A series of power outages across the continent that occurred on April 21 may have been caused by a geomagnetic storm. Coordinated cyberattacks were initially blamed for the events, although a fire caused by an overloaded circuit breaker in one of the major outages ruled out that theory. However, it is possible that a geomagnetic storm may have caused the near-simultaneous outages, as there had been an ongoing solar storm at the time.
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