Maunaloa volcano, Big Island, Hawai'i: news & activity updates

HVO reported continuing unrest at Mauna Loa during 19-25 October. The seismic network detected 10-46 daily small-magnitude (below M 3) earthquakes 3-5 km beneath Mokua'weoweo caldera and 6-8 km beneath the upper NW flank of Mauna Loa. Data from Global Positioning System (GPS) instruments at the summit and flanks showed continuing inflation, though data from tiltmeters at the summit did not show significant surface deformation over the past week. Read allHVO reported continuing unrest at Mauna Loa during 12-18 October. The seismic network detected 22-65 daily small-magnitude (below M 3) earthquakes 3-5 km beneath Mokua?weoweo caldera and 6-8 km beneath the upper NW flank of Mauna Loa. Data from Global Positioning System (GPS) instruments at the summit and flanks showed continuing inflation, though data from tiltmeters at the summit did not show significant surface deformation over the past week. Read allThe seismic unrest at the volcano continues to be elevated. Read allOn 5 October HVO noted recent increases in seismicity and deformation at Mauna Loa. The number of earthquakes increased from 5-10 per day in June to 10-20 per day during July-August. The number of daily earthquakes again intensified, to 40-50 per day, starting at about 0200 on 23 September, and peaks as high as 100 per day were recorded on 23 and 29 September. Read allThe elevated seismic unrest at the volcano continues. Read allOn 5 October HVO noted recent increases in seismicity and deformation at Mauna Loa. The number of earthquakes increased from 5-10 per day in June to 10-20 per day during July-August. The number of daily earthquakes again intensified, to 40-50 per day, starting at about 0200 on 23 September, and peaks as high as 100 per day were recorded on 23 and 29 September. Read allThe Hawaiian Volcano Observatory (HVO) reported that a small seismic swarm is occurring beneath the summit of the volcano. Read allDuring the past week, HVO seismometers recorded approximately 62 small-magnitude (below M3.0) earthquakes below the summit and upper-elevation flanks of Mauna Loa. The majority of these earthquakes occurred at shallow depths less than 15 kilometers (9 miles) below sea level. Read all