HVO reported that a vent on the inner NW wall of Kilauea?s Halema`uma`u Crater continued to supply the lava lake during 17-23 February.
The depth of the western part of the lake fluctuated between 215 and 218 m and the lake surface actively overturned at ?plate? boundaries.
The sulfur dioxide emission rate was elevated at 1,000 tons/day on 19 February.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)