Earthquake Details
A significant magnitude 6.1 earthquake struck under land approximately 84 kilometers north-northwest of Calama, Chile, on January 2, 2025, at 17:43 local time (20:43 Universal Time) 1. The epicenter was located at coordinates 21°42'54"S 69°7'30"W, with a depth of 99 kilometers 1.
Shaking and Impact
The earthquake's impact was felt by approximately 640,000 people, with light shaking reported in areas around Calama and nearby cities 1. The Modified Mercalli Intensity scale indicated that the shaking was moderate, with a maximum intensity of V in the affected regions 1. While no significant damage was reported, the earthquake's impact was still substantial, affecting a wide area.
Nearby Towns and Cities
Calama, the closest significant population center, experienced light shaking, with an estimated intensity of IV on the Modified Mercalli Intensity scale 1. Other nearby cities, such as Antofagasta and Iquique, also felt the effects of the earthquake, although the intensity in these areas was not as severe 1.
Tsunami Risk
Despite the earthquake's significant magnitude, the risk of a tsunami was deemed very unlikely. The epicenter was under land, and the depth of the earthquake was deeper than 100 kilometers, which reduced the likelihood of a tsunami 1.
Emergency Response
Emergency responders were on high alert following the earthquake. While there were no immediate reports of casualties or major infrastructure damage, the Chilean authorities were closely monitoring the situation and advising residents to stay cautious 1.
Humanitarian Challenges
The earthquake posed humanitarian challenges, particularly in terms of ensuring access to basic services. The Chilean government and emergency services were working to assess the full extent of the damage and provide necessary support to affected communities 1.
Aftershocks
In the days leading up to the main shock, 14 smaller foreshocks were detected, including one that measured a magnitude of 3.8 just two days prior to the main event 1. These foreshocks indicated a heightened state of seismic activity in the region.
Conclusion
The magnitude 6.1 earthquake near Calama, Chile, served as a reminder of the region's seismic vulnerability. While the immediate impact was moderate, the potential for future seismic activity remains high. The Chilean authorities' swift response and ongoing monitoring efforts are crucial in mitigating the effects of such events and ensuring the safety of residents.