South-West monsoon May 2018 - Situation Report Summary (23rd May 2018 - 1000hrs)

from Disaster Management Centre of Sri Lanka
Published on 23 May 2018 View Original


  • A heavy rainfall was received across several parts of Sri Lanka between 20 and 21 May 2018, caused heavy rains and flash floods mainly in twelve districts, including Southern,
    Western, North-Western and Sabaragamuwa Provinces.

  • Early-warning reached to the affected people and evacuations were done covering the people who are at risk . Search & rescue teams were pre-positioned and boats were kept as ready to launch in the affected districts. 557 military and police officials were mobilized immediately for search and rescue operations while 5,826 military and police personnel have been organized as stand-by teams for immediate deployment.

  • 84,943 people (18,542 families) have been affected (the Disaster Situation Report , DMC & National Disaster Relief Services Centre (NDRSC) at 1000 hours on 23rd of May 2018).
    NDRSC has provided 14.7 million cash allocations to the 12 District Secretaries to address the immediate needs of the affected populations.

  • As per the immediate rapid impact analysis estimates, 23,000 people need emergency flood relief and early recovery assistance.

  • River water levels at many stations are gradually decreasing, as the rainfall recorded in the catchments during the last 24 hours ending 0830 hours is lower compared to the rainfall received in 20th and 21st May 2018.


As per the Department of Meteorology, few places in Puttlam district received the highest rainfall received within the 24 hours ending at 0830 hours on 21 May 2018. Rainfall stations in Anamaduwa, Adigama and Kamalsram in Puttalam recorded rains above 300mm while, Anamaduwa received the highest rainfall of 353.8 mm of rain in 24 hours to early 21 May 2018. Moreover, many places received more than 100 mm of rain in 5 hours during 20 May, including Ratnapura which reported 222.5 mm and Eheliyagoda (Sabaragamuwa Province) with 201.5 mm.

Department of Meteorology highlighted last 18—24 hours rainfall observed in main stations ended on morning hours of 23nd May 2018 showing reduction of rainfall in many areas; in Trincomalee 52.6mm, in Batticaloa 43.5mm, in Badulla 29.5mm, Vavuniya 28.5mm. The highest rainfall recorded was around 72.7mm in Oddusudan in Mullative District. However, based on received rainfall since 22nd May 2018, rainfall has been reduced in catchment areas and affected areas and flood waters are receding, allowing response and relief services to be more effective.

Minister of Disaster Management, Hon Duminda Dissanayake has visited Kalutara area and State Minister of Disaster Management, Hon Palitha Range Bandara has visited Puttalam area together with Ministry and District officials to provide effective relief to affected people. Hon Minister, has left his office to Ratnapura today to observe the affected areas and provide immediate needs.

Dam leak was identified in Pulachchikulam tank in Puttalam District and settled with sand bags. Vijaya Katupotha tank and Waama-Eliya tank has been damaged due to massive rainfall during 21st May. A stability issue has been identified in the Kaduwela main bridge and Kaduwela-Biyagama road is temporarily closed.