May 21, 2025 — Flaming vents at the summit of Kīlauea

Kīlauea summit livestream camera viewers have recently observed flames within the vents in Halemaʻumaʻu. These flames, which are often a yellowish orange color, result from hydrogen gas burning in air. Hydrogen is a minor component of volcanic gas released from the hot magma below, and it can sometimes be ignited causing the flames observed recently. This video, captured during the early evening on May 21, shows flames active within the north vent. USGS video by M. Cappos.