Observations of seismic activity,
sea floor bathymetry, topography, and sea height are used in
combination with tsunami models to create inundation and evacuation
maps and to issue tsunami watches and warnings.
Latest event messages for Hawaii, all U.S. interests in the Pacific outside the West Coast/Alaska Tsunami Warning Center area of responsibility, most countries in the Pacific and around its rim. Includes Puerto Rico and the Virgin Islands. (from PTWC)