[6] Over 3 million households in the area were left without power, and several nuclear plants suffered minor malfunctions.

[1] Although the quake was located several miles offshore, moderate to very strong shaking was reported as far inland as Tokyo, about 333 km (207 mi) from the epicentre.

[11] Radioactive water consequently leaked out of spent fuel pools at three of its reactors, though no change in the radiation levels outside the plant was reported.

[10] Four people were reported dead as a result of the earthquake, including an elderly woman in Yamagata Prefecture who lost power to her medical ventilator.

[13] The Nikkei index fell sharply at the close of trading, but rebounded the next day when reports of limited damage were confirmed.