ST. CROIX — While the ground may have felt steady in Frederiksted, the Caribbean Sea was anything but quiet late Tuesday afternoon. A magnitude 5.0 earthquake struck at 4:49 p.m. AST, centered approximately 58 kilometers (36 miles) south of Isla de Mona, Puerto Rico. The quake occurred at a depth of roughly 21 kilometers, according … Continue reading SEISMIC UPDATE: 5.0 Magnitude Earthquake Shakes Caribbean Sea South of Isla de Mona