Evidence-led learning

M5.5 — Volcano Islands, Japan region

Compare the magnitude, depth, time, and location of this earthquake observation with the local 28-event learning cohort.

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5.5magnitude mww

12.806catalog depth in km

1events at this magnitude

What this observation records

Place: Volcano Islands, Japan region
Observed: 2026-07-16T07:49:09.543Z
Updated: 2026-07-17T07:53:27.369Z
Coordinates: 22.8589, 144.3909
Depth reading: 12.806 km below the catalog reference surface

Compare with the 28-event cohort

This event is 3.95 magnitude units above the cohort median of 1.55. Its depth is 4.76 km deeper than the cohort median depth of 8.05 km.

Use the evidence

Compare this event’s magnitude with the cohort median. What is the numerical difference? Compare this event’s depth with one shallower and one deeper event. Use the time and place fields to describe what the record proves without making a prediction.My evidence note

What this observation records

Compare with the 28-event cohort

Use the evidence

Compare related local events

M5.7 — east of the South Sandwich Islands

M5.8 — south of the Fiji Islands

M5.1 — South Sandwich Islands region