Volcano Watch

This week, a group of volcanic gas scientists from across the United States, including staff from the USGS Hawaiian Volcano Observatory (HVO), will...

"Volcano Watch," weekly articles written primarily by U.S. Geological Survey Hawaiian Volcano Observatory (HVO) staff and occasionally by USGS...

The pali (cliffs) of Kīlauea's south flank are some of the volcano's most striking features. Reaching up to 500 m (1500 ft) high, they stand out...

Last month, the entire world celebrated the 50th anniversary of Apollo 11's triumphant flight to the moon and the first human footsteps on the surface...

The slowly deepening pond of water on the floor of Halema‘uma‘u, the first in recorded history, has captured the interest of media and the public...

The recent appearance of water at the bottom of Halema‘uma‘u, a crater at the summit of Kīlauea Volcano, has attracted wide attention and generated...

USGS Hawaiian Volcano Observatory (HVO) scientists usually base their research on observations, either visual or instrumental. Interpretations come...

In ongoing media coverage of demonstrations at the base of Mauna Kea, many hundreds of people can be seen standing on a black lava flow that surrounds...

One year ago, activity on Kīlauea Volcano was remarkably different than it is today. Lava was flowing toward the sea, robust ocean entry plumes were...

Shortly before midnight on July 5, 1975, Mauna Loa Volcano awakened with a shudder. Quickly responding to a seismic earthquake/tremor alarm at 11:18 p...