The Disaster Management Centre said a tsunami, landslide and flood rehearsal will be held from 10 am to 3 pm today in selected villages covering the 25 districts.
Deputy Director of the DMC Pradeep Kodipillai said the rehearsal programme will provide guidance to people to seek places of safety and check tsunami early warning systems and also to familiarise residents to react properly in the face of disasters during the drills.
The meteorology department states that Isolated showers or thundershowers will occur in the Western, Central and Sabaragamuwa provinces and in the Galle district during the afternoon or evening.
Light showers can be expected in the Eastern and Uva provinces and in the Hambantota district.
There may be temporary localized strong winds during thundershowers.
Duty meteorologist Buddika Bandurathna requested the General public to take adequate precautions to minimize the damages caused by lightning.