M4.9 earthquake 55 km ENE of Calama, Chile
A magnitude 4.9 earthquake struck 55 km ENE of Calama, Chile on Mon, Aug 1, 1977, 12:30 PM GMT-4 (16:30 UTC), 97 km (60 mi) below the surface.
A larger quake followed: M5.1 95 km ENE of Calama, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1977-08-01 16:30:28 UTC
- Depth
- 97.0 km (60.3 mi), intermediate-depth
- Epicenter
- 22.225° S, 68.447° W
- Region
- Chile
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Stations used
- 29
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.754 km ENE of San Pedro de Atacama, Chile · 17937 days ago · 130 km deep · 99 km away
- 5.195 km ENE of Calama, Chile · 17931 days ago · 138 km deep · 40 km away
- 4.853 km NNW of San Pedro de Atacama, Chile · 17906 days ago · 111 km deep · 27 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000pyf. Read Tue, Sep 22, 2026, 2:14 PM UTC.