April 6, 2000 - Time 23:15 - 23:35 UT. - Western Europe & North American View

A much smaller geomagnetic storm event occurred on April 6-7, 2000. This storm caused the largest GIC on a power grid ever to be recorded (over 300 Amps of neutral current) in Southern Sweden. As shown, even though this storm is much smaller than the March 1989 storms or the July 15, 2000 storm animations as shown, locally severe disturbances can still result. Numerous problems were also reported across North America, though this storm was very much smaller than the March 1989 Superstorm. The peak intensity of this disturbance was still approximately only a third of the intensity of the March 1989 disturbance, suggesting that much larger GIC’s would have been measured, if there had been measurement instruments in place back in 1989.