The earthquake occurred on a Saturday night at 23:07 JST (14:07 UTC).[4] It had a maximum JMA intensity of Shindo 6+.[5] It was followed by multiple aftershocks within less than an hour, with the strongest being a magnitude 5.3.[6] The earthquake has been considered an aftershock of the 2011 Tōhoku earthquake which occurred almost ten years before this earthquake.[7]