HVO Mauna Loa YELLOW/ADVISORY - Mauna Loa is not erupting. Deformation and seismicity remain above long-term background.
Oct 12, 2017 20:11 - Activity Summary: Mauna Loa Volcano is not erupting. Rates of deformation and seismicity have not changed significantly in the past week and persist above long-term background levels. Observations: Small-magnitude earthquakes occurred primarily beneath the summit caldera and upper Southwest Rift Zone. These were mostly at shallow depths of less than 5 km (3 mi) with some additional deeper events at depths between 5-13 km (3-8 miles). Global Positioning System (GPS) and satellite radar (InSAR) measurements continue to show deformation consistent with inflation of ...