The met department says that rain accompanied by thunder could occur in the island's interior during the day time.
Meteorologist in charge Meril Mendis said that accidents of lightning could take place with the thunder showers that would occur in the afternoon.
The meteorologist in charge said that people should be on the alert with regard to this.
The National Disaster Management Centre said that six sluice gates of the Raajaangana reservoir were opened this forenoon due to the prevalent heavy rains.
National Disaster Management Centre Media Division Deputy Director Sarathlaal Kumaara said that 19 sluice gates of the Thabbowa reservoir too continued to remain open.