Earthquake of 7.7 degrees in the Solomon Islands and tsunami warning The early warning center for tsunamis in the Pacific Ocean with a new warning of said hazardous seismic waves are likely to affect the next three hours the shores in Solomon Islands, Vanuatu, Papua New Guinea, in Nauru and New Caledonia, Tuvalu , and Kosrae after seismic vibration magnitude of 7.7 degrees was recorded in 70 km from the islands of Solomon, according to the US Geological Survey (USGS). The USGS originally refers to magnitude 8 earthquake vibration.