In England, magnetic fields at ground level have been shaking back and forth in response to the high-speed solar wind stream on Oct. 11th.
Look at the geomagnetic storm in action:
The plot shows the change in magnetic flux density in nanotesla occurring between readings every few minutes.
It’s always impressive to see the impact of a geomagnetic storm on magnetometers. The chart clearly shows the arrival of a high-speed solar wind stream on Oct. 11th. Magnetic unrest intensified over the following 24hrs to create a G1-class geomagnetic storm.
More activity is expected as the storm is predicted to reach G2 in the coming hours.