Pacific Tsunami Warning Center
http://ptwc.weather.gov/
Address
US Dept of Commerce / NOAA / NWS
Pacific Tsunami Warning Center
91-270 Fort Weaver Rd
Ewa Beach
HI 96706-2928
Summary
NOAA’s two Tsunami Warning Centers (PTWC and WC/ATWC) have separate areas of responsibility, which are the geographical areas within which each Center has the responsibility for the dissemination of messages and the provision of interpretive information to emergency managers and other officials, news media, and the public.