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Episode 54 is one of the fountaining episodes of Kīlauea's ongoing Halemaʻumaʻu eruption, which has produced numbered episodes every one to four weeks since December 2024. The daily USGS status entries that reference it are collected below, and the full daily updates log has the complete day-by-day record.
Lava fountains in Episode 54 reached about 490 feet (150 meters), the 38th highest fountain height of 55 recorded episodes and 30% below the median of 710 ft.
The episode erupted an estimated 4 million cubic metres of lava, 23% below the median of 5.2M m³.
Fountaining lasted 9 hours, 10% below the median of 10 hours. Kīlauea's episodes are short and intense: most last hours, not days.
The summit then paused for 52 days while magma recharged before the next episode began.
Comparisons computed across the 55 eruptive episodes USGS has recorded for the ongoing Halemaʻumaʻu eruption. Figures are USGS preliminary values and can be revised.
Kīlauea volcano is not erupting. The summit eruption in Halemaʻumaʻu is paused. Reinflation has been minimal since the end of lava fountaining episode 54; more data are needed to model the forecast window for the next episode.
Kīlauea volcano is not erupting, as the summit eruption in Halemaʻumaʻu is paused. Reinflation has been minimal since the end of lava fountaining episode 54; more tilt data are needed to model the forecast window for the next episode.
Kīlauea volcano is not erupting; the summit eruption in Halemaʻumaʻu is paused following lava fountaining episode 54 on August 25. Reinflation has stopped. More data are needed to determine the forecast window for the next episode.
Kīlauea volcano is not erupting; the summit eruption in Halemaʻumaʻu is paused. Lava fountaining episode 54 ended at 7:33 p.m. HST on August 25. Reinflation indicates another episode is likely, but more data are needed to determine the forecast.
Episode 54 of the ongoing Halemaʻumaʻu eruption began at 10:30 HST on August 25, 2026. Volcanic Activity: Episode 54 of lava fountaining in Halemaʻumaʻu began at the summit of Kīlauea began at 10:30 HST on August 25, 2026. North vent fountains are currently about 50-75 feet (15-20 meters) meters high and are expected to grow rapidly to about 500 feet (150 meters) in the next 1-2 hours. Weak spattering began yesterday and became more continuous after midnight. Overflows from the north vent began after 6 a.m. this morning, with continuous low-level fountaining starting around 9 a.m. Ground-level
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