A magnitude 5.5 earthquake occurred in the Volcano Islands, Japan Region on 4 October 2026.

What it means

This is a GDACS (Global Disaster Alert and Coordination System) report of a magnitude 5.5 earthquake that occurred on 4 October 2026 in the Volcano Islands, Japan Region. The 'Green' designation indicates a low-impact event with minimal expected humanitarian consequences. GDACS is an automated system that combines seismic data from multiple agencies to issue rapid alerts.

Accuracy & sourcesGrounded

The claim is highly solid as it comes directly from GDACS, a primary source that aggregates authoritative seismic data. The report is the alert itself, so there is no intermediary filtering or interpretation.

How new

This is genuinely new, reporting an earthquake that occurred on 4 October 2026, the same day as the grounding publication window.

Go deeper