M3.6 earthquake 18 km ESE of Estique, Peru
A magnitude 3.6 earthquake struck 18 km ESE of Estique, Peru on Wed, Oct 3, 1973, 7:22 PM GMT-5 (00:22 UTC), 153 km (95 mi) below the surface.
A larger quake followed: M5.2 Peru-Bolivia border region. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.6 (mb), minor
- Local time
- UTC
- 1973-10-04 00:22:04 UTC
- Depth
- 153.0 km (95.1 mi), intermediate-depth
- Epicenter
- 17.589° S, 69.848° 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
- 7
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.956 km ENE of Estique, Peru · 19348 days ago · 176 km deep · 40 km away
- 3.965 km E of Palca, Peru · 19337 days ago · 169 km deep · 57 km away
- 4.729 km SE of Palca, Peru · 19335 days ago · 105 km deep · 45 km away
- 5.012 km WSW of Las Yaras, Peru · 19323 days ago · 89 km deep · 94 km away
- 5.2Peru-Bolivia border region · 19294 days ago · 142 km deep · 19 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003p5. Read Mon, Sep 28, 2026, 10:17 PM UTC.