QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem911336
USGS iscgem911336
23 Apr 1923, 04:17
70 km WNW of Naha, Japan
A magnitude 7 mw earthquake at 20 km depth.
Published location
Where is 70 km WNW of Naha, 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.
26.401000, 127.010000
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
iscgem911336
Coordinates
26.401, 127.01
Network
iscgem
Significance
745