M3.9 earthquake 77 km ESE of Palca, Peru
A magnitude 3.9 earthquake struck 77 km ESE of Palca, Peru on Sat, Sep 23, 2017, 10:31 PM GMT-5 (03:31 UTC), 147 km (92 mi) below the surface.
A larger quake followed: M6.3 58 km E 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
- 3.9 (mb), minor
- Local time
- UTC
- 2017-09-24 03:31:36 UTC
- Depth
- 147.3 km (91.6 mi), intermediate-depth
- Epicenter
- 18.021° S, 69.274° 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 7.5 km horizontally, 5.5 km in depth
- Magnitude uncertainty
- ±0.17
- Depth from
- From location
- Station coverage gap
- 57°
- Stations used
- 39
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 3 in the 30 days before it.
After
- 6.358 km E of Arica, Chile · 3278 days ago · 85 km deep · 79 km away · felt by 82
- 4.459 km ESE of Arica, Chile · 3278 days ago · 91 km deep · 81 km away
- 4.856 km ESE of Arica, Chile · 3278 days ago · 94 km deep · 82 km away
- 4.147 km ESE of Arica, Chile · 3276 days ago · 102 km deep · 90 km away
- 3.938 km ESE of Arica, Chile · 3272 days ago · 89 km deep · 99 km away
- 4.268 km E of Estique, Peru · 3266 days ago · 165 km deep · 66 km away
- 4.312 km E of Palca, Peru · 3240 days ago · 153 km deep · 67 km away
- 4.215 km ESE of Estique, Peru · 3239 days ago · 156 km deep · 80 km away
Before
Earthquakes todayPeru earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000atsq. Read Thu, Oct 1, 2026, 1:26 AM UTC.