September 2025 Kolkata cloudburst
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| Date | start date 23 september 2025 |
|---|---|
| Time | 12:00 am to 5:00 am as per kolkata alipur meterogical department (IST) |
| Location | Kolkata, West Bengal, India |
| Type | Flash flood |
| Cause | very heavy rain |
| Deaths | 12[1] |
| Non-fatal injuries | 30+ |
| Missing | 2 |
On 23 September 2025, an intense cloudburst occurred in Kolkata, India, causing widespread waterlogging and flash floods around the city. The incident caused 9 deaths in Kolkata and 2 deaths in nearby districts, 30 injuries and at least 2 people left missing. Because of the heavy rainfall, many areas of Kolkata including Bansdroni, Bijoygarh, Jadavpur and Garia were waterlogged for three days.[2]
Following the commencement of preparations for Kolkata's most celebrated festival, Durga Puja, a strong cloudburst occurred in the early morning hours of September 23, 2025, causing severe flash floods and damage across the city. At least 9 people were reported dead due to electrocution. Fatalities were reported across different parts of Kolkata, with one death each in Gariahat, Garfa, Ekbalpur, Beniapukur, Shakespeare Sarani, Netajinagar, Haridevpur, Narendrapur, and Behala .[3][4]
Meteorological observation
Indian Meteorological Department recorded heavy rainfall throughout the city. The southern and eastern parts of the city experienced the most intense rainfall. The Kolkata Municipal Corporation reported that Garia Kamdahari recorded 332 mm of rain in just a few hours. Other areas recorded significant rainfall, including Jodhpur Park with 285 mm, Kalighat 280 mm, Topsia 275 mm, Ballygunge 264 mm, Alipore 251 mm and Thantania in north Kolkata 195 mm.[5] In addition to Kolkata, heavy rainfall affected several surrounding suburban areas and nearby cities. According to a bulletin released by the India Meteorological Department (IMD), Basirhat received 109 mm of rainfall and Barrackpore received 71 mm of rainfall.[6]
