M4.3 earthquake 46 km WNW of Iquique, Chile
A magnitude 4.3 earthquake struck 46 km WNW of Iquique, Chile on Tue, Feb 20, 2018, 7:51 AM GMT-3 (10:51 UTC), 27 km (17 mi) below the surface.
A larger quake followed: M5.5 49 km WSW 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
- 4.3 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-02-20 10:51:03 UTC
- Depth
- 26.7 km (16.6 mi), shallow
- Epicenter
- 20.088° S, 70.576° W
- Region
- Chile
- Felt reports
- 2
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Normal
- Moment magnitude
- 4.3 Mwr
- Nodal plane 1
- Strike 357°, dip 77°, rake -101°
- Nodal plane 2
- Strike 218°, dip 16°, rake -50°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.3 km horizontally, 5.1 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 138°
- Stations used
- 116
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000d5a1. Read Fri, Oct 2, 2026, 9:59 AM UTC.