M4.2 earthquake 45 km W of Iquique, Chile
A magnitude 4.2 earthquake struck 45 km W of Iquique, Chile on Mon, Feb 1, 2016, 6:27 PM GMT-3 (21:27 UTC), 22 km (14 mi) below the surface.
A larger quake followed: M4.8 32 km NNW 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
- 4.2 (mwr), light
- Local time
- UTC
- 2016-02-01 21:27:28 UTC
- Depth
- 22.0 km (13.7 mi), shallow
- Epicenter
- 20.177° S, 70.587° W
- Region
- Chile
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Oblique reverse
- Moment magnitude
- 4.2 Mwr
- Nodal plane 1
- Strike 20°, dip 18°, rake 121°
- Nodal plane 2
- Strike 167°, dip 74°, rake 80°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.4 km horizontally, 2.8 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 161°
- Stations used
- 52
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.832 km NNW of Iquique, Chile · 3882 days ago · 62 km deep · 38 km away · felt by 2
- 4.373 km SW of Iquique, Chile · 3882 days ago · 37 km deep · 52 km away
- 3.877 km W of Iquique, Chile · 3882 days ago · 15 km deep · 32 km away
- 4.185 km W of Iquique, Chile · 3879 days ago · 33 km deep · 40 km away
- 4.159 km WSW of Iquique, Chile · 3866 days ago · 30 km deep · 30 km away
- 4.184 km SSW of Iquique, Chile · 3862 days ago · 51 km deep · 81 km away
- 4.5104 km WSW of Iquique, Chile · 3862 days ago · 25 km deep · 72 km away
- 4.088 km NW of Iquique, Chile · 3842 days ago · 38 km deep · 59 km away
- 4.197 km WNW of Iquique, Chile · 3835 days ago · 20 km deep · 54 km away
- 4.625 km ESE of Iquique, Chile · 3834 days ago · 54 km deep · 69 km away · felt by 1
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us20004wds. Read Wed, Sep 30, 2026, 9:38 AM UTC.