Head of BMKG Says Jakarta is Not Safe from Earthquake Threat

November 19, 2025
10:23 AM

Table of Contents
1. West Java Megathrust
2. Sunda Strait Megathrust
3. Active fault near Jakarta
Jakarta, domclub Indonesia
—
Head of the Meteorology, Climatology and Geophysics Agency (
BMKG
) Teuku Faisal Fathani, warned that Jakarta is not safe from threats
earthquake
big.Heed the warning.
This statement was conveyed by Faislah at the opening of the 2025 National Earthquake and Tsunami Field School (SLG), which was attended by more than 1,000 participants from various regions.
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According to him, Jakarta is not an area free from earthquakes.In historical records, this area has experienced damage several times due to earthquakes.
“Jakarta is not a safe area from large earthquakes. Historical records show damage caused by earthquakes in 1668, 1780, 1834 and 1903. This should be an alarm for all parties,” said Faisal, Tuesday (18/11).
BMKG emphasized that the risk of earthquakes in Jakarta should not be ignored, considering that this area is located near a number of active earthquake sources and is vulnerable to strong shocks due to the condition of the soil composed of soft sediment.
On this occasion, BMKG also reminded that preparedness must become a culture, not just a reaction after a disaster occurs
BMKG also encourages local governments, educational institutions, media and the public to strengthen mitigation efforts without delay
“Safety can only be achieved if all parties build preparedness from now on,” said the Head of BMKG.
Referring to data released by BMKG, which was shared by the DKI Jakarta Regional Disaster Management Agency (BPBD), there is a threat of a megathrust zone flanking Jakarta.
Divided into three threats, the West Java Megathrust, the Sunda Strait Megathrust, and active faults on land (the Baribis Fault, the Lembang Fault, and the Cimandiri Fault).
1. West Java Megathrust
It is 320 km long and 200 km wide.This section of the megathrust once released massive forces of M 81, in 1903, and M 7.8 in 2006.
2. Sunda Strait Megathrust
It is 200 km wide and 280 km long, with a shift of 4 cm per year.According to the World Geological Agency (BMKG), the largest earthquake in the Sunda Strait occurred in 1757, with a time span of 267 years.
3. Active fault near Jakarta
Firstly, the Baribis fault is the main fault in northern West Java.The results of interpretation of aerial photographs and ground images show that in the northern part there is a regional lineament that leads to the northwest and southeast.This lineament then moves to the southeast.
The two Cimandiri faults are the oldest, according to Cretaceous age.The stretch starts from Pelabuhan Ratu Bay and moves east through the Cimandiri Valley, Cipatat-Rajamandala, Mount Tangkuban Parahu-Burangrang, and possibly moving northeast towards Subang.
Finally, the Lembang Fault is north of Bandung, approximately 30 kilometers west-east.This type of strike slip fault has a slight vertical component.On August 28 2011, the Lembang fault caused an earthquake measuring M 3.3 at a very small depth.
(wsj/dmi)
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