M4.9 earthquake 26 km WSW of Illapel, Chile
A magnitude 4.9 earthquake struck 26 km WSW of Illapel, Chile on Tue, Jan 22, 2013, 11:47 PM GMT-3 (02:47 UTC), 29 km (18 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2013-01-23 02:47:38 UTC
- Depth
- 28.8 km (17.9 mi), shallow
- Epicenter
- 31.699° S, 71.438° 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 |
|---|---|---|---|
| 4.9 | Mwr, regional moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.14 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
What happened
The USGS’s account of the effects of this earthquake.
Felt (IV) at Melipilla; (III) at Coquimbo, La Serena, Los Vilos, Santiago, Valparaiso and Zapallar; (II) at Canela, Colina, El Tabo, Illapel, Los Andes, Navidad, Paiguano, Quillota and Villa Alemana. Also felt at Maipu, Nunoa, Pudahuel, Rancagua, Renca, Vina del Mar and Vitacura.
From the USGS event page for usp000jyr4. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
17 people reported to the USGS what they felt; the strongest reported shaking was IV, light 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)
- Nodal plane 1
- Strike 349°, dip 24°, rake 84°
- Nodal plane 2
- Strike 176°, dip 66°, rake 93°
How well it is located
Reviewed by a seismologist.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
- Station coverage gap
- 86°
- Stations used
- 264
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.029 km WSW of La Ligua, Chile · 4992 days ago · 28 km deep · 93 km away · felt by 7
- 4.661 km NNW of Illapel, Chile · 4991 days ago · 53 km deep · 64 km away
- 4.619 km NW of La Ligua, Chile · 4990 days ago · 33 km deep · 71 km away
- 4.049 km W of La Ligua, Chile · 4947 days ago · 28 km deep · 88 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000jyr4 (also filed as usb000et4b, iscgem602345425). Read Sun, Oct 4, 2026, 4:25 AM UTC.