Torrential rains lash Tamil Nadu as Northeast monsoon intensifies

With in a single day rains bringing heavy inflows, the floodgates of two main reservoirs of Chennai at Chembarambakkam and Poondi have been opened wider to control the water degree and forestall flood danger on Wednesday (October 22, 2025).

The well-marked low stress space that lies over southwest Bay of Bengal off the Tamil Nadu coast introduced torrential rains in a number of components of Tamil Nadu. The 90 main water our bodies within the State now have a storage of 87.7% of their complete capability of 224.34 thousand million cubic ft.

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Likelihood of despair

As it continues to maneuver northwestwards, the Regional Meteorological Centre (RMC), Chennai has predicted a risk of the system gathering power as a despair over the southwest and adjoining westcentral Bay of Bengal off north Tamil Nadu and south Andhra Pradesh coasts by Wednesday night.

It is more likely to transfer throughout north Tamil Nadu, Puducherry and south Andhra Pradesh coasts through the subsequent 12 hours.

Water our bodies

Chembarambakkam reservoir, Chennai’s key ingesting water supply unfold over 25.51 sq.km., obtained an influx of two,170 cubic ft per second (cusecs) of water. This additionally consists of water diverted from Poondi reservoir by hyperlink canal.

Officials of the Water Resources Department stated the water our bodies upstream feeding the reservoir are quick filling up. The water degree at Chembarambakkam reservoir stands at 20.84 ft on Wednesday (October 22) in comparison with 18.52 ft on October 18.

With storage rising to 2,815 millon cubic ft (mcft) in opposition to 3,645 ft, the division has elevated water discharge from 100 cusecs to 500 cusecs into Adyar river on Wednesday morning. The measure would allow steadiness storage and accommodate heavy inflows. The division has issued flood warning to areas downstream and alongside Adyar river

Similarly, the water launch from Poondi reservoir has been stepped as much as 4,500 cusecs to take care of its water degree at 33.05 ft, two ft decrease than full degree.

Rainfall obtained

Northeast monsoon in its vigorous mode pounded a number of districts throughout the State. Periyakalapet in Puducherry recorded extraordinarily heavy rainfall of 25 cm within the 24 hours ending 8.30 a.m. Various climate stations and rain gauges in and round Puducherry, Villupuram and Cuddalore obtained very heavy rainfall.

Widespread, intense rainfall lashed many different districts like Chennai, Kallakurichi, Tiruchi, Karur and Chengalpattu too.

Forecast

In its nowcast, the RMC has predicted mild to reasonable rainfall to cowl north districts of Tamil Nadu together with Chennai, Ranipet and Cuddalore and in addition Kanniyakumari district other than Puducherry until 1 p.m.

The RMC has up to date forecast and restricted purple alert to Ranipet and Tiruvallur districts until 8.30 a.m. on Thursday (October 23). Many different north Tamil Nadu districts together with Chennai have been sounded orange alert for a similar interval.