No upper limit for solar storm effects: research finds impacts could be twice as severe (heise.de)

• No upper limit for atmospheric currents during solar storms
• Previous limit belief based on measurement inaccuracies
• Extreme storm impacts could be double previous estimates

"Research from Lancaster University using NASA satellite data reveals no upper limit for electric currents in Earth's atmosphere during solar storms. Previous assumptions of a limit were based on measurement inaccuracies. Extreme geomagnetic storms could have twice the impact on satellites, communications, and power grids, according to the study published in Nature."