Dhaka, the area hit by the tornado

The Daulatpur–Saturia, Bangladesh Tornado was an extremely destructive tornado that occurred in the Manikganj District, Bangladesh on April 26, 1989. It was the costliest and deadliest tornado in Bangladesh's history. There is great uncertainty about the death toll, but estimates indicate that it killed around 1,300 people, which would make it the deadliest tornado in history. The tornado affected the cities of Daulatpur and Saturia the most, moving east through Daulatpur and eventually northeast and into Saturia.^[1] Previously, the area that the tornado hit had been in a state of drought for six months, possibly generating tornadic conditions.^[1]

• http://en.wikipedia.org/wiki/Daulatpur–Saturia tornado