Skip to main content
U.S. flag

An official website of the United States government

Ofu-Olosega

Find U.S. Volcano
Current Alerts
Ofu-Olosega
green NORMAL, 2023-03-02 21:30:27 UTC
Update
Search Recent Notifications

Ofu and Olosega are two islands formed from two shield volcanoes in the United States Territory of American Samoa. Volcanic activity in American Samoa is within the area of responsibility of the U.S. Geological Survey’s Hawaiian Volcano Observatory, based in Hilo on the Island of Hawai‘i.

Volcanoes in American Samoa

Facts Block

Location: American Samoa
Latitude: 14.18° S
Longitude: 169.62° W
Elevation: 639 (m) 2,096 (f)
Volcano type: Shield
Composition: Basalt
Most recent eruption: unknown
Nearby towns: Olosega, Ofu
Threat Potential: Low

Hawaiian Volcano Observatory (HVO)

USGS Hawaiian Volcano Observatory staff, September 2018.

The USGS Hawaiian Volcano Observatory monitors volcanoes in American Samoa

Learn about HVO

HVO Quick Links

Color photograph of islands from space
Sources/Usage: Public Domain.
NASA Astronaut image of Ofu-Olosega islands (Manu'a Islands, American Samoa) in the South Pacific Ocean. NASA Space Shuttle image ISS002-E-6878 (https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS002&roll=E&fr…).

News

link

Volcano Watch — Volcanoes of American Samoa

link

Photo and Video Chronology – Hawaiian Volcano Observatory – August 26, 2022

link

Volcano Watch — HVO Responds to American Samoa Earthquake Reports

View All

Contacts

Hawaiian Volcano Observatory

Phone
808-967-7328

Facts Block

Location: American Samoa
Latitude: 14.18° S
Longitude: 169.62° W
Elevation: 639 (m) 2,096 (f)
Volcano type: Shield
Composition: Basalt
Most recent eruption: unknown
Nearby towns: Olosega, Ofu
Threat Potential: Low

Volcano Hazards Program Links