M4.9 earthquake 21 km E of Atico, Peru
A magnitude 4.9 earthquake struck 21 km E of Atico, Peru on Mon, Oct 1, 1973, 5:34 AM GMT-5 (10:34 UTC), 73 km (45 mi) below the surface.
A larger quake followed: M5.3 25 km SSW of Achanizo, Peru. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1973-10-01 10:34:30 UTC
- Depth
- 73.0 km (45.4 mi), intermediate-depth
- Epicenter
- 16.187° S, 73.420° 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
- 32
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayPeru earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003mq. Read Wed, Sep 30, 2026, 2:19 AM UTC.