Tamil Nadu is facing an expanded heavy-rain alert after Periyanaickenpalayam in Coimbatore district recorded 18.4 cm of rain in the past 24 hours, with the Chennai Meteorological Centre warning of heavy rain across 14 districts, Puducherry and Karaikal.
The weather centre said the northeast monsoon has intensified over the state. Heavy and moderate rain has been reported across several parts of Tamil Nadu, including Chennai and surrounding areas. The warning places districts across the Cauvery delta and northern coastal belt among the areas that could receive heavy rain on October 20.
The districts named in the bulletin include Pudukkottai, Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai, Cuddalore and Villupuram, along with other districts covered by the 14-district alert. Puducherry and Karaikal have also been included in the forecast for heavy rain.
The Coimbatore rainfall figure provides the clearest measure of the intensity already recorded. The 18.4 cm total was measured at Periyanaickenpalayam during the 24-hour period covered by the bulletin. Such concentrated rainfall can place pressure on local drainage systems, roads and low-lying urban areas, although the supplied weather report did not detail any disruption, flooding or damage.
The forecast also extends into October 21, when Theni, Tenkasi, Virudhunagar, Tirunelveli and Kanniyakumari districts could receive heavy to very heavy rain. Heavy rain is also expected in the delta districts, Madurai, Dindigul, Thoothukudi and Ramanathapuram, according to the Chennai Meteorological Centre.
For Chennai and its suburbs, the centre forecast generally cloudy skies on October 20 and 21, with a possibility of moderate to heavy rain accompanied by thunder and lightning in some areas. The bulletin did not specify which city neighbourhoods could be affected or announce any separate civic restrictions.
The forecast has operational implications for cities and towns where short-duration intense rain can affect road movement, drainage, power infrastructure and daily commuting. However, the report supplied for this story contains no information on traffic diversions, school closures, public transport changes, municipal preparedness or emergency measures.
The weather centre also warned of squally winds over Kerala, coastal Karnataka and the Lakshadweep area on October 22 and 23. Wind speeds in those areas could reach 35 to 45 kmph, with occasional gusts up to 55 kmph. The next stated milestones are the heavy-rain forecast for Tamil Nadu on October 20 and 21 and the wind warning for neighbouring regions on October 22 and 23.
