Overview
- Friday’s aftershock off Aomori struck at 11:44 a.m. local time at roughly 20 km depth, with magnitude reported between 6.7 and 6.9 by JMA and USGS.
- A tsunami advisory for the Pacific coasts of Hokkaido, Aomori, Iwate and Miyagi was lifted within hours after small waves of about 20 cm were observed.
- Officials reported no major new damage or injuries from the aftershock, and nuclear regulators said inspections found no abnormalities at regional plants.
- The Dec. 8 M7.5 quake left dozens injured, produced small tsunami surges up to about 70 cm, and caused transport disruptions including rail suspensions and flight delays at New Chitose Airport.
- Authorities continue to urge residents to review evacuation routes and supplies for at least a week, as coverage spotlights gaps in multilingual disaster information for foreign visitors.