The coastal areas of Kerala and southern Tamil Nadu are likely to experience the 'kallakkadal' phenomenon – the sudden swell of the seas causing rough waves – from 2.30 a.m. on May 4 (Saturday) to 11.30 p.m. on May 5 (Sunday), weather agencies said, issuing alerts to fishermen and coastal residents.
"There is a possibility of rough seas due to high waves of 0.5 to 1.5 metres during this period," according to the Indian National Centre for Ocean Information Services (INCOIS).
INCOIS, the central agency that issues weather warnings for fishermen in the country, advised people to safely moor their fishing vessels in the harbour.
