historyOur World in Data1970 · Bangladesh

Bangladesh's cyclone defences turned a Bhola-style disaster into a survivable storm

the gist

In 1970 Cyclone Bhola struck Bangladesh and killed more than 300,000 people, a death toll driven less by the storm's strength than by the absence of warnings, shelters and evacuation plans. A huge surge pushed into densely populated coastal areas, and many people drowned in their own homes. Over the following decades Bangladesh built an early warning system, a network of cyclone shelters, and organised community evacuation procedures. Storms of comparable strength now typically cause far fewer deaths, showing that preparedness, not just meteorology, decides how many people survive a cyclone.

so what

It shows that much of the death toll from natural disasters is a policy choice rather than fate. Bangladesh's record is now a standard case study for disaster preparedness in low-lying, storm-exposed countries.

fun fact

Bangladesh's cyclone shelters are often built as raised concrete buildings on stilts, designed to keep people above floodwater.

more on this

background

The 1970 Bhola cyclone, also known as the Great Cyclone of 1970 or simply the Bhola Cyclone, was the deadliest tropical cyclone on record, as well as one of the deadliest humanitarian disasters ever recorded. It struck East Pakistan (present-day Bangladesh) and India's West Bengal on 12 November 1970. At least 300,000 people died in the storm, possibly as many as 500,000, primarily as a result of the storm surge that flooded much of the low-lying islands of the Ganges Delta. The Bhola cyclone was the sixth and strongest cyclonic storm of the 1970 North Indian Ocean cyclone season.

The cyclone formed over the central Bay of Bengal on 8 November and travelled northward, intensifying as it did so. It reached its peak with winds of 185 km/h (115 mph) on 10 November, and made landfall on the coast of East Pakistan on the following afternoon. The storm surge devastated many of the offshore islands, wiping out villages and destroying crops throughout the region. In the most severely affected upazila Tazumuddin, over 45% of the population of 167,000 were killed by the storm.

From Wikipedia: 1970 Bhola cyclone (CC BY-SA 4.0) ↗

key facts

Started
3 November 1970
Ended
13 November 1970
Date
1970

Facts: Wikidata (CC0)

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