Many were killed by falling trees or debris
Rescuers are searching for survivors after a powerful storm killed 130 people in India and Bangladesh over the last two days, officials say.
Many more are injured or trapped in rubble as about 100,000 houses were hit by winds of up to 160 km/h (100mph).
Officials said the toll was expected to rise as many areas were still cut off and phone lines were down.
Medical and food supplies have been rushed to the area after the cyclone struck overnight on Tuesday.
The worst-hit area is the eastern Indian state of Bihar with 76 deaths.
Officials said 42 people had died in the north-eastern areas of West Bengal state and five people were killed in Assam.
At least two people were killed in the Bangladeshi district of Rangpur.
It is the most violent storm in this area since Cyclone Aila hit eastern India and Bangladesh in May last year, killing more than 150 people.
'Worst storm'
West Bengal's civil defence and relief minister Srikumar Mukherji told the BBC that 50,000 houses were flattened by the storm in Uttar Dinajpur district alone.
"We have send 25,000 tarpaulin sheets to the district, so that people could use them to cover their rooftops which have been blown away," Mr Mukherji said.
The storm started in the Bihar-Nepal border region and cut its deadly path through north Bengal and into Bangladesh's Rangpur region, before ending up in Dhubri district of India's north-eastern state of Assam.
Mohammad Ibrahim, a 40-year-old resident of Hematabad village in West Bengal, said it was the worst storm he had ever seen.
"God has saved me but taken away my home and everything," the AFP news agency quoted him as saying.
Bihar state Chief Minister Nitish Kumar did an aerial tour of the disaster area. He said the damage was more extensive than initially thought.
Schools across the region have been damaged
Seventy-six people are reported to have died and tens of thousands of homes were destroyed in Purnia, Araria and Kishanganj districts, officials said.
The storm was followed by heavy rains that further added to the woes of villagers.
Telecommunication links have been hit hard, with railway lines damaged and roads closed in West Bengal and Bihar.
Indian authorities say emergency supplies have been rushed to the area and temporary shelters have been set up for those who had lost their homes.
Officials say that the storm was an extreme form of what is locally known as a "nor'wester" - a weather pattern that develops over the Bay of Bengal during the hot months of the year.