A local snowmobiler is dead after a Saturday morning avalanche in Southeast Idaho. Authorities said Allen Foss, 48, of Preston, died in the avalanche in the area of Sherman Peak between Grace and Montpelier. The incident prompted the Bear Lake County Sheriffâs Office to issue a press release Saturday night warning the public about the very hazardous avalanche conditions that currently exist in Southeast Idaho. × Advertisement The press release stated: âThe Bear Lake County Sheriffâs Office would like to emphasize that backcountry conditions are extremely dangerous at this time. With the recent heavy snowfall and existing snow conditions, avalanche danger is high. Use extreme caution while recreating, do not go alone, and carry emergency/rescue equipment including avalanche beacons.â