Local cautionary Signal No 3 for maritime ports
The maritime ports of Chittagong, Cox's Bazar, Mongla and Payra have been advised to hoist local cautionary Signal No 3 as a low pressure over the North Bay has turned into a well-marked low.
The low pressure over the North Bay and the adjoining area now lies over the southwestern part of Bangladesh and adjoining area as a well-marked low, said a Met Office bulletin on Wednesday.
Under its influence, deep convection is taking place and a steep pressure gradient lies over North Bay and adjoining areas, it said.
Squally weather may affect the maritime ports, North Bay and adjoining coastal areas of Bangladesh.
All fishing boats and trawlers over North Bay have been advised to remain close to the coast and proceed with caution till further notice.
The depression is likely to move Northwestwards. The axis of the monsoon trough runs through Rajsthan, Hariyana, Uttar Pradesh, Bihar, Gangetic West Bengal, the centre of the well-marked low to Assam.
One of its associated troughs extends up to North Bay.
According to the regular weather bulletin, light to moderate rain or thundershowers accompanied by temporary gusty or squally wind is likely to occur at most places over Rajshahi, Khulna, Barisal, Chittagong, Dhaka and Sylhet divisions and at many places over Rangpur and Mymensingh divisions.
Heavy to very heavy falls is also likely at different places around the country.
Day and night temperatures may fall slightly over the country, said the bulletin.