Thiruvananthapuram: The Indian National Centre for Ocean Information Services (INCOIS) has warned of high waves and likely ‘kallakkadal’ phenomenon along the Kerala coast from 5:30 am on Tuesday until 11:30 pm on Wednesday. The forecast indicates waves could reach heights of one to two metres, along with the risk of a storm surge, leading authorities to issue a red alert for the Kerala coast.

INCOIS has urged residents to stay clear of dangerous areas and follow instructions from local authorities. They have also advised against launching any boats or fishing vessels during this period. Fishermen are encouraged to keep their boats securely moored to prevent collisions and damage. The ‘kallakkadal’ phenomenon and the high waves pose risks even if vessels are brought close to shore. INCOIS has emphasised that both launching boats and bringing them too near to land can be equally hazardous due to the anticipated high tides.

In addition to Kerala, similar warnings have been issued for the coasts of Tamil Nadu, particularly in Thoothukudi and Kanyakumari, as well as Lakshadweep, Mahe, and parts of Karnataka. Authorities recommend avoiding all beach-related activities and tourism until the INCOIS warning is lifted.

What is Kallakkadal

The ‘kallakkadal’ phenomenon is caused when storm surges in distant seas lead to enormous wave activity along the coast, occurring even without accompanying rain or strong winds. Coastal residents refer to this sudden wave action as ‘kallakkadal’, as it can catch people off guard and cause massive damage to the shoreline. The term 'kallakkadal' literally means a sea which comes suddenly like a thief.