Dhaka Earthquake Risk: Two Quakes in 11 Days and a City Built on Soft Ground

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The Dhaka earthquake risk stopped being an abstraction this month. Twice in eleven days, the ground under the capital moved — and the second time, it moved close.

A shallow magnitude-5.7 earthquake struck with its epicentre at Madhabdi, roughly 13 kilometres from Agargaon. Residents poured into the streets and stayed there, afraid of aftershocks. For a city of more than 20 million people, it was the geological equivalent of a warning shot fired at point-blank range.

The tremors themselves did limited damage. What they revealed should worry every person in this city far more.

What the Dhaka earthquake risk actually rests on

Dhaka is built, quite literally, on soft ground. According to the capital’s liquefaction hazard map, around 55 to 60 percent of the city falls in the red and magenta zones — the categories indicating the most vulnerable soil. The areas along the Buriganga, Turag, Balu and Shitalakkhya rivers sit on thick layers of soft clay and recent landfill, the kind of ground that can behave like liquid when shaken hard.

Experts warn that in a magnitude-7.5 earthquake, red-zone areas could suffer severe ground failure, especially where groundwater sits high near rivers, canals and ponds. Their prescriptions are known and unglamorous: proper piling, improvement of the top five to six metres of soil in high-risk areas, and real enforcement of the National Building Code. Dhaka already ranks among the twenty cities in the world most vulnerable to earthquakes. Decades of unplanned construction have stacked millions of people on top of that ranking.

To be fair, seismologists also urge calm. Small and moderate quakes near Dhaka are not proof that a catastrophic one is imminent, and panic helps no one. But there is a difference between panic and denial, and Dhaka has spent thirty years choosing denial.

The disaster beneath the disaster

Here is the uncomfortable arithmetic. Earthquakes do not kill people; collapsing buildings do. A city can do nothing about the first and everything about the second. Every building approved without soil testing, every extra floor added illegally, every inspection waved through — each is a small decision whose cost will be counted all at once, on a day nobody can schedule.

The two recent tremors caused no mass casualties, which makes them a gift: a rehearsal with no bill attached. The question is whether the state treats them that way. Retrofitting hospitals and schools, auditing high-risk buildings in the red zones, training community rescue volunteers — none of it is beyond Bangladesh’s capacity. The country manages cyclones better than almost anyone on earth because it decided, after tragedy, to take them seriously.

The ground near Dhaka has now spoken twice in eleven days. It would be reckless to assume it has finished talking — and unforgivable to have heard it and done nothing.

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Fact basis: two earthquakes with epicentres near Dhaka within 11 days (June–July 2026); shallow M5.7, epicentre Madhabdi ~13km from Agargaon; 55–60% of Dhaka in red/magenta liquefaction zones; soft clay along Buriganga, Turag, Balu, Shitalakkhya; expert warnings re: M7.5 ground failure and piling/soil improvement; Dhaka in top-20 most earthquake-vulnerable cities; experts also cautioning against panic (Daily Star, Daily Sun, Dhaka Tribune).