why are the deltas of the Krishna, Kaveri and Godavari frequently struck by cyclones?

(i) The low pressure conditions over north-western India, get transferred
to the Bay of Bengal by early November.
(ii) This shift is associated with the occurrence of cyclonic depressions which
originate over the Andaman Sea.
(iii) These cyclones generally cross the eastern coasts of India and cause
heavy and widespread rains.
(iv) These tropical cyclones are often very destructive.
(v) The thickly populated deltas of the Godavari, the Krishna and the
Kaveri are frequently struck by cyclones, which cause great damage to
life and property.
(vi) sometimes, these cyclones arrive at the coasts of Odisha, W. Bengal and
Bangladesh. The bulk of rainfall of the Coromandel coast is derived
from depression and cyclones.