Backcountry avalanche warning issued for much of Southcentral Alaska

High avalanche danger in the mountains around much of Southcentral Alaska prompted officials to issue a backcountry avalanche warning Saturday for areas from Anchorage to Seward.

The Chugach National Forest Avalanche Information Center said that a combination of heavy snowfall, strong winds and low-elevation rain Saturday “will overload a weak snowpack, creating widespread areas of unstable snow.”

The warning is in effect from 6 a.m. Saturday to 6 a.m. Sunday.

Human-triggered and natural slides are likely, and avalanche debris may run long distances into the bottoms of valleys and other lower-angle terrain, the center said.

In Saturday’s avalanche forecast, which noted high avalanche danger at all elevations in the Turnagain Pass and Girdwood areas, the center said avalanches were likely to fail on weak layers about 1.5 to 3 feet deep.

Forecasters recommended that people avoid traveling in avalanche terrain, staying clear of slopes steeper than 30 degrees.

“Avalanche conditions will remain very dangerous immediately after the snow finishes,” the avalanche center said in its warning.

The center also said conditions may cause roofs to shed snow, and urged that people watch for overhead hazards, use care in choosing where to park vehicles and watch out for children and pets.

Areas covered under the backcountry avalanche warning include the mountains around Anchorage, Girdwood, Portage, Turnagain Pass, Lost Lake and Seward.

Farther north, the Hatcher Pass Avalanche Center in its forecast Saturday said danger was considerable at upper elevations and moderate at middle elevations.

Snowfall in Anchorage and Mat-Su

A winter weather advisory remained in effect until 9 a.m. Sunday from Anchorage up to the lower Matanuska Valley, including the cities of Eagle River, Palmer and Wasilla.

The National Weather Service said total accumulations of 4 to 8 inches of snow were possible, with localized areas potentially receiving up to a foot of snow.

The snowfall was expected to peak Saturday evening before tapering off Sunday morning, the weather service said.