KalimNews, Kolkata, Aug 31, 2025 : An upper-air cyclonic circulation has been observed over the northeast Bay of Bengal and the adjoining Myanmar coast, extending up to 5.8 kilometers above sea level and tilting southwestwards with height. This weather system is likely to intensify over the next 24 hours, leading to the formation of a low-pressure area in the northern Bay of Bengal. A trough running from this cyclonic circulation stretches from the northeast Bay of Bengal and Myanmar coast, reaching the northern coastal regions of Odisha, extending up to 1.5 kilometers above sea level.
The monsoon trough at mean sea level is currently passing through Ganganagar, Pilani, Datia, Satna, Daltonganj, and Digha, continuing southeastwards to the northeast Bay of Bengal. This alignment of weather systems is expected to bring light to moderate rainfall and thundershowers across most of South Bengal, with heavy to very heavy rainfall (ranging from 7 to 20 cm) predicted at one or two places in certain districts over the next two days. The meteorological conditions are likely to persist, leading to significant weather events in the coming week.
The detailed forecast and warnings for both North and South Bengal have been issued, with specific attention to the impact of thunderstorms, lightning, and gusty winds (speeding up to 30-40 km/h) that are expected to accompany the rainfall. Here are the warnings for the coming days:
North Bengal:
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01-09-2025: Light to moderate rain/thundershowers are very likely to occur at many places over North Bengal. Thunderstorms, lightning, and gusty winds (30-40 km/h) are expected at one or two places, particularly in Malda, South Dinajpur, Jalpaiguri, and Coochbehar districts.
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02-09-2025: Rainfall is expected to remain light to moderate, with heavy rainfall (7-11 cm) likely at one or two places over Alipurduar district. Thunderstorms, lightning, and gusty winds (30-40 km/h) will continue at one or two places across all districts of North Bengal.
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03-09-2025: Light to moderate rain/thundershowers are likely across most areas, with heavy rainfall expected in Jalpaiguri and Alipurduar. Thunderstorms, lightning, and gusty winds (30-40 km/h) are expected in these areas as well.
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04-09-2025 to 07-09-2025: Light to moderate rain/thundershowers will persist over many places, continuing the unsettled weather conditions throughout the week.
South Bengal:
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01-09-2025: Light to moderate rain/thundershowers are expected over most of South Bengal, with heavy to very heavy rainfall (7-20 cm) very likely in one or two places, particularly in South 24 Parganas. Heavy rainfall (7-11 cm) is also expected over North 24 Parganas, Kolkata, Howrah, Hooghly, East Midnapore, and West Midnapore. Thunderstorms, lightning, and gusty winds (30-40 km/h) will occur at one or two places across all districts of South Bengal.
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02-09-2025: Similar weather conditions are expected, with light to moderate rain/thundershowers over most areas, and heavy rainfall (7-11 cm) likely in East Midnapore, West Midnapore, South 24 Parganas, Jhargram, and Bankura. Thunderstorms and gusty winds will continue.
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03-09-2025: Light to moderate rain/thundershowers will continue over most places, with thunderstorms, lightning, and gusty winds expected in all districts.
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04-09-2025: Light to moderate rain is likely over many parts of South Bengal, with thunderstorms and gusty winds expected at one or two places, particularly in North 24 Parganas, South 24 Parganas, Nadia, Murshidabad, Birbhum, East Burdwan, and West Burdwan.
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05-09-2025: Continued light to moderate rain across South Bengal, with widespread thundershowers expected.
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06-09-2025 to 07-09-2025: Light to moderate rain is likely at a few places over South Bengal, bringing the weather to a more stable condition by the end of the week.
In light of these forecasted weather events, it is advised that the public remain cautious and follow local advisories. Authorities have urged residents to avoid outdoor activities during thunderstorms, secure vulnerable crops, and ensure proper drainage systems are in place to mitigate waterlogging. Road users are advised to exercise extra care during heavy rainfall, especially in urban areas prone to traffic disruptions.
The upcoming period promises to be a challenging one for the region, with heavy rains expected to affect daily life and agriculture. Both residents and authorities are on alert, preparing for potential impacts across Bengal.
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