QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00045p0
USGS usp00045p0
20 Feb 1990, 06:53
28 km E of Shimoda, Japan
A magnitude 6.4 mw earthquake at 14.2 km depth.
Published location
Where is 28 km E of Shimoda, 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.
34.706000, 139.252000
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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
usp00045p0
Coordinates
34.706, 139.252
Network
us
Significance
630