News

Daily updates about ongoing eruptions, recent images and videos of summit and East Rift Zone volcanic activity, maps, and data about recent earthquakes in Hawaii are posted on the HVO website.

Volcano Watch is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory scientists and colleagues.

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April 2, 2019

Photo and Video Chronology - Kīlauea - April 2, 2019

Scientists watch for changes on and within Kīlauea

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March 31, 2019

Photo and Video Chronology - Kīlauea - March 31, 2019

Volcano Watch: "New outcrops make good geology"

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March 28, 2019

Volcano Watch - New outcrops make good geology

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...

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March 22, 2019

Volcano Watch - Did groundwater trigger explosive eruptions at Kīlauea?

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...

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March 15, 2019

Volcano Watch - M5.5 earthquake: a bump in the night toward more typical seismic background

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...

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March 7, 2019

Volcano Watch - How is lava flow thickness measured and why does it matter?

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...

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March 3, 2019

Photo and Video Chronology - Kīlauea - March 3, 2019

Volcano Watch: How fast will this flow cool?

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February 28, 2019

Volcano Watch - How do lava flows cool and how long does it take?

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...

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February 23, 2019

Photo and Video Chronology - Kīlauea - February 23, 2019

Volcano Watch: A new focus on a different volcanic gas

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February 21, 2019

Volcano Watch - Low sulfur emissions mean a new focus on a different volcanic gas

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...

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February 14, 2019

Volcano Watch - Why do some Hawaii earthquakes occur so far offshore?

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

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February 7, 2019

Volcano Watch - Geology of the past, how long will the eruption last?

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...

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