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Episode 51 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 51 reached about 950 feet (290 meters), the 18th highest fountain height of 54 recorded episodes and 36% above the median of 700 ft.
The episode erupted an estimated 5.1 million cubic metres of lava, essentially the median (5.2M m³).
Fountaining lasted 8 hours, 20% below the median of 10 hours. Kīlauea's episodes are short and intense: most last hours, not days.
The summit then paused for 13 days while magma recharged before the next episode began.
Comparisons computed across the 54 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. Episode 51 ended at 4:46 p.m. HST on July 15. Inflation models indicate another episode is likely, with the preliminary forecast between July 24 to August 3.
Kīlauea volcano is not erupting; the summit eruption in Halemaʻumaʻu is paused. Episode 51 ended at 4:46 p.m. HST on July 15. Re-inflation indicates another episode is likely but more data are needed to determine the forecast.
Episode 51 of the ongoing Halemaʻumaʻu eruption continues at 10:20 a.m. HST on July 15. Volcanic Activity: Episode 51 of lava fountaining in Halemaʻumaʻu began at the summit of Kīlauea began at 8:30 a.m. HST on July 15 and continues as of this notice. Fountain heights are at 950 feet (290 meters) and effusion rates have reached a peak of about 400 cubic yards per second (300 cubic meters per second) at 10:30 a.m. HST July 15. The National Weather Service reports that the plume from this eruption is reaching 18000 feet above sea level. Ground-level sensors near the eruptive vents indicate that
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