Volcano Watch

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...

Welcome to Hawai‘i Island's 5th annual Volcano Awareness Month!

On January 3, 2014, Kīlauea's Pu‘u ‘Ō‘ō eruption surpasses 31 years of activity. The ongoing eruption has evolved tremendously during its complex...

During the course of an eruption, a volcano can produce a variety of hazards, such as lava flows, pyroclastic flows, and lahars (volcanic mudflows)...

The gas emissions from Kīlaueaa volcano have been variable within a fairly steady range for the past few years; however, the numbers that we use to...

During the past year, the USGS Hawaiian Volcano Observatory (HVO), like other federal agencies, dealt with the challenges of budget cuts...

Last week we showed that Kīlauea has explosive eruptions that can carry volcanic ash (less than 2 mm or 0.08 in across) and small lapilli (2–64 mm or...

In past Volcano Watches, we've emphasized a radically new way to view Kīlauea—as an explosive volcano. Though not explosive now, it was dominantly...

At the U.S. Geological Survey's (USGS) Hawaiian Volcano Observatory (HVO), we focus on keeping up with the flow of data coming into our systems and...

We are currently sandwiched between the Halloween and Thanksgiving holidays as the inexorable march of time brings the winter festivals ever closer...

About a year ago, a Volcano Watch article described recent changes at Lake Waiau, the tiny lake just below Mauna Kea's summit that is Hawai‘i's only...

Earlier this year, the Alaska Volcano Observatory (AVO) completed its first 25 years of operation. It received widespread acknowledgement for its...

On October 17, at 10:17 a.m., HST, thousands of Hawai‘i residents took part in the state’s first Great Hawaii ShakeOut. The Hawaiian Volcano...

The Earth's surface, oceans, and atmosphere are readily accessible to direct exploration.

The Hawaiian Volcano Observatory will remain operational during the lapse of federal government appropriations.