We checked the same slope on Mt Stewart again today, right next to our tests of two days ago, to see how the weak layers might be strengthening. We found that the mild ongoing thaw has wetted the top 3 to 4 cm on even the north facing slopes, making silky corn snow on a firm edgeable base, and that sunnier aspects and lower elevations have settled a bit so the snow is easier to stay on top of and turn on, at least on fat skis.

Our block tests all fractured after multiple hard jumps on a 39° slope on the principal weak layer, the same layer as two days ago, unrimed stellar crystals now moist rounds at 75 - 82 cm, 28 - 35 cm below the surface. We had results of RB6 Q2, CAK6 Q2, and AK6 Q3, one step stronger on the AK Blocks and the same as two days ago on the Rutschblock. These results indicate ongoing strengthening of the weak layers, and the lack of any signs of instability bears this out.

However, the glide cracks in upper Fish Creek are becoming very active. We only noted one small possible release, but many cracks are opening rapidly now.

Stay clear of glide crack areas, watch any rapid thaw or heavy rain, and watch the bond to any new snow. As the snowpack begins to wet out, it is likely to go through a period of instability before it settles into a late spring snowpack.

Rapid change may still lead to slab avalanche cycles. With warming, cornices are likely to drop and trigger slides too.

Our staff will be traveling to American Avalanche Association meetings for week, so this will be the last post until we return and have a chance to get out again.