4.5 and 3 magnitude earthquakes in Quang Ngai

Early this morning, a 4.5 magnitude earthquake (magnitude M) occurred in Mang But commune, Quang Ngai province. The Earthquake Information and Tsunami Warning Center warned of a level 1 natural disaster risk.

Map of the epicenter of the 4.5 magnitude earthquake in Mang But commune, Quang Ngai province at 1:36 a.m. on September 11 - Photo: Institute of Earth Sciences

On the morning of September 11, Mr. Nguyen Xuan Anh, Director of the Earthquake and Tsunami Warning Center (Institute of Earth Sciences), said that early this morning, two earthquakes had just occurred in Mang But commune ( Quang Ngai province).

Specifically, at 1:36 a.m. on September 11, a 4.5 magnitude earthquake occurred in Mang But commune, with a focal depth of about 8.1 km. Disaster risk warning level 1.

The second earthquake, measuring 3.0 magnitude, occurred at 2:30 a.m. the same day, with a focal depth of about 8.2 km. The disaster risk level was 0.

Currently, the Earthquake Information and Tsunami Warning Center - Institute of Earth Sciences is continuing to monitor this earthquake.

From 2021 to present, hundreds of earthquakes have been recorded in Quang Ngai (formerly Kon Plong district, Kon Tum province), including earthquakes that 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 was a 4.7 magnitude earthquake.

Mr. Xuan Anh said that "triggered earthquakes" were the cause of earthquakes in recent years in Kon Tum province (formerly).

"According to preliminary studies, earthquakes in Kon Tum (old) are forecast to continue in the coming time but are unlikely to be greater than 5.5 magnitude. However, more detailed studies are still needed to assess earthquake activity in this area," said Mr. Xuan Anh.

Currently, the Institute of Geophysics is deploying 11 monitoring stations in Kon Tum (old), and conducting in-depth updated research to assess the level of earthquake activity in this locality.

In Vietnam, earthquakes of magnitude 4-5 are considered mild earthquakes. When an earthquake occurs, objects in the house vibrate and make noise. Many people feel the earthquake. People outside the house feel a slight vibration.

Generally no damage or minor damage. Moderate to significant damage very rare. Some household items fell.

Average frequency of occurrence worldwide is 10,000 - 15,000 matches per year.

Back to topic

WISDOM

Source: https://tuoitre.vn/dong-dat-4-5-do-o-quang-ngai-20250911070248749.htm