QuakeFactsEvidence report · prepared 3 September 2026https://quakes99.com/entity/usp00014tu
USGS usp00014tu
1 Jan 1980, 16:42
29 km NE of Ribeira Seca, Portugal
A magnitude 6.7 ms earthquake at 10 km depth.
Published location
Where is 29 km NE of Ribeira Seca, 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.
38.815000, -27.780000
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
usp00014tu
Coordinates
38.815, -27.78
Network
us
Significance
691