M3.5 earthquake 53 km ESE of Palca, Peru
A magnitude 3.5 earthquake struck 53 km ESE of Palca, Peru on Sat, Aug 4, 1973, 5:44 PM GMT-5 (22:44 UTC), 144 km (89 mi) below the surface.
A larger quake followed: M4.7 56 km E 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
- 3.5 (mb), minor
- Local time
- UTC
- 1973-08-04 22:44:44 UTC
- Depth
- 144.0 km (89.5 mi), intermediate-depth
- Epicenter
- 17.932° S, 69.480° 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
- 5
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 1 in the 30 days before it.
After
Before
Earthquakes todayPeru earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00002zw. Read Wed, Sep 23, 2026, 5:42 AM UTC.