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The Kīlauea Halema‘uma‘u eruption resumed with the start of episode 9 the morning of February 11, 2025. Both the north and south vent were active the evening of February 11, with the north vent lava fountain reaching heights of 50-60 meters (160-200 feet) and a max height of 75 meters (250 feet) at 7:40 p.m. HST.

View of episode 9 lava fountaining in Halema‘uma‘u at the summit of Kīlauea the evening of February 11, 2025. Lava fountain heights were decreased from the morning of February 11, when episode 9 began. At approximately 8:15 p.m.

On the evening of February 11, 2025, USGS geologists deployed to the rim of Kaluapele to observe and document episode nine of the ongoing December 2024–February 2025 Halema‘uma‘u eruption at the summit of Kīlauea. Near the KWcam site, USGS geologists checked on timelapse cameras that have been capturing the ongoing eruption since December 23, 2024.

A closer look at the northern vent at the summit of Kīlauea during the morning of February 4, 2025. Lava fountaining was through a pond contained within the cone, and lava from the pond drained eastward through a notch in the cone wall, then into a narrow spillway channel. USGS photo by M. Patrick.

A ranger in Hawai‘i Volcanoes National Park talks to a visitor at the Volcano House, where there have been good views of the recent lava fountaining. USGS photo by M. Patrick.

A new episode of lava fountaining began late last night at the summit of Kīlauea, with continued fountaining this morning. Both the north and south vents were active this morning, February 4, with the northern fountains typically about 130-165 feet (40-50 meters) high. In the upper right corner, recent snow on Mauna Kea is visible. USGS photo by M. Patrick.

During the Kīlauea summit eruption's eighth episode, two eruptive vents have been actively fountaining. This telephoto view of those two vents was captured from the floor of Halema‘uma‘u crater by geologists visiting to collect lava samples on Tuesday, February 4.

The thick volcanic gas plume produced from the lava fountaining at the summit of Kīlauea created a red tinge to the sun. USGS photo by M. Patrick.

This view from the western caldera rim shows the fountaining at the summit of Kīlauea during the morning of February 4, 2025. Lava fountains were supplying lava into a large ponded area, which had numerous small channels sending lava north and east across the crater floor. USGS photo by M. Patrick.

The rising gas plume from the lava fountains had a mirror-like resemblance to an ‘Ōhi‘a tree at the Volcano House. USGS photo by M. Patrick.

USGS Hawaiian Volcano Observatory field crews observed weak spattering from the interior of the north vent at Halema‘uma‘u during a Kīlauea summit field shift on February 3, 2025.

During a monitoring overflight on February 3, 2025, USGS Hawaiian Volcano Observatory crews had excellent views of Kīlauea's west crater walls, where tephra deposits have been exposed following the collapse of the summit in 2018. This image shows talus (rock debris from the crater walls) surrounding a triangle-shaped exposure of tephra that is many meters thick.

During a helicopter overflight around 7:30 a.m. HST on February 3, 2025, USGS Hawaiian Volcano Observatory field crews observed weak spattering in the north vent of the 2024-2025 Kīlauea summit eruption.

During a monitoring overflight around 7:30 a.m. HST, USGS Hawaiian Volcano Observatory field crews observed that spatter had built up a small cone within the north vent of the 2024-2025 Kīlauea summit eruption cones. The vent was weakly spattering within the cone during the flight. USGS photo by K. Lynn.

Episode 8 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea began last night, February 3, 2025, at 9:52 p.m. HST. This view, captured just after 10 p.m. HST by the S2cams shows vigorous fountaining feeding multiple lava flows. USGS photo.  

Sunrise at the summit of Kīlauea this morning, January 28, 2025. Episode 7 of the ongoing Halemaʻumaʻu eruption began at 6:42 p.m. HST last night, January 27, and continued through the night. Lava fountains fed a small flow onto the crater floor.

USGS Hawaiian Volcano Observatory geologists observed episode 7 of the Kīlauea Halema‘uma‘u eruption on the morning of January 28, 2025. The eruption resumed in both the north and south vents with fissure fountains and outpouring of lava flows on the caldera floor.

Telephoto view of both eruptive vents in the Kīlauea Halema‘uma‘u eruption during episode 7 on January 28, 2025. Both vents reactivated during this episode. The north vent (upper left vent) fountain produced lava channels outpouring from its base but also out the sides of the vent as seen in this photo.

View of the south vent erupting during episode 7 of the Kīlauea Halema‘uma‘u eruption. The south vent reactivated for episode 7 (January 27-28) though it was relatively inactive during the prior episode 6. The vent shows a fountain and lava flow channel originating from the base of the cone. Lava has pooled at its base and flows down to the caldera floor.

Overview photo of episode 7 from the Kīlauea Halema‘uma‘u eruption. This photo was taken the morning of January 28, 2025, during a USGS Hawaiian Volcano Observatory morning monitoring field shift. Both vents (north and south) were active during this episode, with fountains and lava flows.

The north vent that was erupting during episode five of the recent Kīlauea summit eruption has a small patch of lava that was weakly spattering during the morning of January 24, 2025. USGS photo by J. Barnett.