USGS HVO Press Release — Halema‘uma‘u Gas Plume Becomes Ash-laden

Release Date:

There is now continuous emission of ash from the new gas vent in Halema‘uma‘u Crater, turning the formerly white cloud of fume a dusty-brown color.

The top of the ash plume, which is currently being blown to the southwest of the Crater, reaches 0.5 to 1.0 mile above ground level. Hawai‘i aviation agencies have been notified of the potential hazard to aircraft.

Last night, small incandescent particles were observed erupting from the vent below the Halema‘uma‘u Overlook. A few particles were ejected with sufficient velocity to be deposited on the rim of Halema‘uma‘u Crater. This morning, Hawaiian Volcano Observatory geologists reported finding Pele's hair, Pele's tears, and spatter in the overlook area, indicating that particles ejected overnight included molten lava—the first erupted from the new vent, which is now 30–35 m (100 ft) wide. The largest fragments of spatter, or blobs of molten rock, found on the crater rim are 10 cm (4 inches) in size.

The amount of lava erupted from the vent last night was small, but it represents the first lava erupted from anywhere in Halema‘uma‘u since 1982. Previous eruptions included lava flowing into the crater from fissure eruptions on its southwest rim in 1974 and 1971 and an 8 month eruption in Halema‘uma‘u in 1967–1968 that created a lake of lava that covered the entire crater floor.

The Hawaiian Volcano Observatory continues to monitor the activity. Photos, text updates, a new Halema‘uma‘u Crater webcam, and details about the Kīlauea 1924 explosive eruption can be found at the HVO website

Daily updates about ongoing eruptions, recent images and videos of summit and East Rift Zone volcanic activity, maps, and data about recent earthquakes in Hawaii are posted on the HVO website at

USGS provides science for a changing world. Visit, and follow us on Twitter @USGS and our other social media channels

Subscribe to our news releases via RSS, or Twitter

Links and contacts within this release are valid at the time of publication.