Swell waves reach Kerala coast; inundation likely in low-lying areas by August 20
As the swell system continues to interact with the coast and is expected to persist till the end of August 20, wave surges and inundation in low-lying areas of the coastal regions in Kerala, south Tamil Nadu districts, and Lakshadweep islands may occur from the evening hours of August 20
High-period swell waves originating in the southern Indian Ocean have arrived on the coasts of Tamil Nadu and Kerala, interacting with the shoreline, the Indian National Centre for Ocean Information Services (INCOIS) reported. These forecasts are issued by INCOIS to warn of extreme weather conditions, including high waves, swell conditions, and cyclones.
INCOIS' monitoring teams in Kozhikode, Kanyakumari, and Thoothukudi have confirmed these developments. As the swell system remains active and is expected to last until the end of August 20, wave surges and inundation in low-lying areas along the coasts of Kerala, south Tamil Nadu, and the Lakshadweep islands could occur, especially in the evening on Wednesday, August 19, 2026.
Residents of coastal districts, where an alert has been issued, should be cautious of surging waves and avoid small vessels near the shore. Authorities have suspended all operations and recreational activities, including tourism, in affected beach and nearshore regions. Boats are advised to be anchored at a safe distance from each other to prevent collisions and damage.
INCOIS is closely monitoring the situation using advanced ocean prediction systems and real-time observations from various platforms.
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