The cyclone also dropped heavy rainfall up to 6 in (150 mm) on Barbados and Martinique. After entering the eastern Caribbean Sea, the depression intensified into Tropical Storm Chloe on August 20. About 18 hours after attaining tropical storm status, Chloe quickly strengthened to peak winds of 65 mph (105 km/h) about 215 mi (345 km) south of the Mona Passage, as reported by reconnaissance aircraft.[4][6]