The India Meteorological Department (IMD) has issued a warning of heightened thunderstorm activity across West Bengal on April 9. Light to moderate rain is likely in Kolkata on Thursday. In a press release dated April 8, it said, "Due to favourable wind pattern and strong moisture incursion from Bay of Bengal, enhanced thunderstorm activity very likely to occur over some districts of West Bengal during 08-09th April, 2026."
According to the Regional Meteorological Centre in Kolkata, an east–west trough extending from northwest Uttar Pradesh to Manipur, along with an upper air cyclonic circulation over Chhattisgarh, has created favourable conditions for widespread thunderstorms across the state.
IMD Weather Update For Kolkata And Other Places
As per the thunderstorm warning for South Bengal on April 9, light to moderate rain is very likely over Kolkata, East Midnapore, North and South 24 Parganas, Howrah, Nadia districts and likely to occur at a few places over the rest districts of South Bengal with thunderstorm, lightning and wind speed reaching 30-40 kmph.
Several districts in North Bengal, including Darjeeling, Jalpaiguri, Kalimpong, Cooch Behar and Alipurduar, are set to receive fairly widespread rain and thundershowers on April 9. Thunderstorms accompanied by lightning and winds of up to 50 kmph may develop in isolated areas.
Light to moderate rainfall is expected to continue in Darjeeling, Alipurduar and other North Bengal regions over April 10-14.
Weather conditions are forecast to improve in South Bengal from April 10 onwards, with rainfall becoming more isolated and dry weather prevailing across most districts between April 11 and April 12.
Daytime temperatures are expected to remain largely unchanged on April 9, followed by a gradual rise of 4–6°C across the state over the subsequent 4 days.
The IMD has cautioned that thunderstorms may lead to lightning strikes, damage to temporary structures, uprooting of trees, and disruption to power and communication lines. Standing crops may also be affected, while reduced visibility could impact traffic in urban areas.
Residents have been advised to remain indoors during thunderstorms, avoid sheltering under trees or near electric poles, and steer clear of water bodies.
Fishermen have been warned against venturing into the sea along and off the West Bengal and north Odisha coasts for the next 24 hours due to squally winds reaching up to 60 kmph.
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