Overview
- Observed tsunami waves reached 20–70 cm after the offshore late-night quake near Aomori, and earlier warnings of surges up to 3 meters were downgraded then lifted.
- At least 39 people were reported injured with no deaths, and around 90,000 residents were evacuated as inspections and damage assessments continued.
- The Japan Meteorological Agency issued its “Off the Coast of Hokkaido and Sanriku Subsequent Earthquake Advisory,” citing a relatively higher one-week chance of an Mw8+ trench event based on historical statistics of about 1 in 100.
- Prime Minister Sanae Takaichi activated an emergency task force and urged residents to review evacuation routes, secure heavy furniture, keep emergency kits ready, and stay alert for strong aftershocks.
- Rail services, including segments of the Tohoku Shinkansen, were suspended for checks, hundreds of homes briefly lost power, and plant operators reported no abnormalities at nuclear facilities.