Theodore Roosevelt National Park, North Dakota · aurora
Theodore Roosevelt National Park, North Dakota northern lights
The badlands of Theodore Roosevelt National Park keep skies dark enough that, as the NPS puts it, the aurora may occasionally appear over the buttes. It's not Alaska — but on a strong, clear, moonless night the lights can rise to the north, and Cottonwood Campground along the Little Missouri makes the base.
Best season
Dark, clear, new-moon nights (fall–winter); aurora is occasional
Where
Theodore Roosevelt National Park (NPS) badlands
Nearest RV base
Cottonwood Campground, South Unit (near Medora)
Watch it honestly
The NPS frames the aurora here as occasional — base your odds on a strong geomagnetic night, clear skies and a new moon. Check the NOAA SWPC 30-minute aurora forecast; do not expect it on any given night.
Plan with the official source (and the NOAA SWPC aurora forecast): NPS — Theodore Roosevelt NP lightscape .