Tilt record from December 1, 2025, to May 12, 2026, for tiltmeter UWD near the summit of Kīlauea

Tilt record from December 1, 2025, to May 12, 2026, for tiltmeter UWD near the summit of Kīlauea, during which lava fountaining episode 38–46 occurred. Deflationary tilt is shown as a tilt “decrease” and inflationary tilt as an “increase”. Tilt variations during pauses, especially after episode 41, have led to adjustments of the forecast windows. The size of the deflationary tilt signal during an episode is proportional to the length of the pause. Recent episodes (44–46) have been smaller volume, requiring less time to refill what erupted before the next episode.