WhereIsAtlas · Natural disaster

1970 Bhola Cyclone

The deadliest cyclone in recorded history — and a disaster that helped create a nation

Concluded — The deadliest tropical cyclone ever recorded — it killed possibly 300,000-500,000 in East Pakistan (now Bangladesh) in November 1970.

On 12 November 1970, a powerful Category 3-equivalent cyclone made landfall on the coast of East Pakistan (today Bangladesh), at the head of the Bay of Bengal. The area — one of the most densely populated, low-lying deltas on Earth — was directly in the path of a massive storm surge, which swept inland across the islands and floodplains of the Ganges Delta.

The toll was catastrophic and is still debated: estimates of the deaths range from about 300,000 to 500,000, making the 1970 Bhola cyclone the deadliest tropical cyclone ever recorded. Entire villages were obliterated, crops and livestock destroyed, and the region's already-fragile infrastructure was annihilated. In the worst-hit areas, an estimated 45% of the population died.

The disaster had profound political consequences. The government of Pakistan's slow, inadequate response fuelled enormous resentment in East Pakistan and became a catalyst for the Bangladesh Liberation War of 1971, which ended in the creation of the independent nation of Bangladesh. The cyclone is remembered not just as a natural tragedy but as a political event that reshaped South Asia — and as the reason modern Bangladesh invests heavily in cyclone shelters and early warning.

Quick facts

Landfall
Nov 12, 1970
Deaths
≈ 300,000-500,000
Location
Ganges Delta, East Pakistan
Killer
A massive storm surge
Legacy
Helped trigger Bangladesh's creation

Sources

Related: typhoon haiyan · nauru