Images

On Friday, January 16, USGS Hawaiian Volcano Observatory geologists conducted an overflight of Kīlauea summit to map the effects of episode 40 and collect samples of the lava. This wide-angle photo shows the episode 40 flows reaching the crater wall in the foreground, with the vents in the distance.

This photograph shows the current vent area at the summit of Kīlauea, with passive outgassing plumes originating from the south (left) and north (right) vents. The plumes are carried to the southwest by the tradewinds.

A USGS Hawaiian Volcano Observatory geologist collects a sample of the short lava flows that were erupted from the south vent just before episode 40 lava fountaining began on January 12, 2026. All sampling in Halema‘uma‘u crater is done with permission from Hawai‘i Volcanoes National Park.

Left: Lava fountains on September 6, 1969, during the Maunaulu eruption. Right: Lava fountains on July 9, 2025, during the Halemaʻumaʻu eruption (episode 28). USGS photos.

On January 12, 2026, Kīlauea had its 40th fountaining episode of the ongoing eruption within Halema‘uma‘u. This view was taken at 10:50 a.m. H.S.T. from the publicly accessible viewing area at Uēkahuna within Hawaiʻi Volcanoes National Park, showing north vent fountaining. USGS photo by N. Deligne. 

This reference map depicts the Kīlauea summit eruption within Halema‘uma‘u crater that began on December 23, 2024. The data for this map were collected during a Hawaiian Volcano Observatory helicopter overflight on January 2, 2026; as such, the provided statistics are reflective of the first thirty-nine episodes of the eruption through December 24, 2025.

On January 12, 2026, Kīlauea had its 40th fountaining episode of the ongoing eruption within Halema‘uma‘u. This photo was taken at 4:37 p.m. HST from the publicly accessible viewing area at Kūpinaʻi Pali (Waldron's Ledge) within Hawaiʻi Volcanoes National Park, showing north vent fountaining. The episode ended about an hour and a half after this photo was taken.

USGS Hawaiian Volcano Observatory geologists observe episode 40 fountains from the Uēkahuna overlook within Hawai‘i Volcanoes National Park. This episode had multiple days of precursory overflows from both the north and south vents, leading to fountains primarily from the north vent starting on January 12 and reaching up to 800 feet (250 meters).

Episode 39 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea volcano began on December 23, 2025, at approximately 8:20 p.m. and ended abruptly at 2:13 a.m. HST on December 24, 2025, after about 6 hours of continuous fountaining. USGS photograph by Lis Gallant. 

The lava fountains that erupted during episode 39 at the summit of Kīlauea were visible through the rain and mist around 10 p.m. HST on December 23. This episode was actively erupting for just about 6 hours from December 23-24, 2025. USGS photo. 

Kīlauea began its 39th lava fountaining episode the night of December 23, one year to the day from when this eruption began. This view was taken from the publicly accessible viewing area on Crater Rim Drive near Keanakākoi Overlook within Hawaiʻi Volcanoes National Park.

Photo compilation of the 38 lava fountaining episodes that occurred the first year of the ongoing eruption at the summit of Kīlauea. The eruption started on December 23, 2024, and the eruption continues: episode 39 is expected soon.

This map shows thickness values for lava flows within Halema‘uma‘u crater from the Kīlauea summit eruption that began on December 23, 2024. These values were calculated by topographic differencing between a digital elevation model collected on December 9, 2025—after eruptive episode 38—and one from before the eruption began.

It's been one year since a unique episodic lava fountaining eruption began at Kīlauea’s summit on December 23, 2024—a style of activity not seen in nearly 40 years! Over the past 12 months, Halemaʻumaʻu crater has hosted 38 eruptive episodes, each lasting from a few hours to more than a week, separated by quiet pauses.

Photo calendar compilation of the 38 lava fountaining episodes that occurred the first year of the ongoing eruption at the summit of Kīlauea, with month time-stamps. The eruption started on December 23, 2024, and the eruption continues: episode 39 is expected soon.

Aerial photo showing the tephra hill on the western margin of Kaluapele (Kīlauea caldera), which has grown over the past year of 38 lava fountaining episodes within Halema‘uma‘u. The arcuate scarps are from landslides of tephra that have fallen back into the caldera near the north and south vents that have erupted all the material making up the tephra hill.

During a monitoring helicopter overflight on December 19, 2025, USGS geologists captured this southwest looking photo of the tephra hill that has grown over the past year of episodic lava fountaining at the summit of Kīlauea.

USGS staff deployed a new V3cam on the south rim of Halemaʻumaʻu crater at the summit of Kīlauea volcano, within Hawaiʻi Volcanoes National Park. The camera, a pan-tilt-zoom model, replaces the V3cam that was located to the west, which was destroyed during episode 38 lava fountaining on December 6, 2025. USGS photo by M. Patrick. 

This aerial view, captured during a USGS Hawaiian Volcano Observatory monitoring overflight on December 19, 2025, shows the Southwest Rift Zone of Kīlauea between the summit caldera and the prominent scoria cones of Puʻukoaʻe.

V3cam on the south rim of Halemaʻumaʻu crater, Kīlauea volcano. USGS Hawaiian Volcano Observatory staff deployed the new camera on December 19, 2025, with permission from Hawaiʻi Volcanoes National Park. USGS photo by M. Patrick. 

Aerial photograph looking at the southwestern rim of Kaluapele (Kīlauea caldera), where the original V3 livestream camera was located. This camera was buried under about 10 meters (32 feet) of molten spatter and tephra during inclined lava fountains of episode 38 on December 6, 2025. The upper third of the cliff face is this new spatter deposited during episode 38.