Port Blair, Sept 16: Heavy rain (7 to12 cm) to very heavy (13-24 cm) rain may occur at a few places over Andaman & Nicobar Islands during next 24 hours. Under the influence of strong southwest monsoon current, strong westerly wind speed between 45 and 55 KMPH and rough to very rough seas likely along and off Andaman & Nicobar coast. Fishermen are advised not to venture into the sea. Local Cautionary Signal No. III hoisted atPortBlairPort.