This is Mark Staples from the Gallatin National Forest Avalanche Center with an early season Avalanche Information Bulletin issued at 8 a.m. on Wednesday, October 28.
Overnight up to 2ft of snow has fallen in the Bridger Range, 12-16 inches near Big Sky, and 4-5 inches in the mountains near Cooke City and West Yellowstone. Northerly winds have been blowing 12-15 mph with gusts up to 38 mph. October has been especially cold and snowy with preliminary climate data indicating Bozeman may experience its coldest October on record beating 1969 for the coldest daily average temperature. Precipitation has been above normal with MSU recording an additional Â½ inch of water above the monthly average.
Snowpack and Avalanche Discussion:
With such cold weather and abundant snowfall, avalanches are a very real possibility. A human triggered avalanche occurred on October 6th in the Bridger Range on Sacajawea near the summer trail breaking on the interface from the October 1st storm. On Saturday, October 24th a group of four skiers was caught in an avalanche near Trapper Peak south of Missoula. The West Central Montana Avalanche Center collected an excellent report from one of the skiers HERE.
Read the rest of the Advisory HERE.