The Pacific Tsunami Warning Center (PTWC) is one of two tsunami warning centers that are operated by NOAA in the United States. Headquartered in ‘Ewa Beach, Hawaii, the PTWC is part of an internation… Pacific Tsunami Warning Center – Wiki Article – wikiplays.org Original @ http All Information Derived from Wikipedia using Creative Commons License: en.wikipedia.org Author: Image URL: en.wikipedia.org ( This work is in the Public Domain. )