Kilauea volcano update: Changes continue at erupting West Vent: Observations & measurements

Tue, 13 Apr 2021, 09:23
09:23 AM | BY: PO
The active lava lake and western vent, taken from the west rim of Halema‘uma‘u crater at Kīlauea summit (Image: USGS-HVO)
The active lava lake and western vent, taken from the west rim of Halema‘uma‘u crater at Kīlauea summit (Image: USGS-HVO)
Kīlauea, erupting since December 20, 2020, continues a gentle effusion of lava into its summit crater, Halemaʻumaʻu, adding to a slowly filling lava lake.

Latest on Kīlauea, Eruption Day 114:

-West Vent entry fully shifted north since March 22, following change on March 5-7
-Lava pulses trigger breakouts of entry lava tube and ooze-up flows from nearby crusted lake perimeter, both at the same time
-SO2 last week measured by USGS between ~850-1000 tonnes/day, within average range of the past 2 months
-Lava lake slowly fills around 1 m / 3 ft each week, now 226 m / 741 ft deep (USGS); still well below the inner-most crater rim and not visible from public areas on the ground

Discussion: Small changes around the west vent entry continue as the lava pathway evolves under the filling lake. Otherwise, no indications of any major change in the eruption are apparent in monitoring signals, and the low-effusion phase may continue as it has for the past 2 months.

Source: Compilation and summary of USGS Hawaiian Volcano Observatory activity updates & online data, February, March & April 2021

Previous news

Fri, 12 Mar 2021, 07:54
The pond has developed a subtle levee on its south margin (below the center of the photo). (image: HVO)
According to Hawaiian Volcano Observatory (HVO) a small lava pond developed near the western fissure during 5-7 March. ... Read all
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