How many warnings have been issued by the Pacific Tsunami Warning Center since it was established?
The Pacific Tsunami Warning Center has issued a total of 20 warnings since it was first established in 1948. Of these 20, 5 resulted in significant Pacific-wide tsunamis. Even though all significant Pacific-wide tsunami events have been detected since 1948, 61 people perished when they failed to heed the warning for the 1960 tsunami that struck Hilo. Since 1964, there have been no significant Pacific-wide tsunami events.