M3.6 earthquake 77 km SE of Palca, Peru
A magnitude 3.6 earthquake struck 77 km SE of Palca, Peru on Tue, Oct 8, 1974, 6:38 PM GMT-5 (23:38 UTC), 146 km (91 mi) below the surface.
A larger quake followed: M4.5 130 km ESE of Arica, Chile. 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
- 1974-10-08 23:38:18 UTC
- Depth
- 146.0 km (90.7 mi), intermediate-depth
- Epicenter
- 18.241° S, 69.418° 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
- 6
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.5130 km ESE of Arica, Chile · 18959 days ago · 136 km deep · 78 km away
- 3.936 km ENE of Palca, Peru · 18936 days ago · 167 km deep · 75 km away
Before
Earthquakes todayPeru earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00008b1. Read Tue, Sep 22, 2026, 7:51 PM UTC.