Established in 1949, the Pacific Tsunami Warning Center (PTWC) in Ewa Beach,|
Hawaii, provides warnings for teletsunamis to most countries in the Pacific
Basin as well as to Hawaii and all other US interests in the Pacific outside of
Alaska and the US West Coast. Those areas are served by the West Coast / Alaska
Tsunami Warning Center (WC/ATWC) in Palmer, Alaska. PTWC is also the warning
center for Hawaii's local and regional tsunamis. The PTWC provides information
on most recent tsunamis, safety information (via NWS TsunamiReady), and
background information on tsunamis and earthquakes.
NOAA's Pacific Tsunami Warning Center will notify authorities and others
through advisory messages. These messages are information bulletins, warnings
or watches. In any case the message will be posted at the PTWC Web site. The
type of messages, will depend on the situation as interpreted initially from
* Tsunami Information Bulletin- At this time, though a threat exists, there is
no evidence that a tsunami is making its way across the Pacific.
* Tsunami Watch- PTWC has determined the earthquake may very likely have
created a tsunami and is advising parties to be alert as PTWC awaits tide data
to support tsunami generation.
* Tsunami Warning- PTWC finds conditions serious enough to issue immediate
concern to parts of the Pacific. The message will include approximate arrival
times for various parts of the Pacific.
Information provided by NOAA