M3.1 earthquake 16 km W of Iquique, Chile
A magnitude 3.1 earthquake struck 16 km W of Iquique, Chile on Fri, Jul 31, 2020, 4:36 PM GMT-4 (20:36 UTC), 27 km (17 mi) below the surface.
A larger quake followed: M4.3 34 km NE of Iquique, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.1 (ML, local (Richter)), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-07-31 20:36:06 UTC
- Depth
- 27.4 km (17.0 mi), shallow
- Epicenter
- 20.219° S, 70.309° W
- Region
- Chile
- Felt reports
- 5
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt at Iquique.
From the USGS event page for us6000b7tr. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
5 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.9 km horizontally, 3.2 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 176°
- Stations used
- 24
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 7 in the 30 days before it.
After
- 3.954 km NNE of Iquique, Chile · 2252 days ago · 31 km deep · 66 km away · felt by 12
- 3.614 km ENE of Iquique, Chile · 2239 days ago · 45 km deep · 30 km away · felt by 6
- 4.085 km NE of Iquique, Chile · 2233 days ago · 100 km deep · 98 km away · felt by 7
- 3.753 km SE of Iquique, Chile · 2231 days ago · 50 km deep · 64 km away · felt by 12
- 4.288 km SW of Iquique, Chile · 2228 days ago · 16 km deep · 81 km away · felt by 2
- 4.334 km NE of Iquique, Chile · 2226 days ago · 61 km deep · 49 km away · felt by 21
- 3.925 km SSW of Iquique, Chile · 2204 days ago · 66 km deep · 22 km away · felt by 5
- 3.320 km SE of Iquique, Chile · 2198 days ago · 83 km deep · 33 km away · felt by 3
Before
- 3.552 km S of Iquique, Chile · 2264 days ago · 39 km deep · 55 km away · felt by 8
- 4.510 km S of Iquique, Chile · 2266 days ago · 68 km deep · 20 km away · felt by 64
- 4.285 km SW of Iquique, Chile · 2267 days ago · 35 km deep · 73 km away · felt by 15
- 5.93 km SE of Iquique, Chile · 2268 days ago · 74 km deep · 18 km away · felt by 170 · PAGER yellow
- 3.217 km WNW of Iquique, Chile · 2269 days ago · 42 km deep · 7 km away · felt by 2
- 4.013 km WNW of Iquique, Chile · 2270 days ago · 42 km deep · 7 km away · felt by 21
- 4.146 km SW of Iquique, Chile · 2278 days ago · 35 km deep · 37 km away · felt by 12
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000b7tr. Read Fri, Oct 2, 2026, 12:18 PM UTC.