The massive 15 January 2022 explosion of the Hunga Tonga–Hunga Ha’apai (HTHH) volcano in Tonga – which generated a tsunami causing widespread damage locally, regionally and throughout the Pacific – was an unprecedented event not only for the Pacific Tsunami Warning Center (PTWC) but also for all Tsunami Warning Centers, whose warning procedures and products were designed for earthquake-generated tsunamis, accounting for almost 90% of past tsunami events worldwide.
The impact of the explosion and subsequent tsunami led the…
