Volcano Watch

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...

At 3:45 a.m., Friday, July 19, 1974, a flurry of earthquakes on Kīlauea triggered the USGS Hawaiian Volcano Observatory's "tremor alarm." In response...

Most of us think of gravity as a constant. Students of physics know that gravitational acceleration is 9.8 m per second-squared (32 ft/s/s), while the...