USGS Volcano Hazards Program Volcano Update

HVO update page and observatory web site

No unusual seismicity was detected. Two earthquakes (>5 km deep) were detected in the area.
Background: Lo`ihi was last active in 1952, when activity probably generated a small local tsunami, and 1996. There are no working instruments on Lo`ihi Volcano whose peak is about 1,000 m below sea level. All current information about the volcano is derived from land-based seismometers on Hawai`i Island.

Update in Common Alerting Protocol (CAP) format