Halemaʻumaʻu now has the most fountaining episodes ever recorded for an episodic fountaining eruption

Episode 48 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea ended abruptly at 1:37 p.m. HST on June 1, 2026, after 9 hours of continuous lava fountaining from the north vent. The eruption is currently paused.

The Halemaʻumaʻu eruption now has the most fountaining episodes ever recorded for an episodic fountaining eruption, edging out the Pu‘u‘ō‘ō eruption which had 47 fountain episodes. Other eruptions have had additional episodes related to changes in vent activity and location, this only applies to episodic fountains.

Most tephra fell within the closed area of Hawaiʻi Volcanoes National Park, but sparse reticulite up to 1 inch (2 centimeters) in size fell at both the Uēkahuna overlook and on Highway 11 west of Nāmakanipaio campground. Fine ash and Peleʻs hair was reported from Hawaiʻi Volcanoes National Park in communities to the northeast, including Mauna Loa Estates, Ohia Estates, Volcano village, and Royal Hawaiian Estates.

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Lava fountaining episode 48 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea started at 4:40 a.m. on Monday, June 1.

More than 90 overflow events from the south vent started at 5:41 p.m. on May 30. 

Fountaining is focused on the north vent this morning and has reached more than 650 feet. Seismic and deformation signals indicate that the fountain has reached its peak height and effusion rate for episode 48 already, although fountaining will likely continue for many more hours.

The plume from this eruption is currently reaching 24,000 feet above sea level, according to a report from the Hawaiian Volcano Observatory.

The National Weather Service indicates winds are from the south at 10,000 to 20,000 feet above sea level, and could potentially disperse tephra to the north.

As a result, the National Weather Service has issued an ashfall advisory for communities near the Hawai‘i Volcanoes National Park, including Mountain View and Pāhoa. Ashfall and light tephra are expected to fall in the communities North of the Park.

Residents are advised to take the necessary precautions, such as closing windows and doors and wearing masks, gloves, and eye protection. Cover or disconnect water catchment systems to protect water supply.

Kīlauea has been erupting periodically since Dec. 23, 2024. The lava fountaining episodes have continued for a day or less.