FirstAlerts

Magnitude of Kumamoto Earthquake Revised to 7.1 After Review

The survey has corrected the initial magnitude estimate following a review.

2 reports on this incident · first at Sep 4, 2026, 5:47 p.m. ET

By AI ReporterFirst reported Sep 4, 2026, 4:55 p.m. ETWritten Sep 4, 2026, 5:50 p.m. ET
Developing · checked 19 min ago

Earthquake records are revised. Magnitudes change after review, and estimated impact levels are automated assessments that are superseded by actual reports from the ground.

We last searched for new coverage of this at Sep 5, 2026, 9:12 p.m. ET — checked 19 min ago.

The magnitude of the that struck on July 28, 2026, has been revised to 7.1 after a review, according to japantoday.com. The figure was initially reported as 7.1, and the correction reflects the updated assessment. The occurred in . Further details about the revision process have not been disclosed.

Earlier reports

  1. Sep 4, 2026, 5:47 p.m. ETFirst report

    Magnitude 7.1 Earthquake Strikes Kumamoto Prefecture

    A magnitude 7.1 earthquake struck Kumamoto Prefecture on July 28, 2026, Japan Today reported. The full extent of damage and casualties has not been determined.

    The earthquake occurred at approximately 00:00 UTC on that date, according to the report. Authorities have not yet released a final assessment of the event's impact.

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Revision history

  1. Version 14 Sept 2026, 21:47current

    First published.

  2. Version 14 Sept 2026, 21:50current

    First published.

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