Kerala and Tamil Nadu are likely to experience the 'kallakkadal' phenomenon — the sudden swell of the seas causing rough waves — and high tides till 11.30 pm on Monday, according to the weather agency. The Indian National Centre for Ocean Information Services (INCOIS) on Sunday sounded an alert to fishermen and coastal residents in the area about the possible sea surge.
INCOIS, the central agency that issues weather warnings for fishermen in the country, advised people to safely moor their fishing vessels in the harbour.
It advised coastal people, living in accident-prone areas, to relocate to safer places in view of possible danger.
It also suggested people completely avoid travelling to beaches and venturing into the sea considering the warning, a statement added.