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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.

Off West Coast of Northern Sumatra earthquake sequence

Active Gardner–Knopoff windows · 20.10.2026 19:29 – ongoing

Earthquakes
4
Largest
M5,4
Mainshock
M5,4 · Off West Coast of Northern Sumatra · 20.10.2026 19:29

Earthquakes of the sequence (oldest to newest)

Earthquakes per day

Earthquakes in the sequence

MagnitudeLocationTime (Europe/Istanbul)Depth
5.4 Off West Coast of Northern Sumatra 20.10.2026 19:29 10,0 km
5.0 21 km SW of Meulaboh, Indonesia 20.10.2026 19:29 75,9 km
3.6 OFF W COAST OF NORTHERN SUMATRA 21.10.2026 15:32 28,0 km
3.2 OFF W COAST OF NORTHERN SUMATRA 24.10.2026 12:00 19,0 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))