
Summit instruments detected a deflation starting around the midnight of 18 June with ground subsidence by approx. 2.5 microradians. The lava lake level has dropped by about 3 meters (10 ft) since the ground deformation started. This is most likely reflects reverts of magma batch movements under the surface leading to the lava lake sinking.
The lava flow from the western vent continues to supply to the Halemaʻumaʻu lava lake along the southern and northern rim of the crater floor.
UPDATE 20 June:
The deflation continues and the ground has sunk by 1 more microradians with the lava lake dropping by 2 meters (6 ft) over the past 24 hours.
Source: Hawaiian Volcano Observatory volcano activity update 20 June 2022
