The 27th session of the Intergovernmental Coordination Group Pacific Tsunami Warning and Mitigation System (ICG/PTWS) which was held in Tahiti (March 2017), the following terms of reference were defined for the Regional Working Group on Tsunami Warning and Mitigation System in the South East Pacific Region: 1.1. To identify current gaps on the warning and mitigation capabilities of countries in the South East Pacific Region based upon the lessons learned from the latest tsunami events. 1.2. To increase understanding of tsunami risk and to identify the requirements from countries in the Southeast Pacific Region for the tsunami warning and mitigation, following the Sendai framework priorities as a reference. 1.3. To promote regional activities and join projects considering in-region capacity building and enhancing disaster preparedness for response as main efforts, according the priorities number 1 and 4 of the Sendai framework. 1.4. To facilitate cooperation in the establishment and upgrading of seismic and sea level stations and networks and communication systems in the region, and their interoperability in accordance with ICG/PTWS requirements, through the active participation of appropriate national delegates from Member States, in the Working Group 2: Tsunami Detection, Warning and Dissemination. 1.5. To improve the educational programs with a regional criteria based on the regional social, cultural and economic reality, through the active participation of appropriate national delegates from Member States, in the Working Group 3 Disaster Management and Preparedness. 1.6. To facilitate capacity building and the sharing of sea level, seismic and GNSS information, among others, in the region, including the free and open exchange of data. 1.7. To develop synergies with universities and academic centers to promote and to facilitate the regional tsunami research in order to cope with regional needs. 1.8. To improve the communication channels between the countries, according to the program established in 2013 of periodical tests using redundant systems. 1.9. To analyze the convenience of piloting Tsunami Ready program in the region. The Group will be composed of representatives nominated by the Member States of Colombia, Ecuador, Peru and Chile, with a Chair and a Vice-Chair from each country rotating every two years. The representatives for the period 2017-2018 are Ms. Ceci Rodriguez (Peru) as Chair and Mary Luz Rengifo (Colombia) as Vice-Chair.