The cyclone warning signals have been hoisted at ports including Chennai, Nagapattinam, Cuddalore, Karaikal, Pamban and Thoothukudi. A Bay of Bengal depression may intensify into a cyclone by October 26. IMD forecasts extremely heavy rain in parts of Kerala and Tamil Nadu. IMD issues pre-cyclone watch for Andhra Pradesh and Yanam as Bay of Bengal depression is set to intensify into a very severe cyclonic storm, expected to cross the coast between..