Wet Loose Avalanches on Donner Summit

We were in Johnson Canyon today looking for some good spring snow conditions.  Temperatures were warm when we arrived at the trailhead mid morning with partial light cloud cover and plenty of sun breaks.  The overnight refreeze was marginal in this area with shin deep boot pen, although mostly ski supportable conditions existed in the morning and into the early afternoon.  We noticed wet loose avalanche activity start on the north side of Donner Peak and some neighboring terrain sometime around 12-1pm.  More locally, we only experienced small roller ball activity in some isolated areas.  Some good spring snow conditions existed throughout the morning at the right elevation and aspect with lots of slow, sticky, and deep wet snow in many other areas.