M4.8 earthquake 63 km ESE of Palca, Peru
A magnitude 4.8 earthquake struck 63 km ESE of Palca, Peru on Wed, Dec 20, 2017, 1:53 PM GMT-5 (18:53 UTC), 142 km (89 mi) below the surface.
A larger quake followed: M6.3 100 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
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-12-20 18:53:43 UTC
- Depth
- 142.4 km (88.5 mi), intermediate-depth
- Epicenter
- 17.991° S, 69.410° 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 7.3 km horizontally, 6.8 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- From location
- Station coverage gap
- 75°
- Stations used
- 52
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 8 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.865 km E of Estique, Peru · 3201 days ago · 149 km deep · 59 km away
- 4.975 km SE of Palca, Peru · 3186 days ago · 127 km deep · 22 km away
- 6.3100 km ESE of Arica, Chile · 3175 days ago · 116 km deep · 99 km away · felt by 64
- 4.283 km SE of Palca, Peru · 3174 days ago · 123 km deep · 41 km away
- 4.992 km SE of Palca, Peru · 3171 days ago · 10 km deep · 39 km away
- 4.292 km SE of Palca, Peru · 3170 days ago · 10 km deep · 35 km away
- 4.560 km ESE of Palca, Peru · 3167 days ago · 135 km deep · 6 km away
- 4.555 km ENE of Palca, Peru · 3157 days ago · 133 km deep · 42 km away
Before
- 4.930 km SSE of Palca, Peru · 3206 days ago · 110 km deep · 49 km away
- 4.059 km E of Arica, Chile · 3207 days ago · 142 km deep · 70 km away
- 4.370 km ESE of Palca, Peru · 3208 days ago · 158 km deep · 13 km away
- 5.09 km E of Tacna, Peru · 3212 days ago · 94 km deep · 80 km away · felt by 1
- 4.283 km E of Arica, Chile · 3212 days ago · 136 km deep · 64 km away
- 4.870 km ENE of Palca, Peru · 3229 days ago · 154 km deep · 48 km away · felt by 2
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000btv2. Read Thu, Oct 1, 2026, 3:24 AM UTC.