The 142nd and final avalanche advisory for the 2017/2018 season was published on April 22nd. Thank you to all who have supported the avalanche center through volunteer hours, field observations, and financial support.
Winds Slabs on Avi Gully "Munchkins"
Avi Gully "Munchkins"
Blackwood Canyon or Ward Canyon Area
Date and time of observation:
Wed, 12/06/2017 - 12:31
United States39° 9' 58.3344" N, 120° 13' 4.116" W
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
Quick tour to the top of Avi Gully today to look for wind slabs / overall coverage in area. Below 7500' less than 1 ft of snow existed with lots of exposure and obstacles.
Notable observation from today : small wind slabs existing on N / NE aspects. Ski cuts and test slopes produced several failures ranging in depth and width. One ski cut on a 32 degree slope triggered a 8 inch slab that was approximately 10 ft. Wide and ran for 75 ft.