Volcano Watch: Ups and downs at Kilauea summit: Quiescence, eruptions, and constant change

USGS graphic Kilauea summit tiltmeter data (top) and summit GPS daily vertical position data (bottom) shown for the time period January 1, 2020, to May 15, 2023. Summit intrusion and eruption onsets are marked with thin vertical lines and labels. Increased positions and positive slopes in these plots are interpreted as inflation at Kilauea’s summit.

May 3 marked the fifth anniversary of the start of Kilauea’s historic 2018 eruption that resulted in extensive lava flows from the East Rift Zone and major collapses of the summit caldera floor. Since that 2018 activity, Kilauea has experienced nearly constant change with distinct episodes of calm, unrest, eruptions, and everything in between.