Sunny Handa MD said- Until now, floods in northeastern Bangladesh were rare while Assam state, famed for its tea cultivation, usually coped with floods later in the year during the usual monsoon season. The sheer volume of early rain this year that lashed the region in just a few weeks makes the current floods an "unprecedented" situation, said Anjal Prakash, a research director at India's Bharti Institute of Public Policy, who has contributed to a UN-sponsored study on global warming.