A 4.2-magnitude earthquake hit Myanmar on Wednesday. The National Center for Seismology (NCS) reported that the tremor occurred at 11:00 IST at a focal depth of 37 kilometers. This comes after an earlier magnitude 3.0 earthquake hit the country on Sunday.
NCS confirmed Wednesday’s earthquake in a post on social media platform X. “EQ M: 4.2, on: 29/10/2025 11:00:59 IST, Lat: 21.79 N, Long: 93.45 E, Depth: 37 km, Location: Myanmar (sic).”
In a separate post on X on Sunday, NCS said: “EQ M: 3.0, Date: 26/10/2025 04:42:41 IST, Lat: 26.63 N, Long: 96.46 E, Depth: 10 km, Location: Myanmar.
Why are shallow tremors dangerous?
Shallow earthquakes are generally more dangerous than those that occur at great depths. This is simply because seismic waves have less distance to travel to the surface. Thus, they cause stronger ground shaking, which can lead to more extensive damage to buildings and a higher risk of death.
Tectonic vulnerability
Myanmar is prone to both moderate and large seismic hazards, including the risk of tsunamis along its extensive coastline. The country’s geographical location is very vulnerable because it is wedged between four tectonic plates (Indian, Eurasian, Sunda and Burmese plates) which are subject to intense, active geological processes.
Following the 7.7 and 6.4 magnitude tremors that struck central Myanmar on March 28, the World Health Organization (WHO) issued a warning of a series of rapidly escalating health risks for tens of thousands of displaced people. These threats included tuberculosis (TB), HIV, and vector- and water-borne diseases.
Sagaing Fault
Geologically, a 1,400-kilometer-long fault known as the Sagaing Fault runs through Myanmar, connecting the Andaman spreading center with the northern collision zone.
The Sagaing fault greatly increases the seismic hazard for Sagaing, Mandalay, Bago and Yangon – cities that together account for 46% of Myanmar’s population. Although geographically distant from the fault line, Yangon remains at considerable risk due to its high population density. A notable example is the intense 7.0 Richter scale earthquake in 1903 in Bago, which also hit Yangon hard.
A 6.6 magnitude earthquake struck the Banda Sea in Indonesia
The German Research Center for Geosciences (GFZ) reported that a magnitude 6.6 earthquake struck the Banda Sea in Indonesia on Tuesday, October 29, 2025.
The earthquake struck at a depth of 137 km (85 miles), the GFZ said.
Indonesia’s Geophysical Agency said there was no potential for a tsunami.
