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Published : 02 Oct 2025, 07:35 PM
A deep depression over the Bay of Bengal is set to bring heavy to very heavy rainfall across Bangladesh, with risks of flash floods, landslides, and waterlogging in major cities.
In a special weather bulletin issued on Thursday afternoon, the Bangladesh Meteorological Department said the system is moving north-northwest and is expected to cross the Odisha-Andhra coast between Gopalpur and Paradip around 9pm.
At noon, the storm centre was located 835km southwest of Chattogram seaport, 810km from Cox’s Bazar, 665km from Mongla, and 685km from Payra, as it hovered over the northwest Bay and adjoining west-central Bay.
The system has intensified sea conditions, generating strong pressure gradients over the northern Bay and triggering gusty winds near the centre.
Sustained wind speeds reached 50kmph, rising to 60kmph in gusts, with rough seas reported within a 48km radius.
The Met Office advised Chattogram, Cox’s Bazar, Mongla, and Payra seaports to hoist local cautionary signal No. 3, while fishing boats and trawlers in the northern Bay have been instructed to remain in safe harbour until further notice.
Forecasts show that between Thursday 3pm and the next 48 hours, Rangpur, Rajshahi, Dhaka, Mymensingh, Khulna, Barishal, Chattogram, and Sylhet divisions may experience between 44–88mm (heavy) and up to 188mm (very heavy) rainfall within 24 hours.
As a result, temporary waterlogging may occur in parts of Dhaka and Chattogram, while landslides are possible in hilly areas of the Chattogram Division, the bulletin warned.
The weather system developed from a low-pressure area over the Bay on Wednesday, intensified into a depression by night, and strengthened into a deep depression by Thursday morning.
Asked about the cyclone risk, meteorologist Shahnaz Sultana told bdnews24.com in the afternoon: “It will cause heavy to very heavy rainfall.”
Separately, the Flood Forecasting and Warning Centre of the Bangladesh Water Development Board has warned of short-term flooding in low-lying areas near the Muhuri, Silonia, and Feni rivers in Feni district, due to rising river levels.
