Two cyclonic circulations are currently active over eastern and northern India. One lies over Gangetic West Bengal–Bangladesh region, while another is over West Bihar and nearby areas, influencing weather conditions across surrounding regions.

One cyclonic circulation is located 1.5 km above sea level over Gangetic West Bengal and nearby Bangladesh. Another one is active 0.9 km above sea level over West Bihar and its surrounding areas. Favourable winds and high moisture from the Bay of Bengal will likely cause thunderstorms in North Bengal and some parts of South Bengal. Meanwhile, hot and humid conditions will likely continue in the western districts of South Bengal. On Wednesday, many places in Darjeeling, Jalpaiguri, Kalimpong, Alipurduar, and Cooch Behar districts will likely see light to moderate rain with thunderstorms. A few other places in the remaining districts of North Bengal might also get some rain. These districts are very likely to receive light to moderate rain with thunderstorms on Thursday, Friday, and Saturday as well. A few places in the other districts of North Bengal may also experience rainfall. Additionally, one or two places in Darjeeling, Jalpaiguri, and Alipurduar districts have a high chance of heavy rainfall. The weather office has forecast heavy to very heavy rain in all these northern districts until Tuesday. The rain will come with thunderstorms and gusty winds blowing at speeds of 40 to 50 km/h in all districts. Meanwhile, on Wednesday, Birbhum, Purba Bardhaman, Nadia, and Murshidabad may receive light rain. Storms with speeds of 50 to 60 km/h could also occur. Scattered rains with gusty winds of 40 to 50 km/h will blow through Jhargram, Paschim Medinipur, Paschim Bardhaman, Purulia, Bankura, and Hooghly. On Thursday, the forecast predicts scattered rain with thunderstorms for Birbhum, Nadia, and Murshidabad. On Friday, along with these districts, Purba Bardhaman and Purulia will also experience thunderstorms. An alert for scattered rain and gusty winds is in place for all these districts until Monday.