HVO Mauna Loa YELLOW/ADVISORY - Mauna Loa is not erupting. Deformation and seismicity rates above long-term background.
Mar 22, 2018 19:52 - Activity Summary: Mauna Loa Volcano is not erupting. Rates of deformation and seismicity have not changed significantly in the past week, persisting at above-long-term background levels. Observations: During the past week, only a few small-magnitude earthquakes occurred beneath the volcano, primarily at depths shallower than 13 km (8 miles). The largest of these was a magnitude 2.0 earthquake in the Mauna Loa summit caldera on March 16. Global Positioning System (GPS) and Interferometric Synthetic Aperture Radar (InSAR) measurements continue to show slow ...