HAVANA, CUBA — A historically rare and powerful earthquake struck off the northwest coast of Cuba on Monday afternoon, June 8, 2026, sending shockwaves across the Caribbean and rattling high-rise buildings as far away as Florida and Mexico’s Yucatán Peninsula.

The U.S. Geological Survey (USGS) measured the tremor at a magnitude of 6.1, originating at a shallow depth of 26 kilometers (16 miles). The epicenter was located in the southern Gulf of Mexico, roughly 104 kilometers (65 miles) west-northwest of Mantua, Cuba.

Seismologists confirmed it is the strongest earthquake to hit within a 322-kilometer (200-mile) radius of that area since 1880, making it a once-in-a-century-and-a-half seismic anomaly.

The quake hit at approximately 2:30 p.m. EDT, triggering immediate alarm across western Cuba. Residents reported upwards of 20 seconds of sustained, heavy rolling. "People ran outside, everyone scared," said Yusmila Hernandez, a resident of Pinar del Río. "It felt like no earthquake has ever felt here before."

While no casualties or catastrophic collapses were immediately reported, the tremor has sparked intense anxiety among local officials. Decades of severe economic crisis have left much of Cuba’s historic infrastructure in a state of severe disrepair, making buildings highly vulnerable to ground movement. Communication has also been heavily throttled due to ongoing, widespread power blackouts across the island.

Despite the epicenter sitting nearly 376 miles from Miami, the shallow nature of the intraplate quake allowed seismic waves to travel exceptionally well across the Gulf floor.

Shaking from the tremor was felt across a massive swath of Florida, including Tampa, Orlando, Jacksonville, and Miami. In Downtown Miami, the Stephen P. Clark Government Center and multiple commercial buildings were evacuated after workers felt the floors rumble, prompting Miami Fire-Rescue to deploy units to various structural shaking calls.

Out of caution, Miami-Dade County officials also temporarily halted Metrorail and Metromover transit services for immediate safety sweeps, though no major injuries or property damage were ultimately reported.

Across the Gulf, the tremor also surprised residents and tourists on Mexico’s Yucatán Peninsula. Strong shaking was clearly felt in major resort cities like Cancún, Playa del Carmen, and Tulum, prompting the immediate activation of emergency protocols and building evacuations out of caution.

State governors for both Yucatán and Quintana Roo announced via social media that while office buildings and hotels were cleared out of caution, no significant damage had been detected.

According to USGS seismologist Paul Earle, this event was highly unusual because it occurred within a tectonic plate (an interpolate earthquake) rather than along a volatile plate boundary. Interpolate quakes are far more scattered and less frequent, explaining why a tremor of this magnitude hasn't disrupted this part of the Caribbean basin since a 6.0 magnitude quake struck near San Cristobal, Cuba, in 1880. "An earthquake this strong had not hit within 322 kilometers of Monday's quake since 1880," Earle noted.

Fortunately, the U.S. National Weather Service confirmed that the conditions required to generate a dangerous tsunami did not materialize, and no watches or warnings were issued. However, disaster management agencies across all three impacted nations are urging residents to remain vigilant for potential aftershocks over the coming days.