Regional Expanding Tsunami Watch/Warning Bulletin (Rww)
Regional Expanding Tsunami Watch/Warning Bulletin (Rww) : A PTWC PTWS message issued initially using only seismic information to alert countries of the possibility of a tsunami and advise that a tsunami investigation is underway. In the Pacific, Tsunami Warning status will encompass regions having less than three hours until the estimated time of tsunami arrival. Those areas having three to six hours will be placed in a Watch status. Additional bulletins will be issued hourly or sooner until either a Pacific-wide tsunami is confirmed or no further tsunami threat exists
No records Found