M4.3 earthquake 78 km ESE of Palca, Peru
A magnitude 4.3 earthquake struck 78 km ESE of Palca, Peru on Wed, Sep 1, 2021, 6:32 PM GMT-5 (23:32 UTC), 170 km (106 mi) below the surface.
A larger quake followed: M4.6 67 km ENE of Estique, Peru. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-09-01 23:32:32 UTC
- Depth
- 170.5 km (105.9 mi), intermediate-depth
- Epicenter
- 17.988° S, 69.257° 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.
- Location uncertainty
- About 7.7 km horizontally, 6.2 km in depth
- Magnitude uncertainty
- ±0.17
- Depth from
- From location
- Station coverage gap
- 102°
- Stations used
- 35
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.667 km ENE of Estique, Peru · 1852 days ago · 169 km deep · 68 km away
- 4.440 km SE of Calana, Peru · 1849 days ago · 97 km deep · 73 km away
- 4.0115 km E of Arica, Chile · 1837 days ago · 138 km deep · 69 km away · felt by 1
- 4.675 km ESE of Palca, Peru · 1807 days ago · 3 km deep · 8 km away
Before
- 4.340 km ENE of Palca, Peru · 1858 days ago · 162 km deep · 51 km away
- 4.317 km WNW of Palca, Peru · 1866 days ago · 102 km deep · 95 km away · felt by 1
- 4.449 km SE of Calana, Peru · 1872 days ago · 133 km deep · 66 km away
- 4.789 km E of Arica, Chile · 1886 days ago · 126 km deep · 52 km away · felt by 1
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000f9qb. Read Sat, Oct 3, 2026, 3:29 AM UTC.