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January 23, 2025

Episode 5 of the Kīlauea summit eruption within Halemaʻumaʻu was brief. It began at 2:30 p.m. on January 22 and paused Thursday morning, January 23, at 4:30 a.m. HST. Kīlauea summit has shown inflation since episode 5 ended; if it continues, it's possible for another episode to begin as early as the next 3-4 days, but more time is needed to accurately estimate a probability window.

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In the early evening of Wednesday, January 22, just a few hours into the fifth episode of Kīlauea's summit eruption, USGS Hawaiian Volcano Observatory geologists captured this high-resolution video of lava fountains at the northern eruptive vent (right) within Halema‘uma‘u crater. The southern eruptive vent (left) was degassing but not actively erupting at the time. USGS video by M. Zoeller.
Color photograph of erupting vent
This telephoto view of the northern eruptive vent within Halema‘uma‘u crater at the summit of Kīlauea was captured through the lens of a laser rangefinder late in the afternoon on Wednesday, January 22, 2025. USGS Hawaiian Volcano Observatory geologists used the rangefinder to measure lava fountains consistently reaching 100 feet (30 meters) in height. USGS photo by M. Zoeller.
Color photograph showing eruption at sunset
This panorama of Kīlauea summit eruption's fifth episode was captured by USGS Hawaiian Volcano Observatory geologists around sunset on Wednesday, January 22. A tripod camcorder on the crater rim in the foreground was used to record high-resolution video of lava fountains at the northern eruptive vent within Halema‘uma‘u crater. USGS photo by M. Zoeller.
Color photograph of scientist outline against eruption glow
A USGS Hawaiian Volcano Observatory geologist's silhouette in front of the illuminated gas plume emanating from Halema‘uma‘u crater on Wednesday, January 22, during the fifth episode of Kīlauea's ongoing summit eruption. USGS photo by M. Zoeller.

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