Volcano Watch

It is natural for most people, including scientists, to think that the aim of a volcano observatory is to observe and measure ongoing activity...

After years of fund-raising, Thomas Jaggar, Jr., finally got the Hawaiian Volcano Observatory (HVO) up and running at Kīlauea Volcano in January 1912...

Although Kīlauea's eruptive activity has been relatively uneventful the past 11 months, the consensus at the Hawaiian Volcano Observatory (HVO) is...

As we enter the 2012 holiday season, Kīlauea Volcano's continuing eruptions in Halema‘uma‘u at the summit and at Pu‘u ‘Ō‘ō on the middle east rift...

Considering the recent activity in Halema‘uma‘u Crater, just how reliable is its lava-lake level for judging the potential of an upcoming eruptive...

The last month was busy at the Hawaiian Volcano Observatory, with scientists keeping a keen eye on monitoring data and preparing for a possible change...

Last week we discussed the change in seismicity that has occurred at Kīlauea.

Astute watchers of recent earthquake activity at Kīlauea have noticed a marked increase of earthquakes, both within the summit caldera and in a...

A new fact sheet on Mauna Loa titled "Mauna Loa—History, Hazards, and Risk of Living With the World’s Largest Volcano" is now available. This week's...

On trade wind days, which prevail much of the year, visitors to Kīlauea's summit are greeted by the majestic sight of a towering eruption plume that...

Recently, Hawaiian Volcano Observatory scientists have been asked if Hawai‘i Island's geothermal development causes subsidence of the ground surface...

It seems logical that if underground magma can start an eruption by forcing its way to the surface, one might also start an eruption by opening a...

On September 24, 1971, Kīlauea’s southwest rift zone erupted for the first time in 52 years.

As days get shorter and nights cooler, we look to the summits of majestic Mauna Kea after rainstorms to see whether there might be a cap of pure white...

The relatively small explosive eruption of Iceland's Eyjafjallajökull volcano more than two years ago focused attention on the hazards of volcanic ash...

In late August, volcano scientists from around the world gathered in Waikōloa, Hawai‘i, and shared what they have learned about how Hawaiian volcanoes...

The Hawaiian Volcano Observatory has monitored, studied, and served as an information source about Hawaiian volcanism for the past 100 years.

In 1987, to commemorate the 75th anniversary of the founding of the Hawaiian Volcano Observatory (HVO), over 400 Earth scientists from around the...

Seldom does one find evidence of an eruption where none was known before. We generally assume that Kīlauea erupts only at the summit or along its two...

Tuesday morning, July 31, started as a typical office day at the Hawaiian Volcano Observatory (HVO). Beginning at 10:25 a.m., a number of text...