QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000d7x5
USGS usp000d7x5
8 Nov 2004, 02:15
6 km S of Nagaoka, Japan
A magnitude 5.5 mwb earthquake at 10 km depth.
Published location
Where is 6 km S of Nagaoka, 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.
37.396000, 138.862000
Open the interactive map ↗Map data © OpenStreetMap contributors
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.
Continue exploring
Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp000d7x5
Coordinates
37.396, 138.862
Network
us
Significance
476