Whistler Peak Slackcountry size 2.5+ slide

Avalanche date/time

Tuesday, December 22, 2020 at 12:00

Estimated occurrence time of avalanche

From 24 to 48 hours ago

Number of avalanches in this report

1

The size of avalanche

2.5

Slab thickness

65cm

Slab width

40m

Run length

650m

Avalanche Character

• Deep persistent slab

Trigger type

Skier

Trigger subtype

Intentional

Start zone aspect

• S

Start zone elevation band

• Alpine

Vegetation cover

Open slope

Dropped off Matthew's Traverse into slack country to connect back with Peak to Creek. Snow was wind affected and warming significantly in the setting sun (2:45pm). No signs of instability but we chose a conservative and high route to exit the area quickly.

We skied up and over a ridge and we're faced with a 600-700m long avalanche debris field with consistent width of ~40m. Crown varied from 40-70cm across the start zone. Another skier called it in to patrol and they said it was triggered by a patroller ski cut.

Debris covered many of the tracks from earlier that day