On 20th September, parts of Kolkata woke up to severe waterlogging following a heavy downpour. The city went under the impact of twin cyclonic circulations- one under the Bay of Bengal and another in south Bangladesh.
Normal life was hit and commuters struggled to reach their destinations as many streets including Salt Lake, Alipore, Patipukur underpass and Kolkata airport were left waterlogged.
Reportedly, due to movement of Cyclonic circulation from North West Bay of Bengal to Gangetic West Bengal and strong moisture incursion, heavy rainfall is occurring over Kolkata and adjoining North + South 24 Paraganas, Howrah, Hooghly and East Medinipur.
On 18th September, India meteorological department had predicted fairly widespread to widespread rainfall over Gangetic West Bengal.
For now, the MET department had issued a yellow warning as it said that heavy rainfall activity is likely to continue for the next 5-6 hours.
While Kolkata received 20 mm rain till 5.30 pm on 19th September, Dum Dum recorded 12 mm and Salt Lake 52mm.