The National Building Research Organization noted that the landslide warning issued to Ratnapura, Nuwara Eliya, Kegalle and Kalutara districts are further effective.
Releasing a communiqué, the organization requests the people who live on mountain slopes and man-made slopes in these areas to remain vigilant.
Meanwhile, the highest rainfall during the past 24 hours was recorded from Ilubuluwa Estate in Ratnapura District.
According to the Met department, the rainfall amounts to 42.1 ml.
However, the department also noted that thunder showers are expected this evening and tonight in Western, North-western, Southern, Central and Sabaragamuwa provinces.