Marine Heatwave Advisory Services (MAHAS)

No significant Marine Heat Wave observed over Arabian Sea; Marine Heatwave event of No Heat Wave category with area of spreading 22.20% has been observed on 2025-10-23 over the Bay of Bengal; No significant Marine Heat Wave observed over Bay of Bengal; No significant Marine Heat Wave observed over Rest of Indian Ocean; No significant Marine Heat Wave observed over South Chaina Sea; No significant Marine Heat Wave observed over Red Sea; No significant Marine Heat Wave observed over Persian Gulf; No significant Marine Heat Wave observed over Gujarat coast; No significant Marine Heat Wave observed over Maharastra coast; Marine Heatwave event of Moderate category with area of spreading 37.93% has been observed on 2025-10-23 over the Goa coast; No significant Marine Heat Wave observed over Goa coast; Marine Heatwave event of Moderate category with area of spreading 55.36% has been observed on 2025-10-23 over the Karnataka coast; No significant Marine Heat Wave observed over Karnataka coast; Marine Heatwave event of Moderate category with area of spreading 54.05% has been observed on 2025-10-23 over the Kerala coast; No significant Marine Heat Wave observed over Kerala coast; No significant Marine Heat Wave observed over Lakshaweep coast; Marine Heatwave event of No Heat Wave category with area of spreading 31.15% has been observed on 2025-10-23 over the South Tamil Nadu coast; No significant Marine Heat Wave observed over South Tamil Nadu coast; No significant Marine Heat Wave observed over North Tamil Nadu coast; No significant Marine Heat Wave observed over South Andhra Prasedh coast; No significant Marine Heat Wave observed over North Andhra Pradesh coast; No significant Marine Heat Wave observed over Odisha coast; No significant Marine Heat Wave observed over West Bengal coast; Marine Heatwave event of Moderate category with area of spreading 34.41% has been observed on 2025-10-23 over the Andaman coast; No significant Marine Heat Wave observed over Andaman coast; No significant Marine Heat Wave observed over Nicober coast;