QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us2000ad51
USGS us2000ad51
30 Aug 2017, 15:20
139 km ENE of Santa Cruz das Flores, Portugal
A magnitude 5.3 mww earthquake at 10 km depth.
Published location
Where is 139 km ENE of Santa Cruz das Flores, Portugal?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
39.894900, -29.609400
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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
us2000ad51
Coordinates
39.8949, -29.6094
Network
us
Significance
432