Seismic event — south of Tonga

Seismic·● resolved·Tier 2 · observational·79d active

Level5.5/ 10

Signals

MagnitudeM5.1

Cite this situation

Monitoring Room, "Seismic event — south of Tonga", situation page, level 5.5/10 (Monitoring Room's 0–10 severity score), as of 2026-08-04 14:56 UTC, source: USGS. https://monitoringroom.com/s/seismic-us6000ti0r

Call what happens next

Will a magnitude 6.0+ earthquake strike the Japan region between 19–25 October 2026?No calls yet — be first · as of 07:36 UTC
Will a magnitude 5.5+ earthquake strike the California region between 6–31 October 2026?No calls yet — be first · as of 07:36 UTC
Will a magnitude 6.0+ earthquake strike the Indonesia region between 6–31 October 2026?No calls yet — be first · as of 07:36 UTC

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