The deep depression which now lay centred near Purulia will cause heavy rain and strong wind in Purulia, West Burdwan, Birbhum, Murshidabad, Malda and parts of Jharkhand and Bihar till tomorrow, Das said. The rains, which began on Sunday night, continued on Monday, hampering functioning of offices and business establishments on the first working day of the week. "A few places in Gangetic West Bengal may witness extremely heavy rainfall in the next 24 hours", said an official.
The India Meteorological Department (IMD) in its latest bulletin said that the observations received from Kolkata Doppler weather radar and satellite imageries indicate that the deep depression over Gangetic West Bengal has moved west-northwestwards with a speed of about 12 kmph during the past sic hours.
A portion of glass wall of an aero bridge collapsed at Kolkata airport due to heavy winds.
The heavy downpour threw movement of vehicles in several parts of Kolkata out of gear.
The rain and wind uprooted trees in many areas of northern and southern parts of the city.
Departure of flights from Kolkata airport were temporarily suspended due to bad weather. A flight from Port Blair was diverted to Agartala.
Eight AI flights scheduled to depart from Kolkata and five slated for arrival had been cancelled till 3.30 pm, the senior official said.
As per PTI, Delhi-Kolkata and Delhi-Mumbai flights were diverted to Delhi and Ranchi, respectively.
Squally winds speed reaching 45-55 kmph and gusting to 65 kmph would prevail along and off the coast.
According to railway officials, the suburban and long distance train services of both Eastern and South Eastern Railways were affected slightly in the morning due to the rains.
Fishermen have been advised not to venture into the sea during the same period.
"All trains of the South Eastern Railway (SER) are running as per schedule and there is no disruption so far", SER spokesman Sanjoy Ghosh said.