A heavy to very heavy rainfall warning is in effect for today for the coastal region due to active monsoon, triggering a landslide warning for the hilly regions in Chattogram division.
The Bangladesh Meteorological Department warns that a low pressure is likely to form over West Bengal state of India and its adjacent area today amidst strong incursion of moisture from the Bay of Bengal.
The combination of a strong monsoon wind and a low pressure hovering over land could mean continued rain in many areas, particularly along the coast.
A spell of rainfall is called heavy when it rains between 44mm to 88mm in 24 hours and very heavy rainfall is beyond 88mm of rainfall.
Water stagnation in the Chattogram metropolitan area has also been warned.
The four maritime ports have been instructed to show local cautionary Signal Number Three since July 4 until further notice.
All fishing trawlers over the northern Bay of Bengal have been advised to stay close to the shore and proceed with caution until further notice.
In the 24 hours until 6:00pm Saturday, the BMD said, the highest maximum rainfall of 104mm was recorded in Teknaf.
The highest maximum temperature of 34.8C during the same time was recorded in Sreemangal.
The BMD said that the ongoing spell of rain was likely to continue through the next week. Dhaka is also likely to witness intermittent rain through July 16.