Event Brief
UPDATED Oct 28, 2026 at 7:04 PM ET
Oct 28, 2026 at 12:16 PM ET
M5.4 earthquake shakes Tokyo region
By The BriefBrief
A magnitude 5.4 earthquake struck northeastern Chiba Prefecture at a depth of 50 kilometers, shaking Tokyo and surrounding prefectures. It registered lower five on Japan’s seven-point seismic scale, and no tsunami warning was issued.
WHO: An earthquake struck northeastern Chiba Prefecture.
WHAT: A magnitude 5.4 earthquake shook Tokyo and surrounding prefectures.
WHEN: Reported Oct 28, 2026 at 11:26 AM ET
WHERE: Chiba Prefecture, Japan
WHY: The reason for the earthquake is not reported.
Reporting from 2 identified publishers across this event arc.
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