Districts of Idukki, Kasargode, Kozhikode, Kannur and Ernakulam districts have been receiving heavy rains. Coastal areas have been severely affected with heavy sea erosion.
Seven fishermen have been reported missing in Thiruvananthapuram and Kollam districts after they went to sea. Search operations are on to find them.
Met department has already issued a warning for the fishermen.
Malankara, Pambla and Kallarkutty Dams in Idukki have already been opened and more dams are likely to be opened, depending on the rains.