The PTWC said hazardous tsunami waves could hit coastal areas of Papua New Guinea, Indonesia, Nauru, and the Solomon Islands, while New Zealand's Ministry of Civil Defence issued a warning for all of the country's coast.
The earthquake struck 60 km to the east of Taron, New Ireland, at 8.51 pm local time (1051 GMT) at a depth of some 75 km, the USGS said.
The quake was originally recorded at 8.0 before being revised down to 7.9.
- Magnitude Mw 8.0
Region NEW IRELAND REGION, P.N.G.
Date time 2016-12-17 10:51:11.7 UTC
Location 4.52 S ; 153.46 E
- Depth 100 km
882 km NE of Port Moresby, Papua New Guinea / pop: 284,000 / local time: 20:51:11.7 2016-12-17
134 km E of Kokopo, Papua New Guinea / pop: 26,300 / local time: 20:51:11.7 2016-12-17