Alert Level: NORMAL, Color Code: GREEN 2026-02-06 03:00:57 UTC
HAWAIIAN VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Thursday, February 5, 2026, 5:00 PM HST (Friday, February 6, 2026, 03:00 UTC)
OFU-OLOSEGA (VNUM #244010)
14°10'30" S 169°37'5" W, Summit Elevation 2096 ft (639 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
No significant activity was detected at Ofu-Olosega volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano. Several residents across the American Samoa islands reported feeling shaking on the evening of January 20th, which was due to a distant earthquake on the Tonga Trench (USGS National Earthquake Information Center).
Background: The islands of Ofu and Olosega in the Manuʻa Islands of eastern American Samoa, with a combined length of 6 kilometers (3.7 miles), are separated by a narrow strait. The islands are formed by two eroded, coalescing basaltic shield volcanoes whose slopes dip to the east and west. The Nuʻutele tuff cone, forming a small crescent-shaped island immediately off the west end of Ofu, is of Holocene age (less than 11,650 years). A submarine eruption occurred in 1866, 3 kilometers (1.9 miles) southeast of Olosega, along the Samoan Ridge between Olosega and Taʻu Island. From: https://volcano.si.edu/volcano.cfm?vn=244010.
More Information: https://www.usgs.gov/volcanoes/ofu-olosega
This notice contains volcanoes not displayed here: Ta'u Island (NORMAL/GREEN), Tutuila Island (NORMAL/GREEN).
The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawaiʻi and American Samoa.
CONTACT INFORMATION:
askHVO@usgs.gov
Subscribe to these messages: https://volcanoes.usgs.gov/vns2/
Summary of volcanic hazards from eruptions: https://www.usgs.gov/observatories/hvo/hazards
Recent earthquakes in Hawaiʻi (map and list): https://www.usgs.gov/observatories/hvo
Explanation of Volcano Alert Levels and Aviation Color Codes: https://www.usgs.gov/programs/VHP/volcanic-alert-levels-characterize-conditions-us-volcanoes
