Changes at the summit of Kīlauea between April 14 and August 20, 2018, were captured by a USGS–Hawaiian Volcano Observatory camera. This time-lapse series includes roughly one image per day. The lava lake
within Halema‘uma‘u is visible in April, with overflows onto the caldera
floor on April 23. The lava
lake drains in early May, followed by explosive activity over the next few weeks. Large-scale subsidence of Halema‘uma‘u and the adjacent caldera floor begins at the end of May and ends abruptly on August 2. Summit seismicity
and ground deformation
are negligible through August 20, 2018. The crater within the caldera is now seven times larger than it was before the onset of subsidence.