Apex Avalanches Clarification

Avalanche

Run Length

1000

Slab Width

200

Trigger Type

natural

Wind Exposure

leeSlope

Avalanche Size

3.5

Slab Thickness

150

Start Zone Aspect

NE

Start Zone Incline

45

Avalanche Character

deepPersistentSlab

Crust Near Weak Layer

1

Number Of Avalanches

1

Start Zone Elevation

2130

Runout Zone Elevation

1850

Weak Layer Burial Date

2019-12-24T00:14:17.000Z

Weak Layer Crystal Type

depthHoar

Start Zone Elevation Band

tln

Avalanche Occurrence Datetime

2020-02-08T09:40:00

There is confusion regarding the location of this avy. It was not in the Powder 8 bowl on Apex Proper. The start zone is below point 2163m on the ridge south of Apex Proper (across the valley south of Powder 8 bowl), sometimes referred to as Ron’s Ridge. The track was down the north facing slopes on a run referred to as One Skin. The Avy cleared out a large amount of mature timber and left 10+ metres of debris at the common skin up point for skiers or congregation point for sleds, and ran for a further 2-300m past that point over another hill and down into a forested meadow. This slope also slid naturally on 23 Dec 2019 at 11 am but only ran 3/4 length on that day. The end of the runout is considerably north of the furthest run in recent memory. Depth hoar on scree in start zone. Wind change to S-SW flow on Friday evening from predominantly NW flow for 4 days, then switch back to NW flow on Saturday. 150 cms of snowfall in previous week.