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December 12, 2022

A monitoring overflight of Mauna Loa's Northeast Rift Zone eruption. This morning, there was residual incandescence and no lava movement in the fissure 3 vent; field crew heard small explosions accompanied by sprays of spatter from the west end of the vent.

Mauna Loa Northeast Rift Zone Fissure 3

Color photograph of volcanic vent
As of 7:00 a.m. on December 12, Hawaiian Volcano Observatory geologists observed only residual incandescence and no lava movement in the fissure 3 vent on the Northeast Rift Zone of Mauna Loa. The channels below the vent appear drained of lava and no longer feed the main flow front. USGS image by F. Trusdell.