Written by on . Last updated April 16th, 2024.

A M4.9 earthquake struck under land 151 kilometer from Calama in Chile in the night of Wednesday March 27th, 2024. Argentina is also near its epicenter.

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Earthquake Summary

The earthquake struck on land in Chile, 151 kilometer (94 mi) south-east of Calama in Antofagasta. The center of this earthquake had an intermediate depth of 133 km.

Date and Time: Mar 27, 2024 02:08 (Santiago Time)
- Mar 27, 2024 05:08 Universal Time.
Location: 151 km SE of Calama, Antofagasta, Chile.
Coordinates 23°35'8"S 68°5'47"W.
Map: Map of area around epicenter.
Map of area around epicenter. Click to open in Google Maps.
Magnitude: MAG 4.9
Detected by 136 stations. Maximum Error Range ±0.048 .
Depth: 133 km (83 mi)
An intermediate depth.
Tsunami Risk: Tsunami very unlikely
Tsunami's are usually caused by MAG-6.5+ earthquakes, less than 100km shallow, and with an epicenter under sea. Neither of this seems to be the case.
Always stay cautious - More info here.

Nearby towns and cities

2 countries can be found within 300km of the epicenter of this earthquake: Chile and Argentina .

The closest significant population center near the earthquake is Calama in Antofagasta, Chile. Calama is located 151 kilometer (94 mi) south-east of the epicenter.

Multiple large cities are in proximity of today's earthquake. Antofagasta is located 234 km to the west. San Salvador de Jujuy is located 293 km to the east-southeast. Calama is located 151 km to the northwest.

A complete list of nearby places is included below.

Overview of nearby places

Distance Place
151 km (94 mi)
NW from epicenter
Calama

Antofagasta, Chile.
234 km (145 mi)
W from epicenter
Antofagasta

Antofagasta, Chile.
272 km (169 mi)
NW from epicenter
Tocopilla

Antofagasta, Chile.
293 km (182 mi)
ESE from epicenter
San Salvador de Jujuy

Jujuy, Argentina.
Cities and Towns around the epicenter of this earthquake.

Shaking reported by 2 people

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 2 people have reported shaking in one place in Chile.We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

  • Calama, Antofagasta, Chile: 2 people.

3 Aftershocks detected

After this earthquake struck, 3 smaller aftershocks occurred. At a distance of 87 km (54 mi) east-southeast of this earthquake, an aftershock struck 2 days later. It measured a magnitude of 3.4

This main shock was prefaced by 4 smaller foreshocks. A 3.4 magnitude earthquake hit 2 days earlier nearby.

Overview of foreshocks and aftershocks

Classification Magnitude When Where
Foreshock M 3.1 3 days earlier
Mar 24, 2024 02:15 (Santiago Time)
83 km (51 mi)
SSE from Main Shock.
Foreshock M 3.4 2 days earlier
Mar 25, 2024 03:59 (Santiago Time)
86 km (53 mi)
ESE from Main Shock.
Foreshock M 2.5 16 hrs earlier
Mar 26, 2024 10:18 (Santiago Time)
61 km (38 mi)
W from Main Shock.
Foreshock M 2.5 5 hrs earlier
Mar 26, 2024 21:26 (Santiago Time)
84 km (52 mi)
SSE from Main Shock.
Main Shock
This Earthquake
M 4.9 Mar 27, 2024 02:08
(Santiago Time)
-
Aftershock M 2.8 14 hrs later
Mar 27, 2024 16:02 (Santiago Time)
98 km (61 mi)
NW from Main Shock.
Aftershock M 3.1 2 days later
Mar 28, 2024 16:43 (Santiago Time)
71 km (44 mi)
ESE from Main Shock.
Aftershock M 3.4 2 days later
Mar 28, 2024 17:20 (Santiago Time)
87 km (54 mi)
ESE from Main Shock.
Detected MAG2.5+ earthquakes within within 100km (62 mi), that occurred in the three days before and after the main shock.

More earthquakes coming?

The risk of aftershocks decreases rapidly over time. Usually, aftershocks are at least one order of magnitude lower than a main shock.

The chance that a significant earthquake like this one is followed by an even larger earthquake is not so large. On average, scientists estimate a 94% chance that a major earthquake will not be followed by an even larger one. It is still adviced to be aware of this risk

Read: How to Stay Safe during an Earthquake (cdc.gov).

Earthquakes like this happen often in the region

Earthquakes of this strength are very common in the region. This is the strongest earthquake to hit since March 9th, 2024, when a 4.9 magnitude earthquake hit 145 km (90 mi) further north-northwest. An even stronger magnitude 6.8 earthquake struck on May 10th, 2022.

In total, 206 earthquakes with a magnitude of 4.9 or higher have been registered within 300km (186 mi) of this epicenter in the past 10 years. This comes down to an average of once every 18 days.

Tsunami very unlikely

DISCLAIMER: We strongly suggest to closely monitor advice from local authorities with regards to tsunami risks. Our analysis is based on automatically collected data from external sources, and these might contain mistakes. In addition, earthquakes can cause landslides that may lead to a tsunami, or be a followed by another, potentially stonger, earthquake.

It is very unlikely that this eartquake will cause any tsunami's. The reported magnitude is lower than the MAG-6.5 strength required to cause any earthquakes. In addition, this earthquake was not very shallow and appears to have occurred under land. However always stay cautious and monitor advice from local authorities.

Tsunami Risk Factors

Factor Under Sea? MAG-6.5 or stronger? Shallow depth?
Explanation Almost all tsunami's are caused by earthquakes with their epicenter under sea or very near the sea. However stay cautious in coastal areas as earthquakes on land may cause landslides into sea, potentially still causing a local tsunami. Under MAG 6.5: Very unlikely to cause a tsunami.
MAG 6.5 to 7.5: Destructive tsunami's do occur, but are uncommon. Likely to observe small sea level changes.
MAG 7.6+: Earthquakes with these magnitudes might produce destructive tsunami's.
Most destructive tsunami's are caused by shallow earthquakes with a depth between 0 and 100km under the surface of the earth. Deeper tsunami's are unlikely to displace to ocean floor.
This Earthquake Not this earthquake.
This earthquake appears to have struck on land far from any coast.
Not this earthquake.
This earthquake had a magnitude of 4.9. Earthquakes of this strength are unlikely to trigger a tsunami.
Not this earthquake.
This earthquake occurred at a depth of 133 km (83 mi). Earthquakes this deep in the earth are unlikely to trigger a tsunami.

Sources

Last updated 16/04/24 06:58 (). As more information on this earthquake becomes available this article will be updated. This article is automatically composed based on data originating from multiple sources.

  1. US Geographic Society (USGS): Earthquake us7000m87t
  2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20240327_0000072
  3. Geonames.org: World Cities Database
  4. Google Maps: Static API
  5. Earthquakelist.org: Historic Earthquakes Database

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