Experts say an avalanche that killed two Montana snowmobilers was triggered when two riders tried to dig out a third whose snowmobile was stuck.
The Missoulian reported Monday theWest Central Montana Avalanche Center released an analysis into the Jan. 1 avalanche that killed 24-year-old Jade Green and 26-year-old Lowell Grosvold. A third man survived the avalanche north of Seeley Lake.
The center's preliminary report released online says the avalanche began at 6,740 feet in elevation. The center had issued an avalanche warning that day after a storm deposited additional snow on unstable terrain.