Archive · 2 Sep 2026
Heavy Rain Soaks Calcutta as Low-Pressure System Lingers
Calcutta received very heavy rain after a weather system stayed over the area longer than expected.
The rain started on Monday night and became strongest on Tuesday morning.
South Calcutta received more rain than northern areas.
Some roads and neighborhoods became covered with water.
Lightning and loud thunder accompanied the heaviest showers.
Weather officials said strong monsoon winds brought plenty of moisture.
Heat near the ground helped create powerful clouds.
The rain was expected to become less intense from Wednesday morning.
Rain began Monday night and intensified in Calcutta between Tuesday morning and early afternoon.
Alipore recorded more than 70mm between 8:30am and 1pm, and about 90mm in 24 hours.
Kolkata Municipal Corporation stations recorded 122mm in Jodhpur Park, 97mm in Garia and 91mm on Southern Avenue.
Heavy rain, lightning and thunder caused waterlogging on several major roads, especially in south Calcutta.
The low-pressure system lingered over south Bengal instead of moving toward Jharkhand, with showers expected to weaken from Wednesday morning.
- Who
- Calcutta residents, the Kolkata Municipal Corporation and meteorological officials were affected or involved.
- What
- A lingering low-pressure system brought heavy rain, lightning, thunder and waterlogging to Calcutta.
- When
- Rain began Monday night, intensified on Tuesday morning and was expected to weaken from Wednesday morning.
- Where
- Calcutta and surrounding areas of Gangetic south Bengal, with the heaviest rain in south Calcutta.
- Why
- The low-pressure system remained over south Bengal, while strong monsoon moisture and surface heat formed powerful thunderclouds.
- Heaviest period
- Tuesday from 8:30am to 1pm
- Alipore rainfall
- More than 70mm during the heaviest period and about 90mm over 24 hours
- Highest KMC reading
- 122mm in Jodhpur Park
- Other KMC readings
- 97mm in Garia and 91mm on Southern Avenue
- Northern comparison
- Dum Dum recorded about 27mm from Tuesday morning to afternoon
- Waterlogging
- Reported on AJC Bose Road, Sarat Bose Road, Tollygunge Circular Road, Park Circus Connector, Central Avenue and Rash Behari Avenue Connector
- Forecast
- Rain intensity was expected to decrease from Wednesday morning