Office-goers and students in Tamil Nadu should be prepared for a wet start to the week. The Indian Meteorological Department (IMD) has issued a yellow alert indicating heavy rainfall (7-11cm/day) for six northern districts, including Chennai and Tiruvallur, as well as three southern districts. Kancheepuram and Chengelpet are under an orange alert (12-20cm/day), as they are expected to experience heavy to very heavy rainfall.

Unusual Rainfall in January: Causes and Effects

January, typically a dry month, is witnessing significant rain activity. This is due to a convergence of winds caused by a trough - an elongated region of relatively low pressure - in the easterlies, moving inland. On Sunday, Chennai experienced cloudy weather with intermittent light rain, with Nungambakkam and Meenambakkam recording 17.3mm and 9.4mm of rainfall, respectively.

Temperature Drop and Weather Forecast for Chennai

The day temperatures in Chennai have dropped significantly, with Nungambakkam and Meenambakkam reporting temperatures around 3 degrees below normal. The IMD forecasts moderate to heavy rainfall in Chennai and neighboring areas for the next 48 hours, with skies remaining partly cloudy.

Heavy Rainfall Forecast Across Tamil Nadu

The IMD has forecast heavy rainfall in several northern and southern districts of Tamil Nadu, including Villupuram, Tiruvannamalai, Ranipet, Vellore, Ramanathapuram, Tuticorin, and Tirunelveli. The heavy rainfall is expected to continue over the southern districts on January 9 and 10.

Varied Predictions and Rainfall Impact in Tamil Nadu

Weather blogger Pradeep John mentions uncertainty about the exact location of wind convergence, indicating possible heavy rainfall either north or south of Chennai. Heavy rains have already caused traffic disruptions and school closures in various parts of Tamil Nadu, including Mayiladuthurai and Velachery Main Road.

IMD’s 7-Day Rain Forecast for Tamil Nadu

The IMD has predicted rainfall over several districts in Tamil Nadu for the next seven days. This includes moderate rain in Chennai, Chengalpattu, Kancheepuram, Mayiladuthurai, Nagapattinam, and Tiruvarur districts, along with the Karaikal area.

Detailed Weather Forecast by Regional Meteorological Centre, Chennai

The Regional Meteorological Centre (RMC) in Chennai predicts heavy to very heavy rainfall in parts of the state for the next 3-4 days, influenced by a trough in the easterlies over the southwest Bay of Bengal. The forecast includes heavy rain in Chengalpattu, Kancheepuram, Chennai, Tiruvallur, Ranipet, Vellore, Thiruvannamalai, Villupuram, Ramanathapuram, Thoothukudi, and Tirunelveli districts.

Expected Weather Conditions in Southern Tamil Nadu

Similar weather conditions are predicted for Ramanathapuram, Tirunelveli, Thoothukudi, and Kanyakumari districts on January 9. Heavy rain is also likely in Tirunelveli, Tenkasi, Thoothukudi, and Kanyakumari districts on January 10.

Fishermen Warning and Safety Measures

The regional weather office has advised fishermen against venturing out along the Tamil Nadu coast adjoining the southwest Bay of Bengal, the Gulf of Mannar, and the Comorin area from January 8-11, due to the expected adverse weather conditions.

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