Tsunami warning? Nothing

All theoretical information aside, when the tsunami wave struck Niuatoputapu, it resulted in seven or more deaths, and significant damage to the village. On the island of Lifuka, in Ha'apai, there was far more damage than "minor flooding." The initial tsunami wave itself was about one meter in height, followed by several waves of lesser height. The subsequent turbulence and the rapidly shifting currents in the Pangai harbor resulted in the sinking of 2 fishing boats, and the grounding of several others. - Tama Pangai