Operational Users Guide for the Tsunami Warning System
a summary of the administrative
and operational services and procedures, including monitoring and detection data networks used by the warning
centres, the criteria
for the reporting and issuing of tsunami information messages, samples messages, the recipients of the information, and the methods
by which the messages
are sent. Background information to assist users in understanding the products that are issued
may also be included. In the Pacific,
it was formerly called the Communications Plan for the TWSP.
