Turnagain Pass Avalanche Forecast

Weak snow that has been buried for 3 weeks continues to lurk 1-2 feet below the surface.  This layer has gained significant strength in that time.  Bonding between the “late January” facets and overlying slabs has improved to the point where it has become difficult to trigger an avalanche on this layer.  Some intermediate weak layers can be found in isolated locations and are buried about 1 foot deep.  Slabs resting on these layers are also generally difficult to trigger.   Tests have been showing propagation potential on the decline, but it is still possible for an avalanche, if triggered, to propagate across portions of slopes.  

Despite these improving trends it is still important to treat steep and complex terrain with suspicion in the Alpine.  Today it will be important to follow good travel protocol.  Assess the terrain you are on and minimize your exposure accordingly.  Avoid trigger points on terrain over 35 degrees, travel one at a time on suspect slopes, use islands of safety and communicate your decisions and plans within your group.

Ridgetop winds have been in the 20-30 mph range since yesterday morning.  Very shallow stiff slabs may be encountered today on steep (40 degrees and over) leeward slopes.  These slabs will be small, around 4-6” deep and exist in small pockets.  While the volume of any wind slabs triggered will be low, it will be important to avoid them when travelling above terrain traps such as cliffs, gullies and trees.