After pounding north Tamil Nadu, remnant of Cyclone Ditwah drifts inland; metropolis to get mild rain immediately

For the third consecutive day, the remnant of cyclone Ditwah continued to pound components of north Tamil Nadu, significantly Chennai and Tiruvallur districts, on Wednesday (December 3, 2025). The system is more likely to weaken right into a low-pressure space by Thursday (December 4, 2025).

Because the circulation is slowly shifting inland, the Regional Meteorological Centre (RMC) has issued a yellow alert for Krishnagiri, Dharmapuri, and 4 south coastal districts, together with Thoothukudi and Kanniyakumari, indicating heavy rainfall on Thursday. Chennai, nevertheless, will doubtless expertise solely mild to reasonable showers.

Torrential rain

The system introduced rainfall to areas alongside its path because it drifted inland. Ennore was battered by torrential rain for the third day in a row, recording 15 cm by 6 p.m. on Wednesday (December 3, 2025). The locality had amassed almost 56 cm over three days. Numerous components of Chennai, together with Puzhal (5 cm), Villivakkam (4 cm), and Tiruninravur (3 cm) acquired reasonable to heavy rainfall until 6 p.m. Nonetheless, south Chennai noticed comparatively lighter showers.

Different districts, together with Tiruchi and Ramanathapuram, additionally acquired rain until Wednesday (December 3, 2025) night.

In response to the RMC, the system is more likely to drift southwestwards — throughout north coastal Tamil Nadu and Puducherry — and weaken right into a low-pressure space by Thursday (December 4, 2025).

Furthermore, a trough runs from the remnant of Cyclone Ditwah over north Tamil Nadu-Puducherry coast to the Lakshadweep space throughout north inside Tamil Nadu, north Kerala, and south inside Karnataka.

These techniques introduced sustained rainfall over varied districts on Wednesday (December 3, 2025), and are anticipated to set off remoted heavy rainfall over components of the State on Thursday (December 4, 2025).

The system moved slowly over land and triggered rain alongside its monitor within the inside areas. Rainfall exercise is predicted to taper, stated P. Senthamarai Kannan, Director, Space Cyclone Warning Centre.

In the course of the 24 hours ending 8.30 a.m. on Wednesday (December 3, 2025), Ennore and the Hindustan College recorded 15 cm of rainfall every, adopted by Chetpet in Tiruvannamalai district (13 cm). Many different locations in Chennai and districts comparable to Pudukkottai and Villupuram additionally acquired reasonable to heavy rainfall.

The persistent rainfall has considerably bridged Chennai’s seasonal deficit, decreasing it to 2%.

Water launch elevated

For the sixth time for the reason that begin of the Northeast monsoon, the shutters of the Crimson Hills reservoir have been opened on Wednesday (December 3, 2025). The water discharge was step by step raised to 2,500 cubic toes per second (cusecs) by 5 p.m., because the locality acquired almost 6.4 cm of rain by night.

Whereas the water discharge from the Chembarambakkam and Poondi reservoirs is being maintained at a minimal degree, the floodgates of the Crimson Hills reservoir needed to be opened wider because it steadily acquired an influx of 5,000 cusecs, to take care of ample flood buffer area. Storage at Crimson Hills touched 96% of its capability.

Officers of the Water Assets Division stated the 5 reservoirs collectively maintain almost 86% of their storage capability. Managed releases are being carried out to take care of adequate storage with out posing a flood danger to downstream areas.

In the meantime, Chennai Metrowater handled almost 962.34 million litres of sewage on Wednesday (December 3, 2025), in comparison with round 700 mld on non-rainy days.