What is the general direction of cyclones formed in the Bay of Bengal ?

Tropical cyclones in the Bay of Bengal generally move in an east-to-west direction. This movement is primarily driven by the prevailing easterly trade winds in the tropical region, which act as steering currents for these low-pressure systems [t7]. Many cyclones in this basin are either formed in-situ or are remnants of typhoons from the Northwest Pacific that travel westward across the South China Sea to enter the Indian Seas [c1, t5]. Statistical analysis confirms that tropical cyclones in the Bay of Bengal frequently follow a westward track, often making landfall along the eastern coast of India or Bangladesh [t2, t10]. While some systems may recurve towards the north or northeast due to interactions with upper-level westerly troughs, the predominant initial movement for systems originating in the southeast or central Bay of Bengal remains east to west [t1, t8].

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 26: Tropical Cyclones > More Low-Level Disturbances In Bay Of Bengal > p. 357