The current avalanche danger is Moderate in the west central Montana backcountry on steep slopes(>35 Degrees).  Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.

Good morning, this is Travis Craft with the West Central Montana Avalanche Center’s avalanche advisory for February 13, 2016. This danger rating does not apply to operating ski areas, expires at midnight tonight and is the sole responsibility of the U.S. Forest Service.

Weather and Snowpack

Temperatures are below freezing in all mountain locations.  Winds are 26 mph with gusts of 40 mph out of the WNW.  The advisory area received 1 to 3 new inches of snow in the last 24 hours.

Steve and I toured in the Rattlesnake yesterday.  Brian was in the Bitterroots for the last 3 days.  We all found similar conditions.  The snow surface was wet and we saw many wet loose avalanches.  With the temperatures dropping this morning the snow surface will refreeze.  The snow line is around 4000 ft.  We are currently receiving snow in the mountains and have high winds.  The question to ask today is, how is the new snow bonding to the old snow surface?

The main problem today will be loose dry avalanches.  These are usually not a problem unless they take you into a terrain trap (cliff, gully, or tree).

The second problem are wind slabs.  As the region accumulates more snow look for active transport by the wind on leeward slopes.

 

Weather and Avalanche Outlook

A cold front entered our area and is dropping the snow level to 4000 ft.  This weather pattern will bring with it moderate snow bursts with high winds.  This system will move out of area tonight and be replaced by a more powerful one.  The new system will bring the possibility of heavy snow and strong winds.  By Monday the snow level is expected to rise to 6000 ft.  With these conditions the avalanche danger will increase.  Conditions can change rapidly while in the backcountry, pay attention to red flags (shooting cracks, recent avalanche activity, and sudden collapses).

Ski and ride safe.  I will issue the next advisory on Tuesday.