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Significant earthquake

This summarises a recorded earthquake only; it is not a warning or a prediction. Follow AFAD and the competent authorities for official statements and guidance.

54 km E of Tomioka, Japan earthquake sequence

Active Gardner–Knopoff windows · 27.10.2026 03:25 – ongoing

Earthquakes
4
Largest
M4,8

Earthquakes of the sequence (oldest to newest)

Earthquakes per day

Earthquakes in the sequence

MagnitudeLocationTime (Europe/Istanbul)Depth
4.8 54 km E of Tomioka, Japan 27.10.2026 03:25 48,9 km
4.0 NEAR EAST COAST OF HONSHU, JAPAN 27.10.2026 18:28 80,0 km
3.6 NEAR EAST COAST OF HONSHU, JAPAN 07.11.2026 16:48 60,0 km
3.9 NEAR EAST COAST OF HONSHU, JAPAN 08.11.2026 01:38 60,0 km

Sequences group earthquakes that have occurred by proximity in time and location (Gardner–Knopoff windows, Poisson rate test). Follow AFAD and Kandilli Observatory for official assessments. (Gardner & Knopoff (1974))