Volcano Watch

A good field geologist is an opportunist. Never content with what outcrops are available, she jumps at the chance to see another one, hoping that it...

In February 1924, the surface of the lava lake at Halema‘uma‘u dropped rapidly and disappeared from view. Throughout March and April, the crater floor...

Early Wednesday morning, just before 1AM on March 13, houses in east Hawai`i began to shake. Without a doubt, it was an earthquake. To those who...

Eruption rate (how much lava comes out of the ground per unit time) is probably the best measure of volcanic activity, and the first step in that...

Since the end of the 2018 lower East Rift Zone (LERZ) eruption on Kīlauea Volcano, questions have surfaced concerning how long it will take for the...

With the end of Kīlauea Volcano's 2018 lower East Rift Zone eruption, the Island of Hawai‘i was able, at long last, to say goodbye to strong vog...

Earthquakes in Hawaii are intimately related to the volcanoes. In addition to helping scientists track moving magma, sometimes they happen simply...

The 2018 lower East Rift Zone (LERZ) eruption of Kīlauea brought an end to the 35+ year eruption at Pu‘u ‘Ō‘ō. With the draining of the summit and the...

One of the most frequent questions asked of USGS Hawaiian Volcano Observatory (HVO) scientists the last several months has been, “Is the lower East...

The field day begins with a summit weather check at first light. It is a reflective moment at 6:15 AM atop Kīlauea Volcano, and the fumarole cracks...