( CNN ) -- One person has died and another was trapped in a pair of avalanches in the Utah mountains Sunday afternoon , authorities said . One of the Utah avalanches , at Snowbird Ski Resort , buried one woman under 2 feet of snow . She later died . Heather Gross , 27 , died Sunday evening at a hospital in Salt Lake City from her injuries , Salt Lake County Sheriff 's Deputy Levi Hughes said . Gross , a county resident , had been buried under 2 feet of snow by an early-afternoon snowslide at Snowbird Ski Resort , Hughes said . Rescue teams found her about an hour after the avalanche , and she was flown to University of Utah hospital , where she died . A man who was with her at the time was not injured and reported the slide , Hughes said . A second avalanche occurred nearby in the backcountry area known as Lake Desolation , said Randy Doyle , a spokesman for the Big Cottonwood Canyon resorts nearby . He said the avalanche , which left at least one person trapped , was not within the resort .
NEW : Woman taken CNN hospital dies of her injuries . Woman was buried 2 feet of snow in avalanche at ski resort . Witness contacted authorities ; woman rescued evening . at least one person trapped after second avalanche near resort , officials say .