Overview

• Kolkata recorded 251.4 mm of rain in 24 hours, the heaviest single‑day total in decades, with an hourly peak of 98 mm that fell just short of cloudburst criteria, according to the IMD.
• Metro services were suspended between Shahid Khudiram and Maidan with truncated runs elsewhere, suburban rail lines faced widespread halts and rescheduling, and the airport reported roughly 30 flight cancellations with dozens more delayed.
• Reports put rain‑related fatalities at no fewer than four and as many as ten, many from electrocution, as Chief Minister Mamata Banerjee called the downpour unprecedented and pressed power utility CESC over safety and compensation.
• The IMD forecasts continued heavy rain across south Bengal through Wednesday and signals a fresh low‑pressure system likely around September 25 that could sustain wet conditions.
• Flooding swamped Durga Puja preparations with pandals and workshops waterlogged, while the city pumped out inundated neighborhoods that saw exceptional local totals such as 332 mm at Garia Kamdahari and 285 mm at Jodhpur Park.