A magnitude 6.1 [1] earthquake struck off the northwest coast of Cuba on Monday, June 8, 2026 [3].
The event is significant because the resulting tremors were felt across large portions of the U.S. state of Florida, raising concerns about regional seismic activity.
The earthquake occurred approximately 65 miles [2] from Mantua, Cuba [2]. While the epicenter was located in the Caribbean, the seismic waves traveled north, causing noticeable shaking throughout southwestern Florida.
Reports of the tremor spanned a wide geographic area, with shaking felt from Tampa to Miami-Dade [2]. Hundreds [4] of people in southern Florida reported feeling the floor sway or noticing vibrations during the event [4].
Local residents in the affected U.S. regions described the sensation as unexpected, as significant seismic activity is uncommon in the state. The event triggered a wave of reports across southern Florida as people sought to identify the source of the vibrations.
Official data confirms the magnitude at 6.1 [1]. The proximity of the quake to the Cuban coast and the subsequent impact on the U.S. mainland highlight the interconnected nature of the region's tectonic movements.
“A magnitude 6.1 earthquake struck off the northwest coast of Cuba.”
This event demonstrates that seismic activity in the Caribbean can have immediate, tangible effects on the U.S. mainland. While Florida is not typically known for major earthquakes, the distance the 6.1-magnitude tremors traveled suggests that regional infrastructure and public awareness must account for external seismic threats originating from nearby tectonic plates.
