Though it did not hit Puerto Rico, Hurricane David passed less than 100 miles (160 km) south of the island, bringing strong winds and heavy rainfall to the island. Portions of southwestern Puerto Rico experienced sustained winds of up to 85 mph (135 km/h), while the rest of the island received tropical storm-force winds. While passing by the island, the hurricane caused strong seas and torrential rainfall, amounting to 19.9 inches (505 mm) in Mayagüez, Puerto Rico and up to 20 inches (510 mm) in the central mountainous region.