4.9 magnitude earthquake in Mang But, Quang Ngai, level 1 natural disaster risk

According to the Earthquake Information and Tsunami Warning Center (Institute of Earth Sciences, Vietnam Academy of Science and Technology), at around 1 a.m. on October 6, an earthquake of magnitude 4.9 occurred in Mang But commune, Quang Ngai; natural disaster risk level 1.

Specifically, at 1:28:42 ( Hanoi time) on October 5, this area experienced an earthquake with a magnitude of 4.9; coordinates 14.871 degrees North latitude, 108.130 degrees East longitude, focal depth of about 8.1 km. Natural disaster risk level 1.

On October 5, four consecutive earthquakes occurred in the area. The earthquakes had magnitudes ranging from 3.4 to 4.3, with a disaster risk level of 0. Also in the previous days, many scattered earthquakes occurred around this area; on September 11, an earthquake with a magnitude of 4.5 and a disaster risk level of 1 occurred.

According to Decision 18/2021/QD-TTG regulating the forecasting, warning, transmission of natural disasters and disaster risk levels of the Prime Minister , level 1 natural disaster risk for earthquakes is determined when the observed ground vibration intensity is from level V to level VI, occurring in any area within the territory of Vietnam. The level of damage, causing small impacts with limited damage to people and property, can be easily controlled.

According to Mr. Nguyen Xuan Anh, Director of the Earthquake Information and Tsunami Warning Center (Institute of Earth Sciences), this is a trigger earthquake. From 2021 to now, hundreds of earthquakes have been recorded in Quang Ngai (former Kon Tum province, concentrated in the former Kon Plong district), in which the earthquakes caused widespread tremors. The largest was the earthquake at noon on July 28, 2024 with a magnitude of 5.0; before that on August 23, 2022, there was a magnitude 4.7 earthquake.

Mr. Nguyen Xuan Anh assessed that "triggered earthquakes" were the cause of earthquakes in recent years in Kon Tum province (old). "According to preliminary studies, earthquakes in Kon Tum (old) are forecast to continue in the coming time, but the magnitude is unlikely to be greater than 5.5. However, more detailed studies are still needed to assess earthquake activity in this area," Mr. Xuan Anh commented.

Source: https://baotintuc.vn/thoi-su/dong-dat-co-do-lon-49-tai-mang-but-quang-ngai-rui-ro-thien-tai-cap-1-20251006062409960.htm