A low-pressure area forming over the southeast Bay of Bengal is likely to intensify into a cyclonic storm by October 27, bringing heavy rainfall to parts of Odisha, West Bengal and Jharkhand for three days starting Monday, according to the India Meteorological Department (IMD).
Officials said the system is moving west-northwest and will gradually strengthen — first into a depression by October 25, then a deep depression by October 26, and eventually into a cyclonic storm by October 27 morning over the southwest Bay of Bengal.
“It’s too early to say where the cyclone will make landfall, but Odisha may see heavy to very heavy rain from October 27 to 29, especially along coastal districts,” said Manorama Mohanty, Director of the Bhubaneswar Meteorological Centre.
Odisha on High Alert as IMD Issues Yellow Warning
The IMD has issued a yellow alert for several districts in Odisha, warning of widespread rainfall and thunderstorms over the next few days. The alert will expand to cover the entire state by Monday.
Odisha’s Revenue and Disaster Management Minister Suresh Pujari said the government is on full alert and has initiated preparedness measures.
“October is a cyclone-prone month. There’s no need to panic,” he assured, adding that coastal evacuation plans are ready if the system intensifies further.
In West Bengal, the developing weather system is expected to bring heavy rainfall between October 28 and 30 to South and North 24 Parganas, Purba and Paschim Medinipur, Jhargram, and Howrah.
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Kolkata and Hooghly may experience thunderstorms and lightning on October 28, while northern districts such as Jalpaiguri, Alipurduar, Cooch Behar, Dakshin Dinajpur, and Malda are forecast to receive intense rain between October 29 and 30.
Local authorities have been asked to monitor low-lying areas and prepare for potential waterlogging and power disruptions.
Jharkhand’s Chhath Puja Festivities May See Cloudy Skies, Light Rain
In neighboring Jharkhand, where preparations for Chhath Puja are underway, the IMD has forecast cloudy skies and light rainfall in southern districts.
“After October 28, the last day of Chhath, conditions may worsen, bringing heavier rainfall that could continue until October 30,” IMD meteorologist Abhishek Anand told India Today TV.
He added that from early November, the weather across the eastern states is expected to return to normal.
Meteorologists say this developing system could be the first major post-monsoon cyclone of the 2025 season. Satellite data shows increasing convective activity over the Bay of Bengal, suggesting steady intensification.
“We are monitoring wind shear, sea surface temperatures, and moisture convergence — all conditions currently favor cyclone formation,” said an IMD official.
Residents in coastal districts of Odisha, Bengal, and north Andhra Pradesh have been advised to stay updated through official weather bulletins and avoid venturing into the sea from October 26 onwards.
