Bihar is experiencing incessant drizzle accompanied by strong winds since morning affecting the festive mood.
Heavy downpour in the state is forecast by IMD over the next 48 hours.
"The district magistrates concerned were directed to take all precautionary measures to deal with any flood-like situation on the basis of the IMD's warning," Officer on Special Duty in Disaster Management Department (DMD) Vipin Kumar Rai told PTI.
"We have paid heed to the IMD warning since October 10 and put the flood-probe districts on alert to deal with any untoward situation," he said.
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Rai said two NDRF teams have been deployed in Supaul and one each in Darbhanga and Gopalganj districts with IMD predicting heavy rainfall in north Bihar districts - particularly in those located in the upper catchment area bordering Nepal that may cause Koshi and Gandak rivers to be in spate.
In addition, one team of State Disaster Response Force each has been put in place at Begusarai, Bhagalpur, Bhojpur, Jehanabad and Patna districts, while a reserve SDRF team will remain stationed in the state capital.
Chief Minister Nitish Kumar had held a meeting with senior officials, including the chief secretary and the state police chief three days ago to review flood preparedness. He had also directed district magistrates of the flood prone districts to take necessary action.