Port Blair, Aug 21: The Indian Meteorological Department, RMC Kolkata has forecast heavy rain (7-12 cm) at isolated places over Andaman and Nicobar Islands in the next 24 hours. The general public have been advised to take precautionary measures and in case of any emergency contact the State Control Room, District Control Room and Emergency Operation Centres, State Control Room: 03192- 238880 (Tele-Fax), 1077(Helpline), 1070(District Control Room), District Control Room: 03192-238881, EOC (Campbell Bay): 03193-264020, EOC (Kamorta): 03193-263222, EOC (N&M): 03192-262960, EOC (Hut Bay): 03192-284014, EOC (Car Nicobar): 03193-265241 and EOC (Havelock): 03192-282030.