Event Brief
Magnitude 6.3 earthquake hits northern Japan
Filed: May 15, 2026 at 8:08 AM ET
Summary: A magnitude 6.3 earthquake struck off the coast of Miyagi prefecture, and no tsunami warning was issued.
WHO: Japan Meteorological Agency
WHAT: A magnitude 6.3 earthquake struck off the coast of Miyagi prefecture; no tsunami warning was issued.
WHEN: May 15, 2026 at 7:38 AM ET
WHERE: Miyagi prefecture, Japan
WHY: No tsunami warning was issued.
ℹ️ This event is analyzed using pattern arcs, velocity indicators, and source analysis in our MI Console.
📋 This story has 2 earlier reports
🔍 11 sources analyzed
Know more. Read less.
The BriefBrief follows the story, so you don't have to read every article. See what happened, how it changed, and where it came from, all in one place.
Same format. Every time.
See how stories unfold →