On 11 September 2022, an earthquake of moment magnitude 7.6–7.7 struck Papua New Guinea, in the northern part of Morobe Province.
The normal faulting earthquake occurred with a hypocenter depth of 116.0 km (72.1 mi) beneath the Finisterre Range.
[5] The earthquake measured 7.6 on the W-phase moment magnitude (Mww ) scale at a depth of 116.0 km (72 mi) by the United States Geological Survey (USGS).
Deep-focus earthquakes, those with focal depths greater than 300 km, also occur beneath Papua New Guinea and the Bismarck Sea to the northeast.
[1] Prime Minister James Marape stated that the extent of destruction and casualties were unknown, and that multiple regions were impacted.
According to Kessy Sawang, a local politician, there was serious and a potential for more casualties in settlements around the Finisterre Range and along the coast.
The Morobe Provincial Disaster Director, Charley Masange, reported injuries from collapsed structures and debris.
[17] An aerial survey of Morobe province by Mission Aviation Fellowship revealed landslides but damage was limited.
[22] At the University of Goroka, a seven-storey dormitory building sustained large cracks and window awnings fell.
[27] The Ramu hydropower station at Kainantu was damaged, leading to a complete power outage across Madang and Morobe provinces.
[36][3] Fearing a tsunami, coastal inhabitants evacuated to higher ground after reporting a drop in sea level.
[11] Small airline companies and missionary groups helped airlift injured survivors out of jungle communities.
Prime Minister Marape instructed national and provincial disaster groups to survey the damage.
[37] The K92 mining company in Kainantu temporarily ceased operations to conduct an inspection of the site and ensure the safety of workers.
[39] Many survivors in the rural mountain communities were still waiting to be rescued by volunteers and private flight companies.
[40] DataCo PNG Ltd said that damage evaluation and restoration works were being made along its submarine cable system.
[41] District government officials of Madang and Morobe gathered to discuss plans in distributing relief efforts.
[42][43] Authorities in Kabwum said that they were unable to provide assistance because government buildings were destroyed during election violence.