Hawaiian Volcano Update: Kīlauea Eruption Recap Part 2, September 28, 2023

Kīlauea's latest summit eruption lasted from September 10 to 16, 2023, during which it covered nearly 500 acres within the caldera, including a large part of the down-dropped block formed in the 2018 collapse, the eastern rim of the inner crater which now lies buried, and the majority of the inner crater floor. Gas emissions remain at background levels for the volcano around 150 tonnes of SO2 per day, but can still affect sensitive individuals in downwind areas.

Earthquake rates also remain at background levels on Kīlauea, with between 20 to 30 events per day over the past week. Kīlauea volcano has resumed inflating at its summit, starting to recover the underground pressure that was relieved through this month's eruption. There are no unusual changes elsewhere on the volcano, meaning there is no increased threat to people beyond the norm. Maunaloa is also quieter, with its deep earthquakes absent over the past week.

This week we finish our review of time-lapse and imagery of the recent eruption, to compliment the usual look-in at ongoing monitoring signals on Kīlauea and Maunaloa. We present custom compilations of imagery courtesy of the USGS Hawaiian Volcano Observatory to complement their visuals and reports, and annotate our presentation on-screen and discuss live viewer questions as we go.