Temporary westerly/northwesterly 'Kalbaishaki' squall coupled with rain or thundershowers is likely to strike 18 regions during the next 15 hours from 3:00pm on Saturday.
Kalbaishaki squall with a speed of 60-80 kilometres per hour or more may hit the regions of Rangpur, Dinajpur, Rajshahi, Pabna, Bogura, Tangail, Mymensingh, Faridpur, Dhaka, Jashore, Kushtia, Khulna, Barishal, Patuakhali, Noakhali, Cumilla, Chattogram and Sylhet, said a Met office warning.
Meanwhile, rain or thundershowers accompanied by temporary gusty/squally wind is likely to occur at many places over Barishal, Khulna, Rajshahi, Rangpur, Dhaka, Mymensingh and Sylhet divisions and at a few places over Chattogram division in the next 24 hours till 6:00pm on Sunday.
There might be hails at isolated places during the period, Met office said.
Day and night temperature may remain nearly unchanged over the country.