Deep depression formed over Northwest Bay: BMD

The low-pressure system over the North Bay and nearby areas moved west-northwest and gradually intensified -- first into a well-marked low, then into a depression -- over the Northwest Bay and the coasts of West Bengal and Bangladesh (near 21.3°N, 89.6°E) at 6:00am yesterday, according to the Bangladesh Meteorological Department (BMD).

It was likely set to move west-northwestwards and cross the West Bengal-Bangladesh coast on Friday afternoon.

Due to the depression over Northwest Bay and adjoining West Bengal and Bangladesh coasts, all maritime ports have been advised to keep hoisted local cautionary Signal No 3.

The monsoon trough extends from Rajasthan through Uttar Pradesh, Bihar, West Bengal, and the centre of the depression in Assam, stretching across the southern part of Bangladesh.

The monsoon is active over Bangladesh and strong over the North Bay, read the BMD updates.

Moreover, the Met office has forecast light to moderate rain in all divisions, including Dhaka, of the country in 24 hours commencing 9:00am yesterday.

"Light to moderate rain or thunderstorms accompanied by temporary gusty wind are likely at most places over Khulna, Barishal, Chattogram and Sylhet divisions and at many places over Rangpur, Rajshahi, Dhaka and Mymensingh divisions with moderately heavy to very heavy falls at places over Khulna, Barishal and Chattogram divisions," said a Met office bulletin.

Meanwhile, a mild heat wave is sweeping over Rangpur division and it may abate.

Day and night temperatures may fall slightly over the country, according to the BMD.

Khulna's Koyra experienced the highest 92 mm of rainfall in the last 24 hours, till 6:00am.

The country's highest temperature 37.2°C was recorded in Tetulia over the past 24 hours till 6:00pm on Thursday, while the lowest temperature 20.5°C was recorded in Bandarban till 6:00am yesterday.