A ‘Ground Current Event’ in Norway

On Monday, Jan. 6th, strong electrical currents abruptly surged through the ground in northern Norway, kicking off an hours-long episode of bright auroras and magnetic unrest.

Usually, this kind of event happens in the aftermath of a strong solar flare or a CME impact, but the sun was totally quiet.

Visit today’s edition of Spaceweather.com to see the data and find out what happened.