In California, Mammoth Mountain confirmed Saturday in a social media post that a member of the ski patrol there died from injuries sustained in an avalanche that occurred last week. Officials said Claire Murphy was one of two ski patrol staffers who were caught in a slide during avalanche mitigation work being done the morning of Feb. 14.

Avalanches are claiming lives across the western U.S. Authorities in Colorado said one slide was triggered by a skier in a steep area.