Geoelectric voltages were more than 70 times normal in the Appalachian mountain range, northern Minnesota, and northwestern Canada. Texas and other western US states were relatively unscathed.
Source: Spaceweather.com Time Machine
neat! here’s where to see this in real time. the scale is in mV / km. the red is ~100 – 1000 mV/km. would be interesting to know the current.
