In fact, overnight Monday and into early Tuesday morning particles from it reached Earth, providing people with a beautiful northern lights show. The northern lights as seen looking eastward from just east of Penzance, Sask., at 1:21 a.m. local time Tuesday morning. The northern lights are caused by charged particles that travel along the solar wind and interact with different molecules in our atmosphere. #iawx #Iowa #aurora #northernlights #AuroraBorealis pic.twitter.com/2XT6oJ8Kpz —@smithweathergalThe Northern Lights are dancing over Prince Albert tonight. For cities like Edmonton, Calgary and Winnipeg, a K index of 4 (or even lower sometimes) means you'll likely be able to see the northern lights.

Source: CBC News May 14, 2019 21:27 UTC