Isolated instablity (cracking and whumpfing) on Silver Peak.
Cabin Creek, Deep Creek, or Pole Creek Area
Date and time of observation:
Wed, 12/27/2017 - 11:00
United States39° 13' 28.3728" N, 120° 14' 26.5272" W
Whumphing noises, shooting cracks, or collapsing
Observation made by: Forecaster