M4.5 earthquake 89 km WNW of Copiapó, Chile
A magnitude 4.5 earthquake struck 89 km WNW of Copiapó, Chile on Thu, Nov 1, 2018, 7:53 PM GMT-3 (22:53 UTC), 21 km (13 mi) below the surface.
A larger quake followed: M4.6 92 km NNW of Vallenar, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mwr), light
- Local time
- UTC
- 2018-11-01 22:53:04 UTC
- Depth
- 21.3 km (13.2 mi), shallow
- Epicenter
- 27.192° S, 71.218° W
- Region
- Chile
- Felt reports
- 1
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.
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
- 4.5 Mwr
- Nodal plane 1
- Strike 31°, dip 28°, rake 131°
- Nodal plane 2
- Strike 166°, dip 69°, rake 71°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.8 km horizontally, 5.0 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 136°
- Stations used
- 83
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 2 in the 30 days before it.
After
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000i5n5. Read Mon, Sep 28, 2026, 9:15 PM UTC.