Volcano Watch: Kilauea’s summit glow that comes and goes

  • USGS graphic Plots showing the correlation between Kilauea summit sulfur dioxide emissions (SO2) in tonnes per day (top panel), ground tilt in microradians (middle panel), and seismic tremor (RSAM) (lower panel) for the period of Nov. 1, 2021, to Jan. 22. Eruptive pauses and highly diminished activity are highlighted in blue.

Kilauea’s summit glow comes and goes frequently these days. This is due to a pattern of pauses in lava lake activity within Halema‘uma‘u crater over the last two and a half months. Cycles last several days to a week and consist of a couple days of visible lava lake activity, followed by one to three days without lava.