Donate to the 2024 Spring Campaign to help rebuild the UAC website.

Avalanche: Spring Hollow

Observer Name
David Rosenberg
Observation Date
Thursday, April 10, 2014
Avalanche Date
Thursday, April 10, 2014
Region
Logan » Logan River » Spring Hollow
Location Name or Route
Spring Hollow - Rock Slide
Elevation
8,400'
Aspect
Northwest
Trigger
Natural
Avalanche Type
Wet Loose
Avalanche Problem
Wet Snow
Weak Layer
New Snow/Old Snow Interface
Depth
12"
Width
500'
Vertical
900'
Comments
Large natural wet slide ran from very near the top of the Spring Hollow rock slide just below the upper cliffs all the way to the bottom. At the bottom, it spread out and covered half (climber's left side) of rock slide area. Not sure of the timing, but the bed looked fairly fresh and like it had not yet been subjected to multiple melt/freezes. Debris pile several feet deep, very wide and long. The slide ran on the April snow/March snow interface. Both layers are very wet and saturated, pole plants often went several feet into the snow. Lots of roller ball action on the climbers right side of the slide area that did not avalanche. Also triggered several zipper collapses that ran out 20 to 30 feet in the saturated surface snow on low angle NW facing slopes between 7400 and 8200 ft. All the surface snow on high elevation (8200 to 8900 ft) W, NW, and N aspects is super saturated but still bonding well to the old snow. Snow on high elevation NE and E aspects was starting to radial refreeze at 7:30 pm after losing the sun.
Coordinates