The main change is to the Tsunami Advisory. Previously, a Tsunami Advisory indicated that a Tsunami Warning or Watch had been issued for another section of the ocean coast. Effective Feb. 12, 2008, WCATWC Tsunami Advisories are considered a low-level tsunami threat indicating that a moderate tsunami impact is possible.
No significant inundation is expected for areas under advisory, but strong currents dangerous to those in or very near the ocean are possible.
Further information on WCATWC products is provided at http://wcatwc.arh.noaa.gov/Products/msgdefs.htm. The NWS Service Change Notice explaining the change can be viewed at http://www.nws.noaa.gov/om/notification/scn07-51ccatsunami.txt.
The Emergency Alert System (EAS) is activated for Tsunami Warnings, not Tsunami Watches or Tsunami Advisories NOAA Weather Radio All Hazards broadcasts Tsunami Warnings,
Tsunami Watches, and Tsunami Advisories.