A 5.3 magnitude earthquake rattled western Cuba on Monday at 1:37 PM, with provincial officials in Pinar del Río verifying that there were no material or human damages, as relayed by the Cuban News Agency.
Identified as an aftershock by Enrique Diego Arango Arias, head of the National Seismological Service, this seismic event followed a stronger 6.2 magnitude quake that shook western Cuba on June 8.
"A noticeable earthquake occurred in the west of the country at 1:37 PM with a magnitude of 5.3, an aftershock of the 6.2 magnitude earthquake from last Monday, June 8, located 98 kilometers northwest of Mantua, Pinar del Río," Arango Arias specified.
The National Center for Seismological Research pinpointed the epicenter at coordinates 22.76 degrees north latitude and -85.10 degrees west longitude, with a depth of 10 kilometers.
Lieutenant Colonel Noel Lozano Martínez, head of the Civil Defense Organization in the province, reported that perceptibility was noted in the municipalities of Mantua and Minas de Matahambre, particularly in the areas of La Sabana and the Caribbean Mining Company (Emincar).
"So far, no damages have been reported," confirmed Yamilé Ramos Cordero, first secretary of the Communist Party of Cuba in Vueltabajo and a member of the Central Committee, in statements to the official agency.
Unlike the June 8 earthquake—which was felt throughout the province and sparked a wave of social media posts—this aftershock had a more localized perceptibility, attributed by authorities to the epicenter being farther from the provincial territory.
The surprise earthquake in the Gulf of Mexico had caught the Cuban seismologist off guard, as the main event on June 8 occurred in a stable carbonate platform without known faults or prior seismic activity of such magnitude.
Western Cuba historically experiences lower seismic activity compared to the eastern part of the country, where most of the archipelago's seismic activity is concentrated.
The year 2026 has been seismically intense across the island: in the east, a 6.0 magnitude earthquake struck Guantánamo on March 17, generating over 900 aftershocks in 24 hours, and in February, a 5.6 magnitude quake caused cracks in 14 homes and the clinic in Imías.
This Monday's aftershock confirms that the seismic sequence initiated on June 8 in western Cuba remains active a week after the main event, although it has had no impact on the population so far.
Understanding Seismic Activity in Cuba
Why is western Cuba experiencing more seismic activity recently?
Western Cuba, typically a region of low seismic activity, is experiencing increased seismic events possibly due to recent tectonic shifts or undetected faults. The June 8 earthquake and its aftershocks suggest a new pattern of activity.
How does the current seismic activity in western Cuba compare to the east?
The eastern region of Cuba is generally more active seismically. However, recent events in the west, like the June 8 earthquake, have shown notable activity. The east typically sees more frequent and intense seismic events.
What measures are in place to protect the population from earthquakes in Cuba?
Cuba has a Civil Defense system that coordinates responses to natural disasters, including earthquakes. This includes public alerts, structural inspections, and emergency preparedness training for residents.