Spaceweather.com reports that on January 6, unexpected electrical currents were detected in the soil of northern Norway starting at around 1930 UTC.
“It seemed to be some kind of shockwave,” said Rob Stammes, who monitors ground currents at the Polarlightcenter geophysical observatory in Lofoten. “My instruments detected a sudden, strong variation in both ground currents and our local magnetic f…
Source: ARRL News
Link: Norway Experiences Unexpected Ground Current “Shockwave”