Chile earthquakes

M5.0 earthquake 79 km WSW of San Antonio, Chile

A magnitude 5.0 earthquake struck 79 km WSW of San Antonio, Chile on Mon, Apr 19, 2021, 9:05 AM GMT-4 (13:05 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.5 82 km WSW of San Antonio, Chile. This one was a foreshock.

San Antonio forecast More in Chile

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 5.0 (Mww, W-phase moment), moderate
Magnitude from: USGS National Earthquake Information Center
Local time: Mon, Apr 19, 2021, 9:05 AM GMT-4
UTC: 2021-04-19 13:05:26 UTC
Depth: 10.3 km (6.4 mi), shallow
Epicenter: 33.964° S, 72.347° W
Region: Chile
Felt reports: 17
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
5.0	Mww, W-phase moment	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.093 · 11 stations
5.02	Mw, moment	ISC-GEM global catalog	Final · ±0.1
4.8	Mwr, regional moment	USGS National Earthquake Information Center	Moment tensor · Reviewed

Did you feel it?

17 people reported to the USGS what they felt; the strongest reported shaking was VI, strong 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: 4.8 Mwr
Nodal plane 1: Strike 328°, dip 24°, rake 62°
Nodal plane 2: Strike 177°, dip 69°, rake 102°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 4.4 km horizontally, 3.1 km in depth
Magnitude uncertainty: ±0.09
Depth from: From location
Station coverage gap: 137°
Stations used: 66

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.0 and up: 24 in the 60 days after this one and 3 in the 30 days before it.

After

Before

Earthquakes today Chile earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000e2vk (also filed as iscgem620345400). Read Sat, Oct 3, 2026, 1:57 PM UTC.