Colorado: Avalanche warnings, high wind watch

Posted on February 20, 2012 by Bob Berwyn

Backcountry travel not recommended in north San Juans, winds could hamper traffic along the Continental Divide Tuesday and Wednesday

The backcountry avalanche danger is at the high end of the scale across the Colorado backcountry, with a warning for the north San Juans.

By Summit Voice

SUMMIT COUNTY — Colorado snow totals were all over the map with the most recent storm, ranging from 1 to 2 inches along the Continental Divide to a 27-inch blast at Steamboat, 19 inches at Powderhorn and 14 inches at Wolf Creek. The full report from Colorado Ski Country USA is online here.

Winds shifting to a northwesterly direction could bring periods of snow to the northern and central mountains, with 4 to 8 inches possible by late in the week, along with a high wind watch starting Tuesday morning covering the mountains and foothills east and west of the Continental Divide in the northern part of the state.

As forecast by the Colorado Avalanche Information Center, the storm delivered to those areas favored by a southwest flow, with good flows into the Aspen zone. As a result of the heavy snows to the north and south, the CAIC has issued an avalanche warning for the north San Juan zone, where travel in slide-prone backcountry terrain is not recommended. The warming is in effect through Tuesday (Feb. 21), 10 a.m. (more…)

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Colorado: Avalanche warning in North San Juans

Posted on February 12, 2012 by Bob Berwyn

Avalanche warning in the north San Juans.

SUMMIT COUNTY — With anywhere from 5 to 9 inches of new snow piling atop a tender snowpack riddled with slabs, crusts and faceted crystals, the Colorado Avalanche Information Center has issued an avalanche warning for the North San Juans.

Natural avalanches are likely Sunday night into Monday morning, and backcountry travelers will face hazardous conditions in many areas. Backcountry skiers Saturday triggered a slide remotely south of Telluride. According to the CAIC, the group was below treeline on low angle terrain, where they collapsed a small slope which propogated nearly 1,000 feet away to trigger a slide that was 400 feet wide and ran 400 vertical feet.

Snow was reported across Colorado Sunday afternoon.

Several other slides were reported from the San Juans. Check out the CAIC website for more details. Up to 16 inches of snow could fall in the San Juans before the storm tapers off Monday morning, and with strong southwest winds, big and dangerous slabs will build up on leeward slopes near and above treeline.

“Triggering a storm slab or wind slab will stress the underlying weak snowpack increasing the likelihood of a larger and destructive avalanche,” the CAIC forecasters wrote in the warning.

Snow started falling in the northwest mountains Sunday afternoon, where accumulations will not be as great as in the San Juans. The storm will start to move east Monday, with drying skies and continued mild temperatures before another round of snowfall kicks in for the northern mountains Tuesday night.

Filed under: avalanches, climate and weather, Colorado, Snow and weather, Summit County snow and weather | Tagged: , , , , , , | Leave a Comment »

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