Overview

• India Meteorological Department has placed Chennai under a yellow alert through Sunday, September 20, with more showers expected.
• Forecasts point to intermittent moderate rain or thunderstorms across September 17–22, with partly cloudy periods between spells.
• The Regional Meteorological Centre earlier predicted light to moderate rain over isolated areas on Tuesday, September 16, and signaled continued activity through Thursday, September 18.
• RMC data showed notable overnight totals, including 42.8 mm at Nungambakkam, 47 mm at Virinjipuram KVK, and 46 mm at Hindustan University.
• Local reports noted waterlogging and slow traffic in parts of the city, with very intense thunderstorms flagged over the Chengalpattu–GST corridor and heavy bursts moving toward Kelambakkam–Mahabalipuram along the ECR.