From email: "Observed natural deep slab probably happened overnight with the strong winds... snowpack in the area was about 3-5’ deep mostly 4F with 20+cm of F depth hoar at the bottom... obviously not strong enough to support the wind-load." Photo: T Thorn
Location
Advisory Year
Avalanche Details: Natural Avalanche, Northern Madison Range
Forecast link: GNFAC Avalanche Forecast for Tue Feb 23, 2021
Northern Madison, 2021-02-21
Forecast link: GNFAC Avalanche Forecast for Tue Feb 23, 2021