With only a few days left for the official end of the Southwest monsoon, the State has received normal rainfall of 31 cm since June 1.
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Heavy rainfall is expected to remain confined to a few districts along the Western Ghats till Sunday. The Regional Meteorological Centre (RMC), Chennai, has forecast a dip in the thunderstorm activity in most parts of Tamil Nadu this week.
In its forecast, the RMC noted heavy rainfall may occur in parts of Nilgiris district and Ghat areas of Coimbatore district on Thursday. Theni and Tenkasi districts are also likely to receive intense spells on Friday. A similar rainfall pattern may persist till the weekend, while the rest of the State may see only isolated rainfall till the month-end.
During the past 24 hours ending 8.30 a.m. on Wednesday, Yercaud in Salem district registered the State’s highest rainfall (5 cm). Many other districts, including Tirunelveli and Kallakurichi, also received light to moderate rainfall.
Officials of the RMC said some of the Ghat areas recorded rainfall on Wednesday. Places like Salem, Valparai and Coimbatore, reported light rainfall till 6 p.m. B. Amudha, Head (Additional in charge), RMC, said a westerly wind surge can cause intense rainfall in Ghat areas when an upper air circulation prevails over east central Bay of Bengal.
A low pressure area is likely to form over north and adjoining central Bay of Bengal on Thursday, which may intensify into a depression, and expected to cross south Odisha-north Andhra Pradesh coasts around September 27.
On the successive weather systems developing in the Bay of Bengal, she said they may not have any direct impact on Tamil Nadu, except for cloudy weather in some places for a few hours. Chennai has chances of light rainfall in some areas on Thursday.
The reduced rainfall may also lead to a marginal increase in day temperatures across Tamil Nadu, Puducherry and Karaikal till September 28. In one or two places, the maximum temperature may rise two-three degree Celsius above normal. On Wednesday, Madurai airport recorded the State’s highest day temperature of 37 degree Celsius for the day.
With only a few days left for the official end of the Southwest monsoon, the State has received normal rainfall of 31 cm since June 1.
Published – September 25, 2025 04:09 am IST
