Tamil Nadu Weather Alert: Low Pressure Likely in Bay of Bengal on November 13

The Regional Meteorological Centre (RMC) has forecast the formation of a low-pressure area over the Southeast Bay of Bengal around November 13. The system is expected to intensify into a well-marked low-pressure area within the following 24 hours, potentially bringing rainfall to several parts of Tamil Nadu.

According to the weather department, heavy rain is likely at isolated places in Ramanathapuram and Thoothukudi on Wednesday.

Twin Cyclonic Circulations Influence Tamil Nadu Weather

The Regional Meteorological Centre stated that two upper-air cyclonic circulations are currently influencing weather conditions.

One circulation lies over the Gulf of Mannar and its neighbourhood, extending up to 1.5 km above mean sea level. The other is located over the Southeast Arabian Sea and adjoining Lakshadweep region at an altitude of 0.9 km above mean sea level.

These weather systems are contributing to rainfall activity across parts of Tamil Nadu.

Chennai Weather Forecast

Chennai is likely to experience partly cloudy conditions with light rain in some areas on Wednesday.

- Maximum temperature: Around 33°C

- Minimum temperature: Around 25°C

- Rain forecast: Light rain in some parts of the city

Tamil Nadu Rain Forecast: November 12 to 15

November 12 – Heavy Rain in Southern Districts

Heavy rain is likely at isolated places over Ramanathapuram and Thoothukudi.

Moderate rain accompanied by thunderstorms, lightning and gusty winds of 40–50 kmph is expected at one or two places in the following districts:

Thanjavur, Tiruvarur, Mayiladuthurai, Nagapattinam, Pudukkottai, Dindigul, Madurai, Virudhunagar, Theni, Tenkasi and Kanniyakumari, along with Karaikal.

November 13 – Light Rain in Chennai and Nearby Districts

Light rain accompanied by thunderstorms and lightning is likely at one or two places over:

- Chennai

- Tiruvallur

- Chengalpattu

- Kancheepuram

- Ranipet

- The Nilgiris

- Ghat areas of Tirunelveli, Tenkasi and Kanniyakumari

Dry weather is expected to prevail over the remaining districts of Tamil Nadu, Puducherry and Karaikal.

November 14 – Moderate Rain Expected in Several Districts

Moderate rainfall is likely at one or two places over Chennai, Tiruvallur, Chengalpattu, Villupuram, Cuddalore, Thanjavur, Tiruvarur, Mayiladuthurai, Nagapattinam, Pudukkottai, Ramanathapuram, Thoothukukudi, Tirunelveli and Kanniyakumari.

Thunderstorms and lightning are also expected in these areas, including Puducherry and Karaikal.

November 15 – Thunderstorms and Gusty Winds Forecast

Thunderstorms and lightning accompanied by gusty winds reaching 40–50 kmph are likely at one or two places over:

Chennai, Tiruvallur, Chengalpattu, Kancheepuram, Ranipet, Tiruvannamalai, Villupuram, Kallakurichi, Cuddalore, Tiruchy, Perambalur, Ariyalur, Pudukkottai, Sivaganga, Ramanathapuram and Thoothukudi, along with Puducherry.

Key Weather Highlights

- A low-pressure area may form over the Southeast Bay of Bengal around November 13.

- The system is likely to intensify into a well-marked low-pressure area within 24 hours.

- Heavy rain is forecast for Ramanathapuram and Thoothukudi on Wednesday.

- Chennai may receive light rain, with temperatures ranging from 25°C to 33°C.

- Several Tamil Nadu districts may experience thunderstorms, lightning and gusty winds between November 12 and 15.

Residents are advised to follow the latest updates and weather advisories issued by the Regional Meteorological Centre.