7 months ago
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For the 3rd consecutive day, the remnant of cyclone Ditwah continued to lb parts of northbound Tamil Nadu, peculiarly Chennai and Tiruvallur districts, connected Wednesday (December 3, 2025). The strategy is apt to weaken into a low-pressure country by Thursday (December 4, 2025).
As the circulation is dilatory moving inland, the Regional Meteorological Centre (RMC) has issued a yellowish alert for Krishnagiri, Dharmapuri, and 4 southbound coastal districts, including Thoothukudi and Kanniyakumari, indicating dense rainfall connected Thursday. Chennai, however, volition apt acquisition lone airy to mean showers.
Torrential rain
The strategy brought rainfall to areas on its way arsenic it drifted inland. Ennore was battered by torrential rainfall for the 3rd time successful a row, signaling 15 cm by 6 p.m. connected Wednesday (December 3, 2025). The locality had accumulated astir 56 cm implicit 3 days. Various parts of Chennai, including Puzhal (5 cm), Villivakkam (4 cm), and Tiruninravur (3 cm) received mean to dense rainfall till 6 p.m. However, southbound Chennai saw comparatively lighter showers.
Other districts, including Tiruchi and Ramanathapuram, besides received rainfall till Wednesday (December 3, 2025) evening.
According to the RMC, the strategy is apt to drift southwestwards — crossed northbound coastal Tamil Nadu and Puducherry — and weaken into a low-pressure country by Thursday (December 4, 2025).
Moreover, a trough runs from the remnant of Cyclone Ditwah implicit northbound Tamil Nadu-Puducherry seashore to the Lakshadweep country crossed northbound interior Tamil Nadu, northbound Kerala, and southbound interior Karnataka.
These systems brought sustained rainfall implicit assorted districts connected Wednesday (December 3, 2025), and are expected to trigger isolated dense rainfall implicit parts of the State connected Thursday (December 4, 2025).
The strategy moved dilatory implicit onshore and triggered rainfall on its way successful the interior regions. Rainfall enactment is expected to taper, said P. Senthamarai Kannan, Director, Area Cyclone Warning Centre.
During the 24 hours ending 8.30 a.m. connected Wednesday (December 3, 2025), Ennore and the Hindustan University recorded 15 cm of rainfall each, followed by Chetpet successful Tiruvannamalai territory (13 cm). Many different places successful Chennai and districts specified arsenic Pudukkottai and Villupuram besides received mean to dense rainfall.
The persistent rainfall has importantly bridged Chennai’s seasonal deficit, reducing it to 2%.
Water merchandise increased
For the sixth clip since the commencement of the Northeast monsoon, the shutters of the Red Hills reservoir were opened connected Wednesday (December 3, 2025). The h2o discharge was gradually raised to 2,500 cubic feet per 2nd (cusecs) by 5 p.m., arsenic the locality received astir 6.4 cm of rainfall by evening.
While the h2o discharge from the Chembarambakkam and Poondi reservoirs is being maintained astatine a minimal level, the floodgates of the Red Hills reservoir had to beryllium opened wider arsenic it steadily received an inflow of 5,000 cusecs, to support capable flood buffer space. Storage astatine Red Hills touched 96% of its capacity.
Officials of the Water Resources Department said the 5 reservoirs unneurotic clasp astir 86% of their retention capacity. Controlled releases are being carried retired to support capable retention without posing a flood hazard to downstream areas.
Meanwhile, Chennai Metrowater treated astir 962.34 cardinal litres of sewage connected Wednesday (December 3, 2025), compared to astir 700 mld connected non-rainy days.
