A storm bringing more than 2 feet of snow to parts of Bridger-Teton National Forest last week is raising alarms about the risk of avalanches just as skiers begin entering the backcountry.

Forecasters at Bridger-Teton National Forest Avalanche Center elevated the slide danger to “considerable” at upper elevations. The Jackson Hole News and Guide reports  that more than 16 inches fell at Grand Targhee Ski Resort Thursday, with an additional 10 inches expected through the weekend.

Forecasters reported the first slide of the season ran Tuesday on Togwotee Pass.

The storm might set up ski areas well for their openings. Grand Targhee plans to open Friday and Jackson Hole Mountain Resort the day after. Snow King is shooting to open Dec. 10 but may re-evaluate.