[3] At 16:30 IST, Joint Typhoon Warning Centre issued a Tropical Cyclone Formation Alert on the depression.

By 17:30 IST, it had consolidated into a deep depression and was 740 km south-southeast of Sagar Island, moving in a west-northwestern direction at a speed of 7 km/h.

[4] Over the next 6 hours, it intensified into cyclonic storm Dana; moving with a speed of 18 km/h and lay centered 630 km from of Sagar Island at 05:30 IST of October 23.

It further intensified into a very severe cyclonic storm at 23:30 IST; moving at a speed of 15 km/h and lay centered about 420 km from Sagar Island.

Subsequently, the system got surrounded by anti-cyclone conditions on east and west sides and encountered heavy wind shear.

The Indian Coast Guard was on high alerts and mobilised its vessels and aircraft to respond to any emergency over the Bay of Bengal.

The Calcutta Electric Supply Corporation deployed 6,000 men and 200 patrol vans to carry swift repairs after cyclone.

[17] In Murshidabad, four people were missing after strong winds from Dana caused several boats to capsize in the Ganges river.

[20] In Betagi, Barguna District, a farmer was crushed to death by a falling tree due to the cyclone.