A 2.9-magnitude earthquake struck Sri Medan in Parit Sulong, Johor on 3 Sep 2025 at 6:39pm.
The Malaysian Meteorological Department (MetMalaysia) recorded the tremor at a depth of 10 kilometres.
Johor Malaysia Earthquake Series Continues with Latest Tremor
The epicentre was located 10km southwest of Yong Peng at coordinates 1.95 degrees north and 102.99 degrees east. No damage or strong tremors were reported from the incident.
This marks the eighth earthquake to hit Johor since the seismic activity began on 24 Aug 2025. The series started with a 4.1-magnitude earthquake at 6:13am.
Following the initial tremor, six additional earthquakes occurred on consecutive days. A 3.2-magnitude quake struck on 27 Aug at 8:59am, followed by a 2.5-magnitude tremor on 28 Aug at 7:56pm.
The pattern continued with a 3.4-magnitude earthquake on 29 Aug at 4:24am and a 2.7-magnitude tremor on 30 Aug at 7:29am. A 2.9-magnitude earthquake then occurred on 31 Aug.
A separate 2.8-magnitude tremor also hit Yong Peng, 28 kilometres northwest of Kluang, on 24 Aug 2025. MetMalaysia continues monitoring the seismic situation across the region.
Mersing Fault Movement Explains Johor Malaysia Earthquake Activity
Scientists have identified the Mersing fault as the source of the recent earthquake activity in Johor. The fault has become active again despite no previous recorded earthquakes in the area.
The tremors result from collisions in the earth’s crust that create pressure along the fault line. This pressure eventually causes the fault to slip and release energy in the form of seismic waves.
Malaysia sits on the stable Sunda Plate, placing the peninsula in a low seismic zone. The country is not located on the Pacific Ring of Fire, making earthquake activity relatively uncommon.
Old or ancient faults may become active due to earthquakes in neighbouring countries. Johor’s geological composition features a hard and old crust that allows seismic waves to travel greater distances.
The reactivation of dormant faults can occur even in geologically stable regions like the Malaysian peninsula.
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