M3.9 earthquake 65 km E of Palca, Peru
A magnitude 3.9 earthquake struck 65 km E of Palca, Peru on Fri, Oct 19, 1973, 12:54 PM GMT-5 (17:54 UTC), 169 km (105 mi) below the surface.
A larger quake followed: M4.7 29 km SE of Palca, Peru. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.9 (mb), minor
- Local time
- UTC
- 1973-10-19 17:54:05 UTC
- Depth
- 169.0 km (105.0 mi), intermediate-depth
- Epicenter
- 17.784° S, 69.347° 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
- 8
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 2 in the 30 days before it.
After
- 4.729 km SE of Palca, Peru · 19328 days ago · 105 km deep · 54 km away
- 5.2Peru-Bolivia border region · 19288 days ago · 142 km deep · 41 km away
Before
Earthquakes todayPeru earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003vf. Read Tue, Sep 22, 2026, 10:37 AM UTC.