Lava activity remains confined to Halema‘uma‘u crater, the Hawaiian Volcano Observatory reported Tuesday morning.
Vents were spattering from the top of a small cone plastered on the northwest wall of Halema‘uma‘u crater and lava was flowing down a narrow channel to the lake and feeding a small dome fountain in front of the west vents, the observatory said.
The lake, measured at 627 feet Monday afternoon, covers 82 acres within Halema‘uma‘u crater.
Meanwhile, sulfur dioxide (SO2) emissions remain elevated with output ranging from 3,000 tons per day to 6,500 tons per day.
The levels have stayed in that range since Dec. 27 and similar to values common for emissions from the pre-2018 lava lake. At the start of the eruption on Dec. 20, an estimated 35,000 tons per day to 40,000 tons per day of SO2 was being released from Halema‘uma‘u crater.
With trade winds forecast to continue through at least Thursday, portions of Hawaii Island southwest of Kilauea’s summit, primarily the North Kona, South Kona and Ka‘u districts, may experience vog, according to the University of Hawaii at Manoa’s Vog Measurement and Prediction Project.
However, air quality is likely to remain “good or acceptable” based on current emission rates from the volcano, the project said.
Some reprieve from the vog could come Friday and Saturday as the trade winds transition to light and variable winds. Gentle trade winds are forecast to return Sunday and remain into next week, according to the National Weather Service.
For more information on the ongoing eruption, visit https://www.usgs.gov/observatories/hawaiian-volcano-observatory. For more information on vog, including ways to monitor air quality, visit https://vog.ivhhn.org.