M5.1 Shallow Earthquake Recorded Near RYUKYU ISLANDS, JAPAN

Updated: EMSC Global upgraded this solution from M5.0 to M5.1. EMSC Global reports M5.1 near RYUKYU ISLANDS, JAPAN, with a 10.0 km catalog depth.

Published 2026-09-22T11:07:10.984Z · Updated 2026-09-22T11:11:11.000Z

Update: the reporting agency changed this event's magnitude from M5.0 to M5.1. The current value is shown throughout this brief; the earlier value is retained here as revision history.

The event began at Tue, 22 Sep 2026 10:46:22 GMT. EMSC Global reports magnitude 5.1, 10.0 km catalog depth, and coordinates 28.937, 128.854.

The catalog location label is RYUKYU ISLANDS, JAPAN; no separate nearest-city field was supplied with this solution. By catalog depth, this is a shallow event. The magnitude-derived energy estimate is 2.82e+12 joules, or about 674 tons of TNT equivalent; that calculation describes source energy, not local damage.

The current catalog entry does not include a public felt-report count. No separate intensity or catalog-significance detail is available from this provider record. No official casualty or damage statement is attached to the normalized event evidence.

EMSC Global has not supplied a review status in the normalized record. No station-count, phase-count, residual, gap, or uncertainty fields were supplied in the normalized record. 1 alternate network solution is retained for comparison.

The provider record does not carry a tsunami flag at publication time. Magnitude, depth, and location can change as monitoring networks add observations and review the solution.