Cyclonic storm 'Dana', which formed over east-central Bay of Bengal on Wednesday, is set to bring heavy rainfall in several south Bengal districts, including Kolkata, the IMD said.

Authorities in Odisha, West Bengal, the National Disaster Response Force (NDRF) and other rescue teams are on high alert as the depression has intensified.

As per the bulletin issued by the East Coast Railway (ECoR), the cancelled trains include Howrah-Secunderabad Express, Shalimar-Puri Super Fast Express, New Delhi-Bhubaneswar Express, Howrah-Bhubaneswar Express,

Cyclone Dana, which is expected to generate wind speeds at 100-110 kmph, and gusts at 120 kmph, is a tropical cyclone. Here is a look at what a cyclone is, its types.

The IMD has issued a warning for severe weather conditions as Cyclone Dana approaches, with expected wind speeds of 1

Cyclone Dana is expected to make landfall on October 25, bringing heavy rainfall, strong winds, and dangerous conditions across large parts of eastern India.

Schools have been shut and over 150 trains cancelled as Odisha and West Bengal brace for Cyclone "Dana", which is likely to cross the coasts between Puri and Sagar Island in the early hours of October 25 with wind speeds of up to 120 kmph.