Maritime ports of Chattogram, Cox's Bazar, Mongla and Payra have been advised to hoist local cautionary signal no three as squally weather is likely to affect the maritime ports, North Bay and adjoining coastal areas of Bangladesh. "Under the influence of frequent thunderstorm activity, squally weather is likely to affect the maritime ports, North Bay and adjoining coastal areas of Bangladesh," said a Met office bulletin. All fishing boats and trawlers over the North Bay have been advised to proceed with caution until further notice.