News

On May 4, 2018, a powerful magnitude-6.9 earthquake on the south flank of Kīlauea Volcano shook the Island of Hawai‘i. It was the largest quake in...

Data Release: Volcanic ash leachate and rainwater chemistry from increased 2018 activity of Kīlauea Volcano, Hawaiʻi

We often talk about monitoring Yellowstone. To most people, this implies tracking earthquake activity over time, or how the ground moves up and down...

My 37-year stint with the U.S. Geological Survey—16 years at the Cascades Volcano Observatory (CVO) and 21 at the Hawaiian Volcano Observatory (HVO)...

No significant changes at Fissure 8 or Pu‘u ‘Ō‘ō

One of the most common questions asked of YVO is "when is the next big one?" This is an interesting question, given the multiple potential natural...

Before and after satellite images of Leilani Estates subdivision

The USGS Hawaiian Volcano Observatory (HVO) uses a diverse set of instruments to monitor active volcanoes in Hawaii. These include seismometers, gas...

Overview of Kīlauea Volcano's activity from April 30 through September 22, 2018.

In about 500 BCE, Heraclitus of Ephesus declared "life is flux." Today, we know the saying better as, "the only constant is change." This is true of...