Volcano Watch

Hawai‘i County is the fastest-growing region in the State of Hawaii. Its relatively inexpensive real estate, along with population growth, spurs more...

The recent anniversary of Kīlauea's May 1924 explosive summit eruptions reminds us of the sometimes violent interactions that occur when relatively...

Landslides are hazards in areas where slopes are steep. The degree of the hazard depends on the type of rocks that make up the slope. Large landslides...

Ninety years ago this month, Kīlauea was exploding.

During the past week, we have been keeping a close watch on the Northern Mariana Islands (NMI), as seismometers on the islands record high levels of...

The Kahauale‘a 2 lava flow, fed by a vent on the northeast edge of the Pu‘u ‘Ō‘ō crater, is currently the only active flow along Kīlauea Volcano's...

When Mount St. Helens reawakened in late September 2004 with an intense swarm of earthquakes and very noticeable uplift of the volcano's crater floor...

April is again Tsunami Awareness Month in the State of Hawaii. As in previous years, groups across the state are conducting exercises and other...

Every year about this time, we write about the chemistry of lava erupting from Kīlauea Volcano.

March marks the anniversary of the most recent eruption of Mauna Loa, which began on March 25, 1984. It also reminds us of a much more destructive...

March 25 is the 30th anniversary of the most recent eruption of Mauna Loa, Hawai‘i island's largest volcano.

Six years is a blink of an eye in geologic time, but it can fly by for people, too. In a way, it doesn't seem very long ago that the summit eruption...

March 5, 2014, marked the third anniversary of the onset of Kīlauea Volcano's four-day-long Kamoamoa fissure eruption. This brief episode marked the...

Soon after a large earthquake occurs, the USGS Hawaiian Volcano Observatory publicizes the preliminary location and magnitude. Have you ever wondered...

Ask a child to draw a volcano, and he or she will likely sketch a cone-shaped mountain erupting lava high into the air (with possibly a dinosaur or...

While most football fans have recovered from Super Bowl XLVIII, the most exciting time of year is just beginning for sled-dog-racing enthusiasts. As...

The staff of the USGS Hawaiian Volcano Observatory (HVO) sends a big "mahalo" to everyone who attended our public presentations during Hawai‘i Island...

We conclude our Volcano Awareness Month series on the important questions about how Hawaiian volcanoes work with an article on monitoring volcanic...

In our January Volcano Watch articles during Hawai‘i Island's 5th annual Volcano Awareness Month, we are exploring important questions about how...

In this second of four Volcano Watch articles addressing the "big" questions faced by volcanologists studying Hawaiian volcanoes today, we will focus...