Avalanche: Goal Post 3/10/2010

Observer Name:

Mark Fels, Stanley Edwards

Observation Date:

03/10/2010

Occurrence Date:

03/10/2010

Occurrence Time:

12:30pm

Region:

Goal Post
Goal Post
Logan Dry Canyon
Logan

Location

41° 42' 36.7704" N, 111° 43' 59.1708" W

Avalanche Characteristics

Elevation:

9100'

Aspect:

West

Northwest

Slope Angle:

Alpha Angle:

Trigger:

Skier

Trigger: additional info:

Unintentionally Triggered

Remotely Triggered

Sympathetic Release

Avalanche Type:

Hard Slab

Weak Layer:

Facets

Depth (avg):

Depth Range:

18" to

Width:

250'

Width Range:

50' to

250'

Vertical:

1250'

Snow Profile

Snow Profile Comments:

The initial deep release was on a deeply buried 1mm facet layer... The slide sympathetic released a broad pocket in upper Goal Post running on February SH...... The slides joined in path and ran around 1200' into the flats above Little Mountain.

The party did not experience any collapses en route up Logan Dry that morning....

General Comments

We remotely triggered a fairly large (hard slab) slide at the ridge above goal post. (9100')

The initial slide sympathetically triggered the narrow slide path west of goal post, that

slid full length (1200').

The ridge was wind loaded. The slide quite large, and complicated.

As debris dropped into the trees, it triggered a few pockets of the

surface hoar layer.

The crown was large 3-4 feet in places.

Video 1:

General Comments 2

Video 2:

General Comments 3

General Comments 4

Toby Weed: I noticed skin tracks on top of intact slab chunks near the crown on the east flank of the avalanche. It appears as though the triggering party crossed a little ways out onto the slope that later avalanched while ascending....

Although no one got caught in this, we should remember it as a close call since it easily could have caught and killed the two skiers involved......

Javascript is required to view this map.