First published Oct 28, 2026, 3:58:15 PM UTC · Last updated Oct 28, 2026, 3:58:15 PM UTC

Earthquakes

JMA: M5.4 earthquake with maximum intensity 5- in Japan

Reported by JMA Earthquake and Volcano Notices

A magnitude-5.4 earthquake was reported at 00:07 on the 29th, with maximum JMA intensity 5-lower in northeastern Chiba Prefecture. Intensity 3 was reported in parts of Ibaraki, Tochigi, Saitama, Chiba, and Kanagawa.

At a glance

Affected location: Northeastern Chiba Prefecture
Magnitude 5.4

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Why it matters

The report records shaking across several prefectures, with the strongest reported intensity in northeastern Chiba.

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Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 8/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 3/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 3/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 4/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 3/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

JMA Earthquake and Volcano Notices JMA: M5.4 earthquake with maximum intensity 5- in JapanJapan Meteorological Agency (JMA) Usage terms

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