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Mauga Mū a Amerika Samoa—Volcanoes of American Samoa

Fact Sheet 2023-3022
Prepared in collaboration with the National Oceanic and Atmospheric Administration and the National Weather Service
By: , , , , and 
https://doi.org/10.3133/fs20233022

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Upu Amata (Introduction)

O le Atu-Samoa o le tasi lenei o faʻasologa motu mauga mu i le Vasa Pasefika i Saute. O motu e pito i sasaʻe o nei faʻasologa mauga mu o le Atu-Samoa, o motu ia o Amerika Samoa. E tofu lava mauga mu taʻitasi o Amerika Samoa ma ona talaaga aemaise tulaga e tutupu e ono pa ai i le lumanai. O loʻo galulue faʻatasi le Ofisa o le U.S. Geological Survey (USGS) ma le National Oceanic and Atmospheric Administration Ofisa Vaʻai Tau i Pago Pago e faailoa i tagatanuʻu ma tagata asiasi o tulaga lamatia e ono tutupu. O loʻo faʻapupula atili atu iʻi auala na gaosia ai motu nei faʻapea auala o loʻo fesoasoani ai le vaega e mataʻituina mauga mū e puipui tagata ma mea-totino mai tulaga lamatia o mauga mū.

American Samoa comprises the easternmost islands of a volcanic island chain in the South Pacific Ocean. Each island of American Samoa has a unique eruptive history and a possibility for future eruptions. The U.S. Geological Survey (USGS) collaborates with the Pago Pago office of the National Oceanic and Atmospheric Administration National Weather Service to inform residents and travelers of potential hazards. Insights are provided herein on how the islands formed and how volcano monitoring helps protect people and property from volcanic hazards.

Suggested Citation

Deligne, N.I., Downs, D.T., Lutu-McMoore, E., Sobieszczyk, S., and Stovall, W., 2024, Volcanoes of American Samoa: U.S. Geological Survey Fact Sheet 2023–3022, 6 p., https://doi.org/10.3133/fs20233022.

ISSN: 2327-6932 (online)

ISSN: 2327-6916 (print)

Study Area

Table of Contents

  • Introduction
  • American Samoa, a volcanic island chain
  • Types of volcanic activity in American Samoa
  • Eruption at Ofu-Olosega volcano (1866)
  • Volcanic unrest at Taʻū volcano (2022)
  • Volcano alert levels and aviation color codes
  • Stay informed, be prepared
  • More information
Publication type Report
Publication Subtype USGS Numbered Series
Title Volcanoes of American Samoa
Series title Fact Sheet
Series number 2023-3022
DOI 10.3133/fs20233022
Year Published 2024
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Volcano Science Center
Description 6 p.
Other Geospatial American Samoa
Online Only (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details