By Hawaiian Volcano Observatory Special to West Hawaii Today
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This story begins after Kilauea’s May 4, 2018, magnitude-6.9 earthquake and lower East Rift Zone eruption. The magnitude-6.9 earthquake resulted in seaward motion at the surface of Kilauea’s south flank of up to approximately 1.5 feet as measured by GPS monitoring stations operated by the U.S. Gelogical Survey’s Hawaiian Volcano Observatory.