A geomagnetic storm on October 11 caused the Northern Lights, or Aurora Borealis, to be seen as far south as Virginia. Here are some shots from around Montana and the region.
Northern lights at GNP
Northern Lights show
Northern Lights over Canada
The direct hit from a CME sparked some spectacular #AuroraBorealis last night over central Canadian Prairies. #NorthernLights were visible from 0300 UTC onwards. I took these from west of #saskatoon #Saskatchewan. #ShareYourWeather #stormhour pic.twitter.com/xbRswZAQqn— Gunjan Sinha PhD (@gunjansinha2017) October 12, 2021