News

Remember when a little puddle of green water was spotted in Halemaʻumaʻu? Time flies, because that was late July 2019—over five years ago! And because...

How often do hydrothermal explosions occur in Yellowstone National Park? It all depends on the size of the event.

"Time to go"… words that none of us at the USGS Hawaiian Volcano Observatory (HVO) wanted to hear.

The hydrothermal explosion at Biscuit Basin on July 23, 2024, was a spectacular event and emphatically demonstrates an underappreciated hazard in the...

The upper East Rift Zone (UERZ) of Kīlauea has been shaking more than normal, with nearly 1,500 earthquakes between July 22 and 25. The activity is...

This spring, geologists discovered a small crater at Norris Geyser Basin that, based on monitoring data, appears to have formed during a minor...

Measurement of volcanic gases is critical for both public safety and understanding volcanic activity—and everything we measure relies on the wind.

While VALT will be missed for sentimental reasons, plans are underway to install a replacement on the crater floor away from the reach of Crater...

For a couple nights in May an extreme solar storm created a beautiful night sky for many people in areas that normally are too far away to see auroras...

Island of Hawaiʻi residents are used to feeling the ground shake beneath them. From subtle shakes that feel like wind, to abrupt jolting that knocks...