• Source:JND
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Weather Update: South Bengal and the capital city Kolkata, experienced widespread rainfall on Saturday, raising concerns about potential flooding due to water releases from the DVC and Panchet dams. Heavy rains caused waterlogging on the runway of Netaji Subhash Chandra Bose International Airport after relentless downpours affected the city and surrounding districts, driven by a low-pressure area that developed into a deep depression. The India Meteorological Department (IMD) has issued a yellow alert for thunderstorms and lightning today.

Weather Update: Kolkata Weather Forecast

From August 4 to August 9, the weather in the area is expected to be generally cloudy with light rain and occasional thundershowers. On August 4, the temperature will range from 26 degree Celsius to 30 degree Celsius, with similar temperatures forecasted for August 5, where it will be 27 degree Celsius to 31 degree Celsius. On August 6, the temperature will be between 26 degree Celsius and 30 degree Celsius, with one or two spells of rain or thundershowers expected. The same conditions are anticipated for August 7, with temperatures ranging from 26 degree Celsius to 29 degree Celsius. From August 8 to August 9, temperatures will remain around 26 degree Celsius to 29 degree Celsius, with a possibility of rain or thunderstorms.

This depression has now moved over north Jharkhand and adjacent regions, resulting in showers across Bihar, Jharkhand, and parts of south Bengal. An upper-air east-west trough extending from the centre of the depression to south Assam has triggered additional rain across both south and north Bengal, according to the Regional Meteorological Centre (RMC) in Alipore.

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Kolkata recorded intermittent rain, accumulating to 26.5 mm between Friday and Saturday evening, according to a TOI report. However, the northern outskirts of the city experienced heavier showers, with Dum Dum receiving 100 mm and Salt Lake and Diamond Harbour each receiving 80 mm. The Met office predicts that Kolkata will continue to experience rain for at least the next four to five days.

The ongoing rains have intensified due to the presence of the monsoon trough, which is currently situated over Murshidabad. HR Biswas, a weather scientist at RMC, noted that it rests across the northern limit of south Bengal. "The combined effect of the monsoon trough and the east-west trough will lead to consistent rainfall across most parts of Bengal in the coming days. While most areas can expect light to moderate rain, some parts of south Bengal may experience thunderstorms," he added.

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The cloudy weather and rain have lowered temperatures, with the mercury hitting 29.2 degree Celisu on Saturday, while the minimum temperature was just four degrees cooler at 25.8 degree Celsius.

In north Bengal, heavy rains since Thursday disrupted daily life and worsened conditions in Sikkim, Darjeeling, and Kalimpong. These rains have triggered significant landslides along NH-10, severing major routes connecting Gangtok and Kalimpong with Siliguri. Weather officials have issued an orange warning for the districts of north Bengal for the next five days, urging residents to stay alert.