The geomagnetic storm was classified G4, the second-highest possible degree – the last on such a scale happened in March, when auroras were seen as far south as New Mexico…
The lights were seen in various parts of Europe and North America..
Massachusetts had particularly amazing imagery posted online. .
Spaceweather.com reports there was a “moderately strong blackout of shortwave and low-frequency radio signals over North America,” and that the Earth’s poles were experiencing a deeper blackout.