Quick report
Toured in to the Jeff View hut from the Upper Three Creek SnoPark. Considerable inversion on Sunday, 3F in sisters and 22F at the hut. Snow that was not wind blown had a slight crust. Kept an eye out for a crown on Middle Sister as mentioned by the forecaster. There were numerous large (both wide and deep) avalanches at different elevations.
Avalanche
Numerous, possibly connected massive avalanches on the east side of Middle Sister.