A nowcast orange alert has been issued for three districts in Tamil Nadu, with a yellow alert for several others. Light to moderate rainfall is expected across the region until October 25. Track weather updates here.

The weather department has forecast isolated heavy rainfall across Tamil Nadu, Puducherry, and Karaikal on October 18, 20, and 21.

Meteorological department’s nowcast put Chennai under a yellow alert. There could be moderate rain and thunderstorms until October 21. Residents are advised to stay prepared as the weather conditions may lead to isolated heavy rainfall in the region.

The India Meteorological Department issued an orange alert in seven Tamil Nadu districts including Chennai, Vellore and Ranipet.

Chennai: A flood alert has been declared in the Dharmapuri, Krishnagiri, and Tiruvannamalai districts of Tamil Nadu, where the Thenpennai River flows, following heavy rains in the river's catchment areas.

The weather department has warned of heavy rainfall in Tamil Nadu and its neighbouring areas for the next few days. The schools were shut due to the incessant rainfall in tech cities- Chennai and Bengaluru.

The India Meteorological Department (IMD) issued ‘nowcast rain alert’ for 5 districts of Tamil Nadu, namely Poonamallee, Sholinganallur, Thiruporur, Vandalur and Tambaram.