Candidate Tsunami Watch Providers (CTWPs), Tsunami National Contacts (TNCs), Tsunami Warning Focal Points (TWFPs) and National Tsunami Warning Centres (NTWCs) are basic structural elements of the TWS in the NEAM region. The functions of such components of the NEAMTWS have been adopted by the ICG at the second session of the NEAMTWS held in Nice, 22-24 May 2006.
• A decision making process in accordance with the Communication Plan to
To date, five countries have offered to host CTWPs: France, Greece, Italy, Portugal and Turkey; Germany has offered to provide backup for data collection and processing.
Established TNCs and TWFPs and prospective CTWPs in the NEAM region (map based on the General Bathymetric Chart of the Oceans - GEBCO)
Additionally to the TWFP functions,
National Tsunami Warning Centres (NTWCs)
• Collect, record, and process earthquake data for the rapid initial warning (locate the earthquake, the depth, the magnitude, the origin time)
• Compute the arrival time of the tsunami in the national forecasting points
• Collect, record, and process sea level data for confirming or cancelling the warning Warning Centres strive to be:
• Rapid, by providing warnings as soon as possible after a potential tsunami generation
• Accurate, by issuing warnings for all destructive tsunamis while minimizing false warnings
• Reliable, by making sure they operate continuously, and that their messages are sent and received promptly and understood by the users of the system.