QQuakeFacts
USGS usp000gkp2

20 Oct 2008, 16:51

284 km SSE of Shimoda, Japan

A magnitude 5 mwc earthquake at 109.5 km depth.

Depth109.5 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 284 km SSE of Shimoda, Japan?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

32.266000, 139.987000

Open the interactive map ↗

What the numbers mean

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

Need a current safety answer?

Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.

Open the USGS event →

Continue exploring

Nearby events with a similar magnitude

Catalog fields and provenance
Event ID
usp000gkp2
Coordinates
32.266, 139.987
Network
us
Significance
385