TOKYO — Japan issued a tsunami advisory on Monday after a magnitude 6.6 earthquake struck the southwest of the country. The public warnings to stay away from coastal areas were later lifted.

The agency initially gave the magnitude estimate at 6.9, but later revised it down. An official first told reporters the lowered magnitude was 6.7, but the agency then released a statement with the magnitude revised to 6.6. There were no immediate reports of damage. Residents in some coastal areas were told to evacuate as a precautionary measure.

NHK said a tsunami, estimated to be as high as 3.2 feet, reached land within 30 minutes of the quake. The waters detected at Miyazaki Port measured 0.7 feet high, the reports said.

Tsunami advisories were issued for Miyazaki prefecture, where the quake was centered, in the southwestern island of Kyushu, as well as nearby Kochi prefecture in Shikoku island, shortly after the quake struck at 9:19 p.m. according to the agency. They were all called off shortly before midnight.

– The Associated Press