Tonight's Aurora Borealis Forecast Colorado & Northern Lights Alerts

This is the one. A flat, dark, unobstructed northern horizon stretches across roughly a hundred square miles of the northeast plains, and it stays the clear favorite in the Colorado chaser community for a reason. People score here again and again.

Insider tip. The grassland is a checkerboard of public land and private ranches. When a gate is marked with a pasture number, you can pull off and set up along the two-track roads, which is how chasers find their own private slice of horizon away from the crowd.

About ninety minutes northeast of the Front Range, Jackson Lake was the first Colorado state park to earn International Dark Sky certification, and on an active night the lake throws the aurora's reflection right back at you. It stays open year round, which makes it the reliable winter pick.

Insider tip. The park holds more than 250 campsites, but only a handful of prime northern shore spots give you clean, unobstructed water and sky, and those fill fast with RVs. Horizon purists often skip the campground and drive the extra stretch out to Pawnee for a cleaner view.

Just outside Fort Collins, Horsetooth earns its spot for water reflections and easy access. Pick a north shoreline pullout, because the Fort Collins light dome sits to the east and south and Loveland and Greeley bleed into the southern sky. The view north toward Wyoming stays relatively clean, so keep the city glow behind you and the dark horizon in front.

Way out on the dark northeast plains near Sterling, North Sterling pairs open water for reflections with almost no light pollution. The community has confirmed sightings here, and the darkness is the whole draw.

When the Boulder crowd wants a high alpine lake to mirror the lights, Brainard near Ward is the pick, but it demands planning. From mid June through early October you need a timed entry vehicle reservation booked ahead on Recreation.gov, and there is no cell signal near the gate to grab one on arrival. If an alert fires at nine on a July night and you never booked, the entrance station turns you away. The rest of the year the road sits gated and snowed in, so reaching the lake means a snowshoe or ski of several miles from the winter lot. Brainard rewards the chaser who already holds a summer reservation, not the one racing a sudden storm.

Down in the San Luis Valley, Great Sand Dunes is an International Dark Sky Park with some of the darkest skies in the state and a dune foreground unlike anywhere else. The Sangre de Cristo peaks rise close to the east and north, so they can clip the very bottom of the northern horizon depending on exactly where you stand. It is a long haul from the Front Range, but as a bucket-list backdrop for the aurora, nothing in Colorado touches it.