Bangladesh may see rainfall increase again nationwide between August 21 and 24 as the monsoon remains active, the Meteorological Department said. A land depression has weakened into a well-marked low over Jharkhand and adjoining Bihar in India and may merge with the monsoon trough, limiting its direct impact on Bangladesh.

Rainfall may ease somewhat on Thursday as the low weakens, although parts of Chattogram and Sylhet divisions could receive comparatively heavier rain. Elsewhere, isolated light to moderate rain or thundershowers with gusty winds are forecast. Recent rain caused waterlogging in low-lying areas of Chattogram, where 189 millimetres was recorded in 24 hours up to the morning of August 17, including 109 millimetres in the final three hours.

Authorities have withdrawn local cautionary signal number 3 at Chattogram, Cox’s Bazar, Mongla and Payra ports as Bay conditions have become calmer. Vessels have nevertheless been advised to operate cautiously. Forecasters said rain could lower daytime temperatures after a recent rise and warned people in Chattogram, Sylhet, Barishal and Khulna to remain alert for heavy rainfall.