HVO team services volcano network in American Samoa
USGS Hawaiian Volcano Observatory staff spent two weeks in American Samoa in August and September. They repaired and maintained volcano monitoring equipment and worked with local emergency management partners on K-12 outreach. The article notes past unrest at Ta‘u volcano in the Manu‘a Islands in 2022.
HVO personnel made a two-week visit in August and September. They fixed and maintained instruments and joined local emergency managers for school outreach. American Samoa falls within HVO’s monitoring responsibility because both archipelagos are shaped by hotspot volcanism.
In 2022, Ta‘u in the Manu‘a group experienced six weeks of earthquakes before activity dropped back to normal that September. Every inhabited island in the territory is volcanic; Tutuila and Aunu‘u belong to Tutuila volcano, whose last eruption was about 1,500 years ago. Ofu-Olosega erupted offshore in 1866, sending ash roughly 600 meters high.
Residents of American Samoa’s inhabited volcanic islands could benefit from maintained monitoring and closer ties between scientists and emergency managers, potentially improving early warning and preparedness. Local schools and agencies may gain hazard awareness through outreach. Scientists may also strengthen understanding of regional volcanic activity. Since unrest and eruptions are rare but disruptive, reliable instruments could help communities respond more calmly, though monitoring cannot prevent future volcanic events.