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Around 11 a.m. HST on August 25, 2026, USGS Hawaiian Volcano Observatory field crews had an aerial view of a growing lava fountain at the summit of Kīlauea during the onset of episode 54.
Around 11 a.m. HST on August 25, 2026, USGS Hawaiian Volcano Observatory field crews had an aerial view of a growing lava fountain at the summit of Kīlauea during the onset of episode 54.
A USGS Hawaiian Volcano Observatory gas scientist collects FTIR (Fourier transform infrared spectrometer) data during lava fountaining episode 54 in Halemaʻumaʻu crater at the summit of Kīlauea. This data is used to measure the chemical composition of volcanic gas being emitted during eruptive episodes. USGS photo by C. Gansecki.
A USGS Hawaiian Volcano Observatory gas scientist collects FTIR (Fourier transform infrared spectrometer) data during lava fountaining episode 54 in Halemaʻumaʻu crater at the summit of Kīlauea. This data is used to measure the chemical composition of volcanic gas being emitted during eruptive episodes. USGS photo by C. Gansecki.
The lava fountain erupting from the north vent in Halemaʻumaʻu at the summit of Kīlauea during episode 54 on August 25, 2026, generated a lava flow on the caldera-wall side of the vent complex. This lava flow skirted the northwest part of the caldera wall.
The lava fountain erupting from the north vent in Halemaʻumaʻu at the summit of Kīlauea during episode 54 on August 25, 2026, generated a lava flow on the caldera-wall side of the vent complex. This lava flow skirted the northwest part of the caldera wall.
This panoramic photo from the northwest rim of Halemaʻumaʻu on August 12 shows Kīlauea summit eruption episode 53 lava fountaining and the spatter-fed flow running along the northern perimeter of the crater floor (bottom of photo). The V1cam and KWcam site is visible at the left edge of the photo. USGS photo by M. Patrick.
This panoramic photo from the northwest rim of Halemaʻumaʻu on August 12 shows Kīlauea summit eruption episode 53 lava fountaining and the spatter-fed flow running along the northern perimeter of the crater floor (bottom of photo). The V1cam and KWcam site is visible at the left edge of the photo. USGS photo by M. Patrick.
As the sun set on August 12, USGS Hawaiian Volcano Observatory geologists had excellent views of Kīlauea summit eruption episode 53 lava fountaining in the clear weather. The fountain shape changed rapidly, often shutting off the spatter-fed flow on the north side of the vent (right side of photo). USGS photo by M. Patrick.
As the sun set on August 12, USGS Hawaiian Volcano Observatory geologists had excellent views of Kīlauea summit eruption episode 53 lava fountaining in the clear weather. The fountain shape changed rapidly, often shutting off the spatter-fed flow on the north side of the vent (right side of photo). USGS photo by M. Patrick.
A closer look at the spatter fallout zone during Kīlauea summit eruption episode 53 lava fountaining on August 12, 2026. This was the source of the spatter-fed flow directed towards the northern portion of Halemaʻumaʻu crater. USGS photo by M. Patrick.
A closer look at the spatter fallout zone during Kīlauea summit eruption episode 53 lava fountaining on August 12, 2026. This was the source of the spatter-fed flow directed towards the northern portion of Halemaʻumaʻu crater. USGS photo by M. Patrick.
The spatter-fed flow on the north side of the vent was intermittent during Kīlauea summit eruption episode 53 lava fountaining on August 12, 2026. Changes in the shape of the fountain and spatter fallout zone often restarted the flow down the steep slopes of the vent cone. USGS photo by M. Patrick.
The spatter-fed flow on the north side of the vent was intermittent during Kīlauea summit eruption episode 53 lava fountaining on August 12, 2026. Changes in the shape of the fountain and spatter fallout zone often restarted the flow down the steep slopes of the vent cone. USGS photo by M. Patrick.
USGS Hawaiian Volcano Observatory geologists on the northwest rim of Halemaʻumaʻu capture video and make observations of the fountain behavior during Kīlauea summit eruption episode 53 on August 12, 2026. USGS photo by M. Patrick.
USGS Hawaiian Volcano Observatory geologists on the northwest rim of Halemaʻumaʻu capture video and make observations of the fountain behavior during Kīlauea summit eruption episode 53 on August 12, 2026. USGS photo by M. Patrick.
This wide-angle, panoramic photo from the northwest rim of Halemaʻumaʻu shows the outgassing plume from Kīlauea summit eruption episode 53 lofting vertically and then drifting west—towards the summit of Mauna Loa—on August 12, 2026. The sun was setting behind the plume, creating an orange tint in the early evening. USGS photo by M. Patrick.
This wide-angle, panoramic photo from the northwest rim of Halemaʻumaʻu shows the outgassing plume from Kīlauea summit eruption episode 53 lofting vertically and then drifting west—towards the summit of Mauna Loa—on August 12, 2026. The sun was setting behind the plume, creating an orange tint in the early evening. USGS photo by M. Patrick.