A fresh low-pressure area over the Bay of Bengal is likely to bring more rain to south Bengal over the next couple of days.
Calcutta is tipped to get a spell of heavy rain on Monday, when the system is expected to hit land on the Odisha-Bengal coastline, according to the Met forecast.
Sunday is also likely to be cloudy, with multiple spells of rain.
“A low-pressure area lies over east-central and adjoining northeast Bay of Bengal. It is likely to move northwestwards and concentrate into a depression over northwest Bay off the Odisha-Bengal coastline over the next 48 hours,” said a Met release.
“After hitting land, the system is likely to move across Odisha and north Chhattisgarh. Under its influence, the districts of south Bengal are likely to see enhanced rainfall activity from September 11 to 14,” said a Met official.
In Calcutta, the sky was cloudy for most of Saturday. The rain was negligible, with the Met office recording around 5mm in Alipore.
“The intensity and spread of the showers are likely to go up from Sunday. The maximum impact of the system will be on East and West Midnapore and South 24-Parganas. In Calcutta also, a spell of heavy rain is not ruled out,” said G.K. Das, the director of IMD Calcutta.
The Met office has also issued a warning for fishermen in the coastal areas.
The weather in Calcutta is set to improve from Tuesday, said Das.
“A system over north Bay of Bengal, which is closer to the Bangladesh coast, usually has more impact on Calcutta. The present low-pressure area, though closer to the southern tip of Bangladesh at the moment, will keep moving away, towards the northwest Bay,” said Das.
The system is expected to generate wind speeds of 30kmph in the city when it crosses land.