Loose Wet
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
With another mild night leading into a warm day with sunshine, you still need to think about wet snow avalanches. You're unlikely to see natural wet loose avalanches several days into a warm-up, but you may trigger a wet loose avalanche on very steep sunny slopes. As the above treeline winds increase during the day, the greatest risk will move down the mountain into mid and lower elevations. Wet loose avalanches may become large and powerful where they run far and entrain wet snow.
Pay attention to pinwheels, rollerballs, and wet or sticky snow 6" deep such as those observed here. If you encounter these conditions, seek shadier slopes or move to lower angle terrain. Don't let a wet snow avalanche catch you off guard above terrain traps like cliffs bands and creek beds.
Cornices may be weak and ready to fail after several days of warm temperatures. Avoid going underneath them and give them a wide buffer along ridgelines. A large cornice failure could wake up deeper instabilities on the slope below.
Ex: A small wet loose avalanche triggered by a skier on a steep south slope midday. Note the slightly lower angle terrain to the left that did not slide.