Lawine

Avalanche: Dry Fork

Dave JarvisProvo
Auf der Karte ansehen

Avalanche

Slab Width
46 m
Trigger Type
Natural
Slab Thickness
152 cm
Start Zone Aspect
South
Start Zone Elevation
2835 m

There was a hard refreeze both Thursday morning and Friday morning. I headed up Friday to find a nice hard

slab most everywhere. I headed South at the Campground towards the road. Easy walking, following some

Coyote tracks, and some that looked like a Wolverine but smaller. I hit the road and continued for just

over a mile. Not much new on the North West flank of Provo Peak. Some scoured clear ridge, and buried

leeward lips. A couple of small cornices on top of the ridge west of the road.

It clouded up for the next few hours with a chill breeze. 32* to 34*, dandy.

Headed back to the campground area I noticed four slides up Dry fork. The largest was the first gully to the

North in Dry fork. There was a shorter 5' Crown fracture about 9300'. It swept the gully and partly up the sides.

It dropped to the South and made a turn toward the road. The last hundred yards it slid as a large pile of big

blocks and balls. Leaving 15' to 18' on the road then filling 150' or more of the deep gully west of the road.

The debris was over 90' wide. It will be tough to get a sled or snow bike across until it softens up.

In the next shallow draw to the East there was a damp sluff with a small pile of debris.

Further East there is a twofer. At the top of the ridge there is a large boulder. There was a release

just below it that split into two with each shallow avalanche following it's own course. They both

dropped into the Aspens.

These were all probably triggered by late morning solar warming. Tuesday or Wednesday.

I got a good look up Burnt Hollow. There were widespread shallow slides. Point releases and

rollers. Most of it was Westerly to Southwest aspects. Probably a lot of afternoon heat on Wednesday.

Most of the cornices to the East and on the NW ridges of Provo Peak are diminished or missing.

Much of the pack surface lower has what I assume is percolation matrix.

A steep slope Southwest of the campground has a pair of glide fractures opening up.