The northern lights may be visible as far south as Idaho, New York and South Dakota following strong solar storm activity.

Sunset: 7 warming winter trips 2. You've never seen so much powder Low humidity and moderate temperatures give Big Sky its characteristic "cold smoke" powder (it's also the name of a local microbrew).

Aurora does not have to be directly overhead to be visible: it can be observed from more than 600 miles away if the conditions are right.