M4.7 earthquake 78 km WSW of Puerto Casma, Peru
A magnitude 4.7 earthquake struck 78 km WSW of Puerto Casma, Peru on Sat, Aug 9, 1975, 11:20 PM GMT-5 (04:20 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1975-08-10 04:20:15 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 9.746° S, 79.042° W
- Region
- Peru
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
- Stations used
- 8
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000cds. Read Wed, Sep 30, 2026, 1:10 PM UTC.