The National Building Research Organisation [NBRO] has issued landslide early warnings to the Districts of Colombo, Gampaha, Kalutara, Kegalle, Nuwara Eliya and Ratnapura valid from 09:00 hrs on 23.05.2026 to 09:00 hrs on 24.05.2026

Accordingly,
LEVEL III [RED] landslide early warnings have been issued to the Divisional Secretaries Divisions and surrounding areas of Deraniyagala, Ruwanwella and Dehiowita in the Kegalle district and Ratnapura, Ayagama, Kuruwita and Eheliyagoda in the Ratnapura district.

LEVEL II [AMBER] landslide early warnings have been issued to the Divisional Secretaries Divisions and surrounding areas of Seethawaka and Padukka in the Colombo district, Attanagalla in the Gampaha district, Palindanuwara, Ingiriya, Bulathsinhala and Horana in the Kalutara district, Yatiyanthota in the Kegalle district and Pelmadulla, Kiriella, Kalawana, Nivithigala and Elapatha in the Ratnapura district.

LEVEL I [YELLOW] landslide early warnings have been issued to the Divisional Secretaries Divisions and surrounding areas of Divulapitiya and Mirigama in the Gampaha district, Mathugama and Agalawatta in the Kalutara district, Bulathkohupitiya in the Kegalle district, and Ambagamuwa in the Nuwara Eliya district.

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WEATHER FORECAST FOR 23 MAY 2026
Issued at 05.30 a.m. on 23 May 2026 by the Department of Meteorology

The South-West monsoon is gradually getting established over the island.

Showers or thundershowers will occur at times in the Western, Sabaragamuwa and North-western provinces and inAnuradhapura,  Galle, Matara, Kandy and Nuwara-Eliya districts.  Heavy showers about 100 mm are likely at some places in the Western and Sabaragamuwa provinces and in Galle and Matara districts.  Showers or thundershowers may occur at a few places in the Uva province and in Ampara and Batticaloa districts after 1.00 pm.

Fairly strong winds about (30-40) kmph can be expected at times over the Western slopes of the central hills, the Northern, North-central, North-western and Southern provinces and in Trincomalee district.

The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers

The National Building Research Institute [NBRI] has issued Landslide Early Warnings to the Districts of Colombo, Gampaha, Kalutara, Kegalle, Nuwara Eliya and Ratnapura valid upto 0900 AM on 23rd May 2026.

Accordingly,
LEVEL I [RED] landslide early warnings have been issued to the Divisional Secretaries Divisions and surrounding areas of  Deraniyagala, Ruwanwella and Dehiowita in the Kegalle district and Ratnapura, Ayagama, Kuruwita and Eheliyagoda in the Ratnapura district.

LEVEL II [AMBER] landslide early warnings have been issued to the Divisional Secretaries Divisions and surrounding areas of Seethawaka and Padukka in the Colombo district, Attanagalla in the Gampaha district,  Horana, Bulathsinhala, Ingiriya and  Palindanuwara in the  Kalutara district, Yatiyanthota in the Kegalle district and Pelmadulla,  Kiriella,  Elapatha,  Kalawana and Nivithigala in the Rathnapura district.

LEVEL I [YELLOW] landslide early warnings have been issued to the Divisional Secretaries Divisions and surrounding areas of Mirigama and Divulapitiya in the Gampaha district, Agalawatta and Mathugama in the Kalutara district, Bulathkohupitiya in the Kegalle district and Ambagamuwa in the Nuwara Eliya district.