ARLA/CLUSTER: Forte corrente eléctrica surge no solo da Noruega gerando auroras brilhantes e agitação magnética.

[João Costa > CT1FBF]

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.