"The deep depression is likely to weaken into a depression and then into a well-marked low pressure and continue to move in a west-northwestward direction towards the Jharkhand border", Das said.
"We have also made a decision to set up control rooms in the districts where heavy rainfall has occurred and there is a forecast of more precipitation", he added.
The region is expected to witness heavy rainfall in the next 24-48 hours.
Plane departures at Kolkata airport were suspended for sometime due to strong winds.
Aircrafts are seen on the tarmac amidst heavy rain in Kolkata on Monday.
Heavy to very heavy rain ranged from 7 cm to 20 cm, while extremely heavy rain measured above 20 cm, the MeT department explained.
Remnants of Hurricane Nate to bring steady rain to Maine
That might sound cool, but with dew points in the mid 60s signaling some surface moisture, things may feel a bit sticky. Some partial sun is likely today , but clouds and showers will also roll through during the midday hours.
It is likely to move west-northwestwards initially during next 24 hours and move northwards thereafter.
Flight, train and road transportation systems in the city were affected due to the heavy downpour. The condition of the sea off the coast of Odisha will be rough and fishermen have been advised against venturing into the waters.
Landing of 47 in-bound flights and departure of about 35 flights was rescheduled and many flights were delayed, an official said.
Twenty-six domestics flights were diverted to Silchar, Ranchi, Agartala, Patna, Bhubaneswar airport.