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

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.

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).