Data last collected:
QuakeFactsEvidence report · prepared 24 October 2026https://quakes99.com/entity/iscgem881364
USGS iscgem881364
7 Feb 1959, 09:36
71 km NW of El Alto, Peru
A magnitude 6.9 mw earthquake at 30 km depth.
Published location
Where is 71 km NW of El Alto, 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.
-3.831000, -81.686000
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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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Catalog fields and provenance
Event ID
iscgem881364
Coordinates
-3.831, -81.686
Network
iscgem
Significance
735
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Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right 71 km NW of El Alto, Peru earthquake: magnitude 6.9 and depth | QuakeFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at 71 km NW of El Alto, Peru
Depth in another unit
The recorded event depth of 30 km is approximately 18.64 miles below the source reference surface. Depth alone does not describe damage or local hazard.
Interpreting the recorded coordinates
The published position for 71 km NW of El Alto, Peru is 3.831° south and 81.686° west. This expresses the source coordinates in hemispheres; it does not establish an entrance, public access or a safe route.