Port Blair, Sept 7: The Indian Meteorological Department, Kolkata has forecast heavy rain (07-11 cm) to occur at isolated places over Andaman & Nicobar Islands during next 24 hours. Under the influence of strong Southwest Monsoon current, strong Southwesterly wind speed between 35 and 45 kmph gusting to 55 kmph and rough to very rough seas are likely along and off Andaman and Nicobar coasts. Fishermen have been advised not to venture into the sea during next 48 hours. Local Cautionary Signal No-III hoisted at Port Blair Ports. The general public have been advised to take precautionary measures and contact the State Control Room, District Control Room and Emergency Operation Centres in case of any emergency.