The Hong Kong Observatory recorded a magnitude 5.2 earthquake in the Guangxi Zhuang Autonomous Region early Monday, with the seismic activity felt by residents across parts of the city. The tremor, which originated approximately 550 kilometers (342 miles) west-northwest of Hong Kong, occurred at a focal depth of 10 kilometers.
Following the event, the Observatory logged more than 10 reports from members of the public who experienced the shaking. Witnesses described the vibration as lasting for several seconds. Meteorological officials evaluated the impact in Hong Kong at intensity II on the Modified Mercalli Intensity Scale, a classification indicating that the movement was felt primarily by individuals at rest or on the upper floors of buildings.
The Modified Mercalli scale measures the intensity of an earthquake based on observed effects rather than the energy released at the source. Intensity II is defined as a light tremor, often imperceptible to those who are active or outdoors, but noticeable to those in quiet indoor environments.
Seismic activity of this magnitude in the Guangxi region is monitored by regional authorities to determine potential infrastructure impact. While the Hong Kong Observatory maintains a network of sensors to track tremors originating from the mainland, the city’s high-density urban environment often results in reports from residents in tall structures even when distant seismic events are relatively low in intensity.
The Observatory continues to monitor for potential aftershocks and updates its seismic data logs as reports from the region are processed. No immediate structural damage or injuries have been reported within the Hong Kong Special Administrative Region.
