July 28, 2026 — Lava fountaining at the north vent during episode 52 at Kīlauea summit

Lava fountained from the north vent in Halemaʻumaʻu at the summit of Kīlauea for nearly 7.5 hours on the night of July 28-29, 2026. During the eruptive episode, the instantaneous effusion rate peaked at about 350 cubic yards (270 cubic meters) per second at approximately 9:15 p.m. HST, with an average effusion rate of 250 cubic yards (190 cubic meters) per second for the entire fountaining episode. An estimated 6.1 million cubic yards (4.7 million cubic meters) of lava erupted and covered about 40-50% of the Halemaʻumaʻu crater floor.  USGS photo by K. Mulliken.