M4.3 earthquake 155 km NNE of Calama, Chile
A magnitude 4.3 earthquake struck 155 km NNE of Calama, Chile on Tue, Sep 22, 2009, 10:25 PM GMT-4 (02:25 UTC), 115 km (71 mi) below the surface.
A larger quake followed: M4.6 Chile-Bolivia border region. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2009-09-23 02:25:13 UTC
- Depth
- 114.7 km (71.3 mi), intermediate-depth
- Epicenter
- 21.126° S, 68.450° W
- Region
- Chile
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
no people dead or missing; no people injured; no buildings damaged or destroyed
From the USGS event page for usp000h1sw. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Station coverage gap
- 99°
- Stations used
- 46
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.1126 km N of Calama, Chile · 6183 days ago · 123 km deep · 48 km away
- 4.458 km NNE of Calama, Chile · 6179 days ago · 135 km deep · 99 km away
- 4.2115 km SE of Iquique, Chile · 6170 days ago · 116 km deep · 90 km away
- 4.0114 km SE of Iquique, Chile · 6169 days ago · 112 km deep · 92 km away
- 4.4139 km N of Calama, Chile · 6166 days ago · 92 km deep · 25 km away
- 4.6Chile-Bolivia border region · 6165 days ago · 149 km deep · 98 km away
Before
- 4.1155 km WSW of Colchani, Bolivia · 6219 days ago · 132 km deep · 27 km away
- 4.6120 km ESE of Iquique, Chile · 6221 days ago · 94 km deep · 94 km away
- 4.9167 km WSW of Colchani, Bolivia · 6233 days ago · 115 km deep · 25 km away · felt by 3
- 4.1125 km NNE of Calama, Chile · 6243 days ago · 105 km deep · 30 km away
- 5.1141 km N of Calama, Chile · 6247 days ago · 138 km deep · 41 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000h1sw. Read Fri, Oct 2, 2026, 8:55 PM UTC.