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Summit Deflation Leads to Slight Drop in Lava Lake Level

The U.S. Geological Survey reports summit deflation began the morning of Wednesday, April 18, 2018, and the lake level has dropped slightly.

In this photo, an HVO geologist checks on a time-lapse camera on the rim of Halema‘uma‘u Crater. A large spatter site is active along the east margin of the lake. Courtesy U.S. Geological Survey.

On Wednesday morning, April 18, the lake was about 14 meters (46 feet) below the overlook of the crater rim, having dropped roughly 4 meters (13 feet) since yesterday morning.