Volcanic ash from Kīlauea observed at 4 000 m (13 100 feet) a.s.l., Hawaiian Islands, United States

Volcanic ash from Kīlauea in the Hawaiian Islands, United States, was observed at 4 000 m (13 100 feet) above sea level at 06:56 UTC on December 24, 2025. The advisory was issued by the Washington VAAC at 07:17 UTC the same day.

According to the VAAC advisory, volcanic ash clouds were observed at altitudes up to flight level 130 (approximately 4 000 m or 13 100 feet). Reports from the Honolulu Meteorological Watch Office indicated ash emissions potentially reaching up to flight level 220 (6 700 m or 22 000 feet), but satellite imagery confirmed ash clouds up to flight level 130 and located up to 28 km (15 nautical miles/17 miles) from the summit. Forecasts indicated the ash could continue moving east-southeast over the following hours. No Aviation Color Code was stated in this advisory.

According to the Global Volcanism Program’s recent weekly report, activity at Kīlauea continued at variable levels as of early December 2025. Recent eruptions were characterized by episodic lava fountaining, incandescence, and intermittent spatter from vents in the Halemaʻumaʻu Crater. Plumes from these events previously reached altitudes up to 4 200 m (14 000 feet) above sea level, with lava covering significant portions of the crater floor.

Kīlauea is a large shield volcano known for frequent effusive eruptions, lava flows, and occasional explosive activity that can generate volcanic ash and gas plumes. Primary hazards include lava inundation, ashfall, volcanic gas, and local ground deformation. The nearest city at risk is Hilo, located about 40 km (25 miles) northeast, with several smaller communities and infrastructure in close proximity to the volcano.