Chennai and Tamil Nadu Brace for Continued Heavy Rains as IMD Issues Yellow Alert

IMD Issues Yellow Alert for Chennai and Neighboring Districts

The India Meteorological Department (IMD) has issued a yellow alert for Chennai and several other districts across Tamil Nadu, forecasting continued heavy rainfall. This alert, effective for October 23, 2025, and extending through the week, signals a period of significant precipitation for the region. Districts specifically mentioned under the yellow alert include Chennai, Tiruvallur, Kancheepuram, Chengalpattu, and Ranipet. The forecast indicates the likelihood of heavy rainfall, ranging from 64.5 mm to 115.5 mm, at isolated locations.

Northeast Monsoon Intensifies, Low-Pressure Systems Monitored

The current spell of rain is attributed to the active northeast monsoon over Tamil Nadu. While a well-marked low-pressure area over the Bay of Bengal, which had previously caused concern, has reportedly weakened or is diffusing, a new low-pressure system is anticipated to form over the southeast and adjoining east-central Bay of Bengal on October 24. This new system is expected to move west-northwestwards and could further influence weather patterns in the coming days. Light to moderate rain, accompanied by thunderstorms and lightning, is also predicted across parts of Tamil Nadu and Puducherry.

Impact and Preparedness Measures

Authorities are on high alert as the heavy rainfall is expected to lead to various disruptions. Potential impacts include:

• Traffic disruptions and waterlogging in low-lying areas.
• Possibility of power cuts in several parts of the city.
• Schools and colleges in some districts, such as Dharmapuri, have declared holidays. While schools in Chennai were closed on Wednesday, official announcements for today (October 23) regarding closures are being closely monitored.

In response to the forecast, Chief Minister M.K. Stalin held a review meeting, directing officials to implement all necessary precautionary measures. Deputy Chief Minister Udhayanidhi Stalin also inspected the Integrated Command and Control Center in Chennai, emphasizing swift action on public complaints. The Mettur Dam, a significant reservoir in the state, has reached its full capacity, prompting the Water Resources Department to prepare for the release of excess water. Fishermen have been advised not to venture into the sea, and Marina Beach is experiencing rough weather conditions.

Outlook for the Coming Days

The IMD's extended forecast indicates that rainfall activity will persist, particularly affecting northern Tamil Nadu districts, with alerts remaining in place until October 28. Residents are advised to stay informed through official weather warnings, carry umbrellas, and take necessary precautions to ensure safety during this period of inclement weather.