By SARAH CONWAY HVO geophysicist
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This story begins after Kilauea’s May 4, 2018, M6.9 earthquake and lower East Rift Zone eruption. The M6.9 earthquake resulted in seaward motion at the surface of Kilauea’s south flank of up to approximately 0.5 m (1.5 ft) as measured by Global Positioning System monitoring stations operated by the USGS Hawaiian Volcano Observatory.