[REVISION HISTORY]

Tamil Nadu weather: monsoon rainfall and safety measures

22 recorded revisions of this situation.

What changed

2026-10-23 04:11 UTC → 2026-11-03 03:04 UTC · added ~~removed~~

Tamil Nadu weather: ~~alternating heatwaves~~ monsoon rainfall and ~~heavy rain~~ safety measures

Since early May 2026, Tamil Nadu has experienced alternating periods of intense rainfall, strong winds, and extreme heat. Following a period of heatwaves in July, weather patterns shifted toward unsettled conditions in August. In mid-August, the Regional Meteorological Centre forecast heavy rains for northern ~~districts, including Chengalpattu, Kanchipuram, Villupuram,~~ districts. By late September, the South-West monsoon remained active, bringing forecasts of rain, thunderstorms, and ~~Tiruvannamalai. Between August 17~~ gusty winds. By late October, the northeast monsoon and ~~August 19,~~ a ~~weak~~ low-pressure ~~circulation along~~ area in the ~~coast~~ Bay of Bengal triggered ~~forecasts for heavy~~ widespread disruption. Significant rainfall ~~and thunder~~ in ~~Chengalpattu, Villupuram,~~ Tamil Nadu, Puducherry, and ~~Cuddalore. By August 21, a wet spell was forecast~~ Kerala led to ~~last through August 27, driven by a cyclonic circulation over the Chhattisgarh-north Odisha region and an offshore trough. This period brought moderate rainfall, thunderstorms,~~ waterlogging, uprooted trees, and ~~gusty winds of 40-50 kmph to districts such as Chengalpattu,~~ flooded homes in cities like Chennai. In response, district administrations in Chennai, Tiruvallur, ~~and~~ Chengalpattu, Kancheepuram, ~~while heavy rain was predicted for the hilly areas of Coimbatore~~ Ranipet, Tenkasi, Kanniyakumari, and the Nilgiris. By August 27, the India Meteorological Department predicted light to moderate rainfall across seven districts, though northern inland temperatures were expected to rise by up to 3 degrees Celsius through August 30. Tirunelveli declared school holidays. In ~~early September, weather patterns remained unsettled. By September 2, moderate rain~~ Puducherry and ~~thunderstorms were forecast~~ Karaikal, Education Minister A. Namassivayam ordered holidays for ~~Chennai~~ all government and ~~surrounding districts. By September 5,~~ private schools. In early November, the ~~Regional Meteorological Centre forecasted light~~ Tamil Nadu government introduced new directives to ~~moderate rain and thunderstorms across various parts of the state, including~~ manage the ~~Western Ghats and southern districts. By September 6, widespread rainfall across 12 districts, including Sivaganga~~ monsoon season. The School Education Department issued safety guidelines requiring immediate inspections of school roofs, walls, and ~~Coimbatore, provided relief from intense heat, though concerns were raised regarding~~ drainage to prevent accidents, prohibiting the ~~impact~~ use of ~~rain on stored grain. In mid-September, weather instability continued. By late September,~~ buildings with structural defects. Additionally, the ~~South-West monsoon remained active, bringing forecasts of rain, thunderstorms,~~ Municipal Administration and ~~gusty winds. In late September, the Chennai Regional Meteorological Centre issued alerts~~ Water Supply Department approved rainwater harvesting guidelines. These instructions direct local bodies to build and maintain structures to capture rooftop runoff and surface water for ~~heavy rainfall~~ groundwater recharge across residential, industrial, and ~~thunderstorms.~~ public areas.

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