Glow and spattering marks precursory activity for Episode 25 of Kīlauea eruption

Episode 25 precursory activity started within Halemaʻumaʻu at Kīlauea on the morning of June 10. Glow and scattered spattering at the north vent changed to more continuous spattering in the early morning hours, according to a status update from the Hawaiian Volcano Observatory.

At about 5:54 a.m., lava overflowed the north vent cone and is currently flowing onto the crater floor. Episode 25 is forecast to begin between tomorrow (Wednesday) and Thursday. However, there is a chance that activity could proceed to high fountaining today.

In recent episodes of the ongoing eruption within Halemaʻumaʻu, low-level precursory activity has lasted from a few hours to a few days. This activity can include spatter from north and/or south vents, small dome fountains, and lava overflowing from one or both vents. At the start of previous episodes, precursory activity has rapidly escalated into sustained high fountaining over minutes to tens of minutes, according to the HVO

The tiltmeter at Uēkahuna has recorded 13 microradians of inflation since the end of the last episode. Low level seismic tremor continues beneath Halemaʻumaʻu crater, the HVO reports.

Most episodes of Halemaʻumaʻu lava fountaining since Dec. 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. 

According to the HVO, no changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN/VONA will be issued when sustained lava fountaining begins, marking the start of episode 25, or earlier if the situation warrants a further update.

Kīlauea Volcano Alert Level/Aviation Color Code remain at WATCH/ORANGE. All current and recent activity is within Hawaiʻi Volcanoes National Park.