A rare magnitude 6.1 earthquake struck off Cuba’s northwest coast on Monday, with tremors felt across Cuba, Mexico’s Yucatán Peninsula, and parts of Florida.

The quake occurred at a shallow depth of 26 km (16 miles) and was unusual because it happened within a tectonic plate rather than along a plate boundary, where earthquakes are more common.

According to the USGS, no earthquake of similar strength had occurred within 200 miles of the area since 1880.

While no major damage, casualties, or tsunami threats were reported, the event raised concerns in Cuba due to aging infrastructure and ongoing power outages, Reuters has reported.

Authorities in Mexico activated emergency protocols, and residents in several cities evacuated buildings after feeling the shaking.