Episode 37 of the ongoing Halemaʻumaʻu eruption ended abruptly at 11:39 p.m. last night after 9.2 hours of continuous fountaining.

During this episode, dual lava fountains from the north vent reached maximum heights of 500-600 feet. Continuous fountaining produced an estimated 8.2 million cubic yards of lava. The combined average eruption rate was over 200 cubic yards per second. Lava flows from the fountains covered about 75% of the floor of Halemaʻumaʻu crater.

Lava flows from this episode on the floor of Halemaʻumaʻu within the southern part of Kaluapele (Kīlauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days.

Most episodes of Halemaʻumaʻu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days.

No changes have been detected in the East Rift Zone or Southwest Rift Zone.