A fresh spell of pre-monsoon instability is set to disrupt otherwise warm and dry conditions across southern West Bengal, with the meteorological office issuing a rain alert for several districts from Sunday onward. The evolving system, linked to a western disturbance interacting with moisture-bearing winds, is expected to trigger thunderstorms across parts of the state a development with implications for urban mobility, construction schedules and peri-urban agriculture.
According to officials at the Alipore weather centre, clear skies are likely to persist through Friday and Saturday in much of South Bengal. However, a shift in wind patterns and upper-air circulation is forecast to increase atmospheric instability by the weekend. Districts including Jhargram, East and West Midnapore, East and West Burdwan, Birbhum, Murshidabad, Nadia and Hooghly may witness light to moderate rainfall accompanied by lightning from Sunday. Activity could intensify on Monday before tapering midweek. For Kolkata, where maximum temperatures have hovered above 33°C and humidity levels have fluctuated sharply, the rain alert comes amid rising night-time temperatures a sign that the lingering winter phase is fading. While daytime readings remain near seasonal averages, higher moisture levels are expected to make conditions feel warmer before rainfall offers temporary relief.
North Bengal is also likely to see scattered thunder activity, particularly in the Darjeeling hills and adjoining districts such as Kalimpong and Jalpaiguri. Rainfall may extend to Cooch Behar and Alipurduar early next week. However, meteorologists indicate that most areas will experience brief, localised spells rather than prolonged showers. Weather analysts attribute the changing pattern to a cyclonic circulation over Northeast Assam and another trough extending from Odisha across central India, interacting with a newly active western disturbance over northern India. Such transitional systems are typical during seasonal changeovers but can generate sharp, short-duration storms that challenge city infrastructure. Urban planners say these intermittent storms test drainage networks, traffic management systems and construction safety protocols.
In rapidly expanding districts on Kolkata’s periphery where real estate activity and road upgrades are underway even short bursts of rain can slow project timelines and affect informal workers. The recurring rain alert also underscores the need for climate-responsive urban planning. As eastern Indian cities experience greater variability in rainfall intensity, experts argue that stormwater design standards, building codes and emergency preparedness must evolve to accommodate more erratic weather With thunderstorms forecast over the coming days, civic agencies are expected to monitor waterlogging-prone zones and ensure rapid response systems remain active. For residents and businesses alike, the approaching spell serves as an early reminder that climate volatility is increasingly shaping daily urban life.
