HVO Mauna Loa YELLOW/ADVISORY - Mauna Loa is not erupting. Deformation and seismicity rates above long-term background.
Feb 8, 2018 20:43 - Activity Summary: Mauna Loa Volcano is not erupting. Rates of deformation and seismicity remain above long-term background levels. Observations: Small-magnitude earthquakes continue to occur beneath the volcano, primarily beneath the summit caldera and upper Southwest Rift Zone at depths less than 5 km (3 miles). Additional deeper seismicity at depths less than 13 km (8 miles) was scattered beneath the flanks of the volcano. Global Positioning System (GPS) and Interferometric Synthetic Aperture Radar (InSAR) measurements continue to show slow deformation related ...