A magnitude 4.8 earthquake occurred on the southern coast of Puerto Rico on Friday morning, rattling the island. 

The earthquake happened at 9:19 a.m. Eastern, a little more than 3 miles southwest of Guánica, Puerto Rico. 

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Light to moderate shaking was reported across the western half of the island, per the U.S. Geological Survey. 

The earthquake was reported 4.3 miles below the surface. 

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There weren't any initial reports of damage to Puerto Rico after the earthquake. 

This is a developing story. Check back for the latest updates.