An earthquake with a magnitude of 6.7 struck in the Solomon Islands on Thursday evening, the U.S. Geological Survey, which monitors world quakes, said on its Web site.
There were no immediate reports of casualties or damage from the quake, which struck at 7:39 p.m. local time at its epicenter, located some 45 miles west-southwest of Honiara, the country's capital on the island of Guadalcanal.
The quake had a depth of about one mile under the seabed.
The Hawaii-based Pacific Tsunami Warning Center said no destructive widespread tsunami threat exists based on historical quake and tsunami data.
But it cautioned that quakes of this size sometimes generate local tsunamis that can be destructive along coasts located within 62 miles of the epicenter.
On April 2, a tsunami triggered by a M8.1 quake hit the Solomon Islands, killing more than 50 people and displacing tens of thousands.
The island of Gizo bore the brunt of fatalities.