M4.6 earthquake 51 km W of San Alejandro, Peru
A magnitude 4.6 earthquake struck 51 km W of San Alejandro, Peru on Thu, Feb 2, 1978, 1:15 AM GMT-5 (06:15 UTC), 45 km (28 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 1978-02-02 06:15:01 UTC
- Depth
- 45.0 km (28.0 mi), shallow
- Epicenter
- 8.884° S, 75.681° 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.
- Stations used
- 10
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 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 usp0000st7. Read Wed, Sep 23, 2026, 2:36 AM UTC.