QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem913884
USGS iscgem913884
28 Feb 1915, 18:59
98 km SSW of Ishigaki, Japan
A magnitude 7.2 mw earthquake at 20 km depth.
Published location
Where is 98 km SSW of Ishigaki, 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.
23.582000, 123.668000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
iscgem913884
Coordinates
23.582, 123.668
Network
iscgem
Significance
800