Ashman Peak avalanche
AvalancheBryan Mitchell · Feb 18, 2020 · Microwave-Sinclair
Avalanche
- Run Length
- 800
- Slab Width
- 300
- Trigger Type
- natural
- Slab Thickness
- 100
- Start Zone Aspect
- E
- Start Zone Incline
- 55
- Avalanche Character
- persistentSlab, windSlab
- Number Of Avalanches
- 2-5
- Start Zone Elevation
- 1650
- Runout Zone Elevation
- 1317
- Avalanche Observation
- moreThan48hrsAgo
- Start Zone Elevation Band
- alp
- Avalanche Occurrence Datetime
- 2020-02-17T12:00:00
Observed a very large avalanche on a steep unsupported E face of Ashman Peak. about 300 x 300 m with crowns up to >100cm. Observation date was on Feb 18th. Likely failed a during wind event on the 17th. In the photo, one can see a series of smaller slabs that stepped down to a larger persistent layer propagating significantly. Ran to top of runout. Melt crust / facet combination was found at the bottom of snow pack on wind scoured N aspects of similar elevation within a few KM of this avalanche, hinting at the failure surface.