The Department of Meteorology has issued a statement saying that the atmospheric disturbance currently prevailing in the lower atmosphere near Sri Lanka has the potential to develop into a low-pressure area within the next 24 hours.Due to the influence of this system, an increase in rainfall can be expected across the island and over the deep and shallow sea areas surrounding Sri Lanka from today (21) and during the next few days.The Department of Meteorology requested the public, including fishing and naval communities, to remain attentive to future forecasts and advisories issued by the Department regarding this system.Showers or thundershowers will occur at times in most parts of the island, while the skies will remain cloudy over many areas.Heavy rainfall exceeding 100 mm may occur at some locations in the Western, Sabaragamuwa, Central, North Western, Northern and Southern provinces, as well as in the Anuradhapura District.The Department requested the public to take necessary precautions to minimise accidents caused by temporary strong winds and lightning that may accompany thundershowers.Foggy conditions may prevail at some locations in the Central and Uva provinces during the early morning hours.