QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem884281
USGS iscgem884281
28 Apr 1958, 12:47
3 km SE of Mariposa, Peru
A magnitude 6.3 mw earthquake at 35 km depth.
Published location
Where is 3 km SE of Mariposa, Peru?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-11.430000, -74.733000
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
iscgem884281
Coordinates
-11.43, -74.733
Network
iscgem
Significance
607