This Thursday, May 17, 2018 image provided by the U.S. Geological Survey shows a view of the ash plume resulting from an early morning explosion at Kilauea Volcano, in Hawaii. (U.S. Geological Survey/HVO via AP)
(CNN) -- An eruption from the Kilauea volcano's summit shot ash and smoke into the air early Thursday on Hawaii's Big Island, and the resulting plume is expected to cover the surrounding area, according to the Hawaiian Volcano Observatory.
The volcanic cloud reached 30,000 feet, the US Geological Survey said. That's a little below the cruising altitude of a jetliner.
"At any time, activity may again become more explosive, increasing the intensity of ash production and producing ballistic projectiles near the vent," the USGS said. "Ballistic projectiles may be produced should steam-driven explosions occur. Impacts will be limited to an area around Halemaumau."