© USGS
A 6.0-magnitude earthquake has struck off the coast of Puerto Rico at a shallow depth of 10 kilometers, around 60 kilometers north of the town of San Antonio, the US Geological Survey (USGS) reports.
The earthquake was registered at 03:23 UTC on Tuesday. The USGS originally reported its magnitude as 6.3, but later reduced the number to 6.0. No tsunami warning has been issued yet. The closest residential area to the epicenter of the quake is San Antonio, a small town with a population of just over 2,000 people, and the municipality of Isabella in the northwestern part of the island.
Strong tremors were reported across the island, with terrified locals taking to social media to share firsthand accounts of the quake.
"I am still shaken to the core. It was very strong. I was really scared," a netizen based in Aguadilla, a town on Puerto Rico's northwestern tip, tweeted.
Witnesses reported hearing a "long sound like if it was thundering" before the jolts rattled the ground.
The earthquake was followed by several aftershocks, with magnitudes of about 4.6 or greater.
Comment: Crop catastrophe hits US Midwest: Latest USDA report outlines nightmare food production scenario