Event Brief
UPDATED Oct 28, 2026 at 7:04 PM ET
Oct 28, 2026 at 12:16 PM ET
Magnitude 5.5 quake strikes Japan’s Chiba prefecture
By The BriefBrief
A magnitude 5.5 earthquake struck Japan’s Chiba prefecture, registering lower 5 on Japan’s seismic scale. It was reported at a depth of about 52 kilometers, while additional reporting placed the quake at 50 kilometers in Yokoshibahikari. No tsunami threat or warning was reported.
WHO: An earthquake struck Chiba prefecture.
WHAT: A magnitude 5.5 earthquake struck Chiba prefecture.
WHEN: Reported Oct 28, 2026 at 6:59 PM ET
WHERE: Chiba prefecture, Japan
WHY: The cause of the earthquake was not reported.
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