News

 Yellowstone National Park contains rock formations that span over half the Earth's 4.6-billion-year lifespan! 

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.2 earthquake located beneath Kīlauea Volcano's south flank on...

Halema‘uma‘u crater lake on January 31

When I was seven years old, I won my county's earthquake safety poster contest. I remember going to a special award luncheon with the mayor, who...

Hydrothermal explosions are the most likely of Yellowstone's various volcanic hazards, and the potential for additional future explosions is not...

As many residents of the Island of Hawai‘i can attest, volcanic gases can stink—literally. But for those of us at the USGS Hawaiian Volcano...

Routine overflight of Kīlauea's East Rift Zone

The U.S. Geological Survey produces seismic hazard maps for the United States and the 2018 nationwide long-term assessment shows that the Yellowstone...

Continued slow rise of water at bottom of Halema‘uma‘u

Since the Hawaiian Volcano Observatory (HVO) was founded by the visionary Dr. Thomas A. Jaggar in 1912, a senior scientist has been responsible for...