Avalanche: Seward

Location: Eastern Kenai Peninsula

Date:

November 16, 2021 3:20pm

Observer:

Graham Predeger

Route & General Observations

Flight from Anchorage to Moose Pass area. Landed Madson mountain (5300’). Then bumped south to Lost Lake wx station for assessment/ repair. We were able to get data transfer working again though anemometer still needs repair. So no wind data until Chugach Avy staff returns via snowmachine.

Flew the ARR corridor north from Moose Pass over Grandview, Spencer Lake and Squirrel Flats. Lots of glide cracks/ avalanches region-wide. Some looked to have released recently (during cold snap).

Avalanche Details

If this is an avalanche observation, click yes below and fill in the form as best as you can. If people were involved, please provide details.

Trigger	Natural	Remote Trigger	No
Avalanche Type	Glide	Aspect	Unknown
Elevation	unknown	Slope Angle	unknown
Crown Depth	unknown	Width	unknown
Vertical Run	unknown

Avalanche Details

Several glide avalanches observed — Turnagain Arm, Palmer Cr., Summit Lake, Crescent Lake Grandview and places in between.

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

Recent glide avalanches

Weather & Snow Characteristics

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

Weather

Single digits In Valley bottoms. Mid teens on ridge tops. Winds were light and variable, even at 5,000’! Plenty of sun, some patchy valley fog.

Snow surface

Snow surface was soft, even on notoriously wind-hammered ridges. 120cm total snowpack at 5,300’ on Madson mountain. Minimal wind effect observed on the majority of slopes we flew over…. Winds are coming though!

Snowpack

No snowpack tests today.

Photos & Video

Please upload photos below. Maximum of 5 megabytes per image. Click here for help on resizing images. If you are having trouble uploading please email images separately to staff.