Powerful 6.1 magnitude earthquake strikes off Cuba, tremors reach Florida and Mexico; strongest hit in over 100 years

A powerful earthquake measuring 6.1 on the Richter scale struck off Cuba's northwestern coast on June 8, sending tremors across parts of the Caribbean, southern Florida and Mexico's Yucatán Peninsula. While there were no immediate reports of major damage, casualties or tsunami threats, the quake stood out for both its strength and the unusually wide area over which it was felt.

According to the US Geological Survey (USGS), the earthquake occurred west-northwest of Mantua, a municipality in Cuba's western Pinar del Río province. The quake struck at a relatively shallow depth, a factor that often increases the intensity of shaking felt at the surface.

Tremors felt across Cuba, Florida and Mexico

Residents across western Cuba reported strong shaking, with tremors felt in Havana and surrounding regions. Witnesses described people leaving buildings and gathering outdoors as the ground moved beneath them.

The earthquake's reach extended far beyond Cuba. Reports of shaking emerged from numerous cities across Florida, including Miami, Orlando, Tampa and Jacksonville. Some government buildings in Miami were temporarily evacuated as a precaution, while transit authorities briefly suspended certain services to conduct safety checks.

In Mexico, tremors were reported in popular tourist destinations across the Yucatán Peninsula, including Cancún, Playa del Carmen and Tulum. Local officials activated emergency response protocols, though no significant damage was immediately reported.

One of the strongest quakes to hit in decades

Seismologists described the event as highly unusual for western Cuba and the southeastern Gulf of Mexico region. Reuters reported that the earthquake was the strongest recorded within roughly 322 kilometers (200 miles) of its epicenter since at least 1880, making it one of the most significant seismic events to affect the area in nearly 150 years.

Unlike many major earthquakes that occur along active tectonic plate boundaries, this event took place within a tectonic plate. According to USGS experts cited by Reuters, such intraplate earthquakes are less common and tend to occur more sporadically than those associated with plate-edge fault systems.

No tsunami warning issued

Despite the earthquake's strength, authorities confirmed that there was no tsunami threat associated with the event. The US National Weather Service and regional monitoring agencies stated that the conditions required to generate a dangerous tsunami had not developed.

Emergency management agencies nevertheless urged residents in affected areas to remain alert for potential aftershocks, which are common following earthquakes of this magnitude.