QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem905430
USGS iscgem905430
3 Mar 1933, 09:38
188 km E of Miyako, Japan
A magnitude 6 mw earthquake at 15 km depth.
Published location
Where is 188 km E of Miyako, 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.
39.967000, 144.108000
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
iscgem905430
Coordinates
39.967, 144.108
Network
iscgem
Significance
558