On Thursday, Feb 11, snowmobilers remotely triggered two large avalanche in the Portal Creek area.
From obs: "Broke on lookers right crown first then triggered second slide to lookers left (rocks everywhere). Broke on depth hoar on both slides north facing aspects. Nobody was caught."
Location
Portal Creek
Avalanche Details: Remotely triggered avalanches in Portal Creek
Northern Gallatin, 2021-02-12