the threat of tsunamis caused by nearby events. As a result, PTWC began issuing tsunami warnings for local events near Hawaii.

In 1982, the Alaska Tsunami Warning Center's area of responsibility was enlarged to include California, Oregon and Washington, as well as British Columbia in Canada, but only for earthquakes in the vicinity of the West Coast. PTWC continued to provide coverage of teletsunamis. The Alaska center's responsibilities were expanded in 1996 to include all Pacific-wide sources,