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North Dickey Creek
Location Name:
North Dickey Creek
Observation date:
Saturday, February 8, 2020 - 12:45
Is this an Avalanche Observation:
Yes
Observation made by:
Public
Tabs
Quick Observation
Spent the day up North Dicky Creek.
Skied south and south west aspects from 5000'-7200'.
Below freezing temps all day.
No wind at valley bottom, light winds in the mid elevations and moderate winds at the ridge tops. Localized ridge top winds were from a northerly direction thus loading was non typical, moderate snow transport.
1" plus an hour snow fall rate, between the morning hours and 4PM, storm total was 8+".
Previous storm snow accumulations seemed to favor the southern end of the Flathead Range. The 2/1 rain crust was buried up to 20"+ in non wind affected areas.
Several density layers in the top 14" of the snow pack. With the 2/5 freezing rain crust paper thin in the areas we traveled, buried 10" +/-.
We did find some soft slabs that we were able to intentionally trigger on unsupported convex slopes,35*+. These failed about 14" deep. Failing layers were either facets in a density layer change or the 2/5 freezing rain crust/facets. These were confined to mid elevations, 5700'- 6500', south west aspects that had received some wind, and or solar warming, something to help in the process in creating a soft slab.
Some of these soft slabs were big enough to knock you off your skis, but not bury you.
Surprisingly, skiing was good, much better than anticipated.
Thanks to the crew of six that caught up, and finished off the up track to the top.
Snowpack, Avalanche, Weather Images:
Avalanche Details
Avalanche Details:
Date and Time of Avalanche:
Saturday, February 8, 2020 - 12:00
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
New/old snow interface
More information or comments about the avalanche:
Trigger
Trigger:
skier
Trigger Modifier:
Intentionally Triggered
Terrain
Start Zone Slope Angle:
35
Aspect:
Southwest
Starting Elevation:
near-treeline
Size
Destructive Size:
D1 Relatively harmless to people.
Crown Height:
1 ft
Avalanche Location:
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