QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00045hx
USGS usp00045hx
17 Feb 1990, 02:28
80 km SSE of Koshima, Japan
A magnitude 6.1 mw earthquake at 65.9 km depth.
Published location
Where is 80 km SSE of Koshima, 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.
29.533000, 130.732000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp00045hx
Coordinates
29.533, 130.732
Network
us
Significance
572