory published on March 24, 2017 @ 7:08 am
Issued by Eric Morgan - Idaho Panhandle Avalanche Center

St. Regis Basin/Silver Valley

bottom line

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.

St. Regis Basin/Silver Valley

How to read the advisory

2. Moderate

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Above Treeline

1. Low

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Near Treeline

1. Low

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Below Treeline

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
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As temperatures rise today be alert for loose wet slides.  If is starts to rain stay off steep terrain. hey that rhymes.  New snow will be heavy and wet so that could add to the problem if enough new snow builds up.  Wet slides could accelerate quickly on steep, firm surfaces.

Avalanche Problem 2: Storm Slab
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New snow is forecast for the next 24 hours or so.  That will come in with westerly winds so watch for lee aspects to be loaded.  Check the bond of windloaded snow to any existing ice crusts.  These slabs may not be deep but could be reactive especially when temps are on the rise and they may be enough to get you moving downhill.

recent observations

Melissa and Jeff were off the back side of Silver yesterday and found a stable pack.  Layers gain hardness with depth and they found no major weak bond that concerned them.  No observations of recent slides.  The pack was solid from night-time freezing and they did have some concerns for rising temps and wet snowfall. 

CURRENT CONDITIONS Weather observations from the Region
0600 temperature: 28 deg. F.
Max. temperature in the last 24 hours: 29 deg. F.
Average wind direction during the last 24 hours: SSW
Average wind speed during the last 24 hours: 7 mph
Maximum wind gust in the last 24 hours: 20 mph
New snowfall in the last 24 hours: 0 inches
Total snow depth: 54 inches
weather

A 100% chance of snow today with 1-3 inches expected.  Temperatures at 6,000 feet will rice to 38 and winds will be out of the south at 14-16mph with gusts to 24.  One to three inches tonight with temps at 30 and westerly winds gusting to 26.  Saturday snow tapers off with continued SW winds, temps in the mid 30s and Sunday looks to be mild with mostly cloudy skies.

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.