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Avalanche: Girdwood

Location: Byron Glacier Trail

Date:
Observer:
Route & General Observations

Hiked the Byron Glacier Trail to the rock platform. There was a recent cornice fall (observed earlier in the week 4/12) that still looks fresh on the NW facing ridge and reached the valley floor. There remains several VERY LARGE cornices that extend along this ridge further back into Byron Valley and plenty of snow that can still avalanche up high. There is potential for avalanche activity including cornice fall to come close to the end of the established trail. Caution is advised on this trail and traveling beyond the rock platform is NOT RECOMMENDED. The SE facing slope nearest the trail is mostly free of snow and doesn’t pose much of a risk anymore.

*Witnessed a natural avalanche on a NW aspect near Byron Glacier around 3:30pm. Starting zone was out of site, but debris ran to the moraine near the valley floor.

Avalanche Details
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Trigger NaturalAvalanche Type Unknown
Aspect NorthwestElevationunknown
Slope AngleunknownCrown Depthunknown
WidthunknownVertical Rununknown
Avalanche Details

Could only see where the debris was flowing over a steep rocky cliff near the bottom of the Byron Glacier. Could not see the slope in which this avalanche started, but was on a Northwest aspect.

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Obvious signs of instability
Recent Avalanches?Yes
Collapsing (Whumphing)?No
Cracking (Shooting cracks)?No
Observer Comments

Warm day time temperatures (50F's) and rapid warming from the sun. A HOT DAY for April.

Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.
Weather

Sunny
Winds were calm on Byron trail
Temps = 52F
No precip

Photos & Video
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