The Department of Meteorology states that data indicates an atmospheric disturbance over the South-East Bay of Bengal is expected to develop into a low-pressure area and subsequently intensify into a depression.
The Director General of the department, Ajith Wijemannage, stated that its impact is likely to affect the island on November 15, 16 and 17.
Accordingly, rainfall is expected to increase in the Northern, North Central and Eastern provinces.
However, the Director General added that sufficient data is currently unavailable to issue precise forecasts, noting that further studies will be conducted and necessary action will be taken to issue warnings if required.
He emphasised that if the low-pressure system intensifies into a depression and moves northwards along the eastern coast, the island will experience a severe impact.
Meanwhile, the Department of Meteorology announced this morning (10) that showers or thundershowers may occur at times in the Northern Province and Trincomalee District.
Showers or thundershowers are expected in other parts of the island after 1.00 p.m.
Heavy rainfall exceeding 100 mm is likely at some places in the Western, Sabaragamuwa, Central and Uva provinces, as well as in the Galle and Matara districts.
The department has requested the public to take necessary precautions to minimise damage caused by temporary strong winds and lightning during thundershowers.
Additionally, misty conditions may prevail at some places in the Western, Sabaragamuwa, Central and Uva provinces, as well as in the Galle, Matara and Kurunegala districts, during the early morning hours.