The deaths in separate incidents have occurred in Beniapukur, Kalikapur, Netaji Nagar, Gariahat and Ekbalpur. These areas are spread across the central and southern parts of Kolkata. The waterlogging has disrupted traffic movement, as well as suburban rail and Metro services. In several low-lying parts of the city, water has entered homes and damaged property. Several schools have declared a rain holiday.

The intensity of rain was higher in the city's southern and eastern parts. According to data from the Kolkata Municipal Corporation, Garia Kamdahari recorded 332 mm of rain in a few hours, followed by Jodhpur Park at 285 mm, Kalighat at 280 mm of rain, Topsia at 275 mm, and Ballygunge at 264 mm.

In response, West Bengal Chief Minister Mamata Banerjee ordered all schools to remain closed and advised office-goers to stay home, citing public safety as the priority. Calcutta University and Jadavpur University cancelled examinations and classes, while Presidency University suspended all academic activity for the day. Several schools across the city declared a holiday, as flooded roads made commuting nearly impossible.  Healthcare services were not spared either. Major state-run hospitals experienced flooding, significantly disrupting medical services.

The Chief Minister also expressed concern over the role of the CESC (Calcutta Electric Supply Corporation), emphasizing the urgent need to ensure safe and uninterrupted power supply. Banerjee called for immediate on-ground action to prevent further accidents, as the city was lashed by an intense downpour lasting around five hours overnight, flooding several streets, lanes, and low-lying areas in what many described as an unprecedented deluge.

Public transport was severely affected. Buses were nearly absent from roads, stranding daily commuters, while metro services—the city's lifeline—faced disruptions, especially along the North-South corridor (Blue Line). Stations such as Mahanayak Uttam Kumar (Tollygunge) and Rabindra Sarobar were particularly impacted by water accumulation. Train services in the Sealdah South section were also suspended due to waterlogged tracks.

The timing of the downpour, coinciding with the onset of the Durga Puja season marked by Mahalaya on Sunday, has dampened the festive spirit. Several Puja pandals were waterlogged, adding to the chaos.