The India Meteorological Department (IMD) detected two strong weather systems. A deep depression sits over the Strait of Malacca. Meanwhile, a low-pressure area is developing over the southwest Bay of Bengal and nearby South Sri Lanka. IMD said one of these systems may intensify into a cyclonic storm by November 26.
Early on Wednesday, IMD posted that the deep depression over the Strait of Malacca will likely turn into a cyclonic storm on November 26. The Strait links the Andaman Sea with the South China Sea.
(A) Deep Depression over Strait of Malacca
— India Meteorological Department (@Indiametdept) November 25, 2025
The depression over Strait of Malacca moved nearly westwards in past 6 hours with a speed of 10 kmph, intensified into a deep depression and lay centered at 2330 hours IST of yesterday, the 25th November, 2025 over the same region near…
IMD Issues Rain Alerts
As a result, IMD issued rain alerts. The warnings cover the Andaman and Nicobar Islands, Tamil Nadu, Puducherry, Andhra Pradesh and Kerala.
Cyclone ‘Senyar’ Expected
In its latest update, IMD said the depression over the Strait of Malacca will move west-northwest. It will intensify into a cyclonic storm by November 26 forenoon. Winds may rise between 60 kmph and 100 kmph on Wednesday.
If the system becomes a cyclone, IMD will name it “Senyar”, a name submitted by the United Arab Emirates.
Furthermore, IMD forecast light to moderate rain across most areas of the Nicobar Islands on November 26. Heavy to very heavy rainfall may occur at isolated places on November 26 and 27. However, rainfall will gradually reduce from November 28 to 29.
Tamil Nadu on Alert
Meanwhile, another low-pressure system is strengthening over the southwest Bay of Bengal and South Sri Lanka. It may also intensify into a depression. IMD expects this system to bring rain to Tamil Nadu, Andhra Pradesh and Kerala.
Recently, heavy rain flooded several districts in Tamil Nadu on Monday. Many coastal pockets in Tuticorin went under water.
Consequently, IMD warned that Tamil Nadu may receive heavy rain on Wednesday and Thursday. The system may develop into a cyclonic storm. In addition, thunderstorms with lightning may hit Tamil Nadu between November 26 and 29. Kerala and Mahe may face similar conditions on November 26 and 27.
Schools Shut in Tamil Nadu
Due to intense rainfall, authorities shut schools and colleges in parts of Tamil Nadu on Tuesday. They did this to ensure public safety. However, officials have not yet announced whether schools and colleges will remain closed on Wednesday.