Avalanche Forecast

Moderate

Control today had results, but not what we were expecting. Out of 6 shots, we had three sz1.5 slab avalanches. They were all windward aspects which contributed to their relatively small size.

This latest storm has left us with 40-50cm of snow. This is rapidly settling out for two reasons: the facets underneath are being crushed, and the new snow is settling within itself. Both of these are good things. So far we haven't seen a widespread cycle, and we probably won't. But, keep in mind, while those depth hoar and facet layers are being crushed, they are very sensitive to triggering. The other thing worth chatting about is the unusual wind pattern with this weather system. While cold isn't a stranger with arctic highs, sustained moderate winds are. Expect wind loading on all aspects. Slabs are out there, and they are still in the human triggering phase of their life. And finally, who could write a snowpack and not talk about the deep facets and depth hoar? Those layers are still there and probably not liking the new snow load. Don't assume anything has gotten better because it looks like winter.

The cold will continue for a few days yet. Tonight's low will be about -31 with a piddly 5 degree warm up tomorrow. The winds will be the real kicker. With moderate (42km at treeline) east winds expect wind chills of minus a million. Well, maybe not a million, but you get the idea. The good news? Skies will be clear and no snow in the near future.

More details can be found in the Mountain Weather Forecast.

• Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
• Be aware of the potential for surprisingly large avalanches due to deeply buried weak layers.
• Avoid shallow, rocky areas where the snowpack transitions from thick to thin.