THIS AVALANCHE ADVISORY EXPIRED ON March 14, 2018 @ 6:21 am
Avalanche Advisory published on March 13, 2018 @ 6:21 am
Issued by Jeff Thompson - Idaho Panhandle Avalanche Center

Selkirks/Cabinets

bottom line

The snowpack is going through a big change right now.  Spring is here...at least for a couple days. The warm temperatures have decreased the stability in the upper portions of the snowpack. We'll hit the climax of this warm weather today (possibly 50 degrees at 5000').  Natural avalanches will be possible today and human triggered avalanches likely. Make wise travel choices today and stay away from solar aspects especially under rock outcroppings.    

How to read the advisory

Selkirks/Cabinets

How to read the advisory

The snowpack is going through a big change right now.  Spring is here...at least for a couple days. The warm temperatures have decreased the stability in the upper portions of the snowpack. We'll hit the climax of this warm weather today (possibly 50 degrees at 5000').  Natural avalanches will be possible today and human triggered avalanches likely. Make wise travel choices today and stay away from solar aspects especially under rock outcroppings.    

3. Considerable

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Above Treeline
Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding and conservative decision-making essential.

2. Moderate

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Near Treeline
Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.

1. Low

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Below Treeline
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
    Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding and conservative decision-making essential.
Avalanche Problem 1: Wet Slab
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With a high of 50 degrees today, all aspects will heat up and be unstable. Have a heightened awareness on solar aspects (E-N-W) but it will be warm enough today that I'm not trusting N faces either.  Today is a good dat to enjoy some sunshine but stay off of avalanche terrain, unless you can get on it before the sun gets to it. Once the sun is on an aspect, consider it to late. Temperatures are forecasted to cool off Wednesday- Friday which will be a much better time to think about getting into avalanche terrain. 

Avalanche Problem 2: Persistent Slab
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The middle of the snowpack is still cold and winter-like. The possibility of triggering a buried persistent layer still exist. The buried weak layers that we've been monitoring aren't to reactive but still need to be part of the discussion. If we see significant surface melting in the future we could see free flowing water move along these weak layers increasing their instability.

Weather and CURRENT CONDITIONS
weather summary

Hot today! Look for a cool off after today. Enjoy the sunshine!

Weather observations from the Region
0600 temperature: 35 deg. F.
Max. temperature in the last 24 hours: 48 deg. F.
Average wind direction during the last 24 hours: calm
Average wind speed during the last 24 hours: 0-5 mph
Maximum wind gust in the last 24 hours: 12 mph
New snowfall in the last 24 hours: 0 inches
Total snow depth: 130 inches
Two-Day Mountain Weather Forecast Produced in partnership with the Spokane NWS
For 2000 ft. to 4000 ft.
Tuesday Tuesday Night Wednesday
Weather: Sun cloudy showers
Temperatures: 55 deg. F. 37 deg. F. 42 deg. F.
Wind Direction: NE NE S
Wind Speed: 8-10 6-10 6-10
Expected snowfall: 0 in. 0 in. 0 in.
For 4000 ft. to 6000 ft.
Tuesday Tuesday Night Wednesday
Weather: Sun Cloudy/Rain Rain/Snow
Temperatures: 50 deg. F. 35 deg. F. 38 deg. F.
Wind Direction: E E SW
Wind Speed: 10-12 5-13 6-9
Expected snowfall: 0 in. 0 in. >.5'' in.
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.