Episode 27 of the Halema‘uma‘u Kīlauea summit eruption began around 9:05 a.m. HST on June 29, 2025. The north vent was active for majority of the eruption and reached approximately 1115 ft (~340 m) high by 11:00 am HST. The south vent became active with low level fountaining of about 65 ft (20 m) just before 4:00 p.m. HST. The fountains lasted just under 11 hours. Tephra (erupted volcanic material) was deposited over the crater rim wall shown in dark grey here. USGS photo by H. Winslow.

A koaʻe kea (white-tailed tropicbird) flies near the lava fountain during episode 27 of the ongoing Kīlauea summit eruption in Halemaʻumaʻu. These birds are often visible in the vicinity of Kaluapele (Kīlauea summit caldera), as they nest in the walls of the caldera. USGS photo by K. Mulliken. 

From the south rim of Kaluapele (Kīlauea summit caldera), the growing tephra cone downwind of the ongoing eruption site in Halemaʻumaʻu is easily visible. On June 29, visitors gathered along the rim near Keanakākoʻi Overlook within Hawaiʻi Volcanoes National Park to view lava fountaining associated with episode 27. USGS photo by K. Mulliken. 

Visitors near the Keanakākoʻi Overlook in Hawaiʻi Volcanoes National Park view lava fountaining during episode 27 of the ongoing Kīlauea summit eruption on June 29. Approximately 1.6 billion gallons (8.1 million cubic yards, 6.2 million cubic meters) of lava erupted during the sustained fountaining phase of episode 27. Lava flows covered approximately 80% of Halemaʻumaʻu crater floor within the southern part of Kaluapele (Kīlauea caldera). USGS photo by K. Mulliken. 

Strands of Pele's Hair collect in low-lying areas near Keanakākoʻi Overlook in Hawaiʻi Volcanoes National Park. USGS photo by K. Mulliken. 

Episode 27 lava fountains at the summit of Kīlauea occurred over about 11 hours on Sunday, June 29. In this view, the vibrant red lehua blossoms of the native ʻōhia tree frame the foreground, while the lava fountain from the north vent is visible in the background.  USGS photo by P. Dotray.