First published Oct 12, 2026, 5:11:15 AM UTC · Last updated Oct 12, 2026, 5:11:15 AM UTC

M 5.5 earthquake - 123 km W of Neiafu, Tonga

USGS reported a magnitude 5.5 earthquake 123 km west of Neiafu, Tonga, at a depth of 164.813 km. The excerpt lists MMI 2.996, a GREEN PAGER alert, and a tsunami flag of 0.

Why it matters

The source provides seismic measurements and a tsunami-flag value but does not include reported damage or effects.

Location

Categories: severe-weather-and-natural-disasters

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: 1/10How 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).
Positivity: 2/10How harmful or beneficial the event is, from strongly harmful (1) to strongly positive (10).
Urgency: 3/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Sources

Primary official sourceM 5.5 earthquake - 123 km W of Neiafu, TongaU.S. Geological Survey Usage terms

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