M5.1 earthquake 78 km W of Arica, Chile
A magnitude 5.1 earthquake struck 78 km W of Arica, Chile on Sun, Sep 1, 2019, 5:32 PM GMT-4 (21:32 UTC), 35 km (22 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (Mww, W-phase moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2019-09-01 21:32:16 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 18.579° S, 71.033° W
- Region
- Chile
- Felt reports
- 1
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 5.1 | Mww, W-phase moment | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.078 · 16 stations |
| 5.25 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.0 | Mwr, regional moment | USGS National Earthquake Information Center | Moment tensor · Reviewed |
Did you feel it?
1 person reported to the USGS what they felt; the strongest reported shaking was I, not felt shaking.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Reverse (thrust)
- Moment magnitude
- 5.1 Mww
- Nodal plane 1
- Strike 333°, dip 29°, rake 79°
- Nodal plane 2
- Strike 166°, dip 62°, rake 96°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.5 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- Operator assigned
- Station coverage gap
- 138°
- Stations used
- 107
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 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 us70005b1n (also filed as iscgem616255930). Read Sat, Oct 3, 2026, 4:42 AM UTC.