Chennai schools close as heavy rains continue, more expected

Chennai is facing heavy rainfall as relentless downpours continue. Schools are closed today, with forecasts warning of intensified rainfall ahead.

The India Meteorological Department (IMD) has issued alerts across Tamil Nadu for heavy downpours until November 15. A developing low-pressure system over the Bay of Bengal is expected to worsen the situation, with Chennai and nearby districts like Kancheepuram and Tiruvallur likely to receive up to 12 cm of rainfall.

IMD's warnings, with a yellow alert, cover coastal and interior Tamil Nadu. By mid-November, there will be a lot of rain across 17 districts in the state. Chennai and suburbs expect moderate to heavy rainfall, thunderstorms, and lightning. The sky will be partly cloudy, with temperatures between 25°C and 33°C over the next two days.

"Chennai and nearby areas may experience thunderstorms and heavy showers," the IMD reported. "Temperatures will fluctuate between 25°C and 33°C with predominantly cloudy skies."

Since October, Chennai has reported a rainfall surplus of 43 cm—1% above normal. However, expected intense rainfall could significantly challenge the waterlogged city. Coastal districts from Tiruvallur to Ramanathapuram, including Puducherry and Karaikal, are bracing for heavy showers ranging from 64.5 mm to 115.5 mm, with wind speeds up to 55 km/h.

IMD forecasts indicate intensified rain activity along the coastal districts starting today. "The rains will pick up across Chennai, Kancheepuram, Tiruvallur, and Chengalpet from November 12," weather blogger Pradeep John commented, anticipating a wet week ahead.

IMD has issued alerts for multiple districts, escalating from 12 on November 12 to 27 by November 14. By November 15, heavy rainfall is expected along coastal areas and adjoining northern and southern districts. From November 16 onward, the rain is predicted to shift towards western and northern interior districts.

The rainfall is a much-needed relief in areas experiencing deficits. Kancheepuram recorded 19 cm since October 1, reflecting a 36% deficit, while Chengalpet has a 31% deficit with 25 cm of rainfall. In contrast, Chennai has seen a 1% excess at 43 cm, and Tamil Nadu overall recorded 26 cm, aligning with seasonal expectations.

As Tamil Nadu braces for heavy rains, air quality remains a pressing issue in northern cities like Delhi and Chandigarh. Due to seasonal temperature drops and stubble burning, the Air Quality Index (AQI) has fallen into the "very poor" category.

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