Avalanche: Hatcher Pass

Location: Independence Mine Bowl area & Microdot

Route & General Observations

Toured in the Independence Mine area, and up to 4300′ on Microdot. Although we observed mostly stable conditions in the areas we toured, pluming at ridge tops indicated that conditions might be very different at hight elevations.

Avalanche Details
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Trigger NaturalRemote Trigger Unknown
Avalanche Type Dry Loose SnowAspect Northeast
Elevation 4200ftSlope Angleunknown
Crown DepthunknownWidthunknown
Vertical Run 200ft  
Avalanche Details

Observed two recent Dry Loose avalanches (D1?) that had released naturally on very steep terrain, NE aspect into Martin Mine Gully. Poor vis made it hard to discern details.

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

Windy at ridge tops with pluming, especially at Hatch Peak. Fairly poor vis and flat light. No new snow during the day.

Snow surface

Unconsolidated new snow, made for great skiing.


Almost all snowpack test showed good structure, high strength, and we found no propagation in ECT test. All test were at elevations below 4300'. There was some indications of poor bonding between the Fridays new snow and the old snow surface. At a few wind scoured locations (HS=65 cm), the new snow was sitting on top of well developed fist-4F hard facets.