On the morning of September 11, information from the Institute of Geophysics said that at 1:36 a.m., a 4.5-magnitude earthquake occurred at the coordinates (14.900° North latitude, 108.256° East longitude), with a focal depth of about 8.1 km.
The earthquake occurred in Mang But commune, Quang Ngai province, and was determined to be at level 1 natural disaster risk.
At 2:30 a.m. the same day, another earthquake with a magnitude of 2.8 continued to occur at the location (14.913° North latitude, 108.256° East longitude), with a focal depth of about 8.2 km, also in Mang But commune, Quang Ngai. This earthquake is assessed as a level 0 natural disaster risk.
Mr. Nguyen Van Lanh, a resident of Pleiku ward, Gia Lai province, said: "The first earthquake caused quite a strong shaking of my house, even more than 150 km from Mang But. While I was sleeping, the house shook, the ground shook, proving that the earthquake had a large scale, causing far-reaching effects and creating a feeling of insecurity.
The Center for Earthquake Information and Tsunami Warning Newspaper - Institute of Earth Sciences is continuing to monitor developments.