A strong solar storm has also caused the aurora borealis to appear in the sky.
Earth has been hit by the strongest solar storm since 2003, says the US federal weather and ocean research organization NOAA.
Geomagnetic storms will probably continue throughout the weekend, NOAA says in the X service.
A strong solar storm has also caused the aurora borealis to appear in the sky.
A geomagnetic storm can cause intermittent disturbances to, for example, satellite positioning or, in extreme cases, problems with electricity distribution.
A powerful solar storm has brought down the power grid a few times in human history. In the spring of 1989, a fairly strong geomagnetic storm caused a nine-hour power outage in Canada. In the fall of 2003, such a storm brought down the electricity grid in Malmö, Sweden.
The news is updated.