M4.8 earthquake 89 km NNW of Vallenar, Chile
A magnitude 4.8 earthquake struck 89 km NNW of Vallenar, Chile on Sat, Nov 27, 2021, 7:44 PM GMT-3 (22:44 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-11-27 22:44:48 UTC
- Depth
- 33.1 km (20.5 mi), shallow
- Epicenter
- 27.829° S, 71.098° W
- Region
- Chile
- Felt reports
- 6
- 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 |
|---|---|---|---|
| 4.8 | Mwr, regional moment | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.034 · 82 stations |
| 4.98 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
Did you feel it?
6 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
- Reverse (thrust)
- Moment magnitude
- 4.8 Mwr
- Nodal plane 1
- Strike 359°, dip 59°, rake 87°
- Nodal plane 2
- Strike 184°, dip 31°, rake 95°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.9 km horizontally, 3.7 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- From location
- Station coverage gap
- 70°
- Stations used
- 168
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.3123 km W of Copiapó, Chile · 1751 days ago · 10 km deep · 84 km away
- 4.127 km W of Copiapó, Chile · 1725 days ago · 88 km deep · 68 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000fxkd (also filed as iscgem621480545). Read Sun, Oct 4, 2026, 6:40 PM UTC.