Avalanche Conditions

9 photos

Multiple Climax Avalanche Events

Rogers Pass Backcountry

Avalanche Conditions

The Jan 26th Persistent Weak layer has reached its threshold.

There have been several reports of very large (sz 3.5-4.0) natural avalanches occuring in the Asulkan and Connaught drainages today.
Three climax avalanche events were witnessed in the Asulkan Valley at 10:20, originating from Rampart Peak and Mt Abbott, running full path into valley bottom and into the trees on the opposite side of the valley. The debris filled the creek and was reported to be 10m+ deep, burying the skin track.
Two other climax avalanches were observed from the Connaught Valley at 13:00; Cheops North 4 and Grizzly Slide Path. Cheops North 4 ran full path into the creek, up the opposite side of the valley, taking out a swath of trees, burying the skin track, and continuing down the valley. Grizzly slide path also ran full-path, into the creek and up the opposite side of the valley, burying the skin track with debris piles 5-8m deep.

In the past 48 hours the Fidelity Weather Station received ~65mm of precipitation with sustained 80km/hr SW winds, gusting to 140km/hr at the MacDonald West Shoulder Weather Station. The Jan 26th Persistent Weak layer is down ~100-150cm.

The avalanche hazard was rated as High (natural avalanches likely, human-triggered avalanches very likely), and all Winter Permit Areas were closed.
Natural avalanche activity will gradually taper off but human triggering of these very large avalanches will remain likely.

Glacier National Park Mountain Safety

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These observations and opinions are those of the person who submitted them. The ACMG and its members take no responsibility for errors, omissions, or lapses in continuity. Conditions differ greatly over time and space due to the variable nature of mountain weather and terrain. Application of this information provides no guarantee of increased safety. Do not use the Mountain Conditions Report as the sole factor in planning trips or making decisions in the field.