Hawaiian Volcano Observatory


HVO monitors the active volcanoes in Hawaii, assesses their hazards, issues warnings, and advances scientific understanding to reduce impacts of volcanic eruptions. 

Recent Kīlauea Eruption Information


Date published: September 7, 2021

Photo and Video Chronology – Kīlauea – September 7, 2021

HVO field crews—equipped with specialized safety gear—conduct station maintenance, collect water samples, and monitor for new changes from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

Date published: September 2, 2021

New HVO webcam: [KOcam] South of Kīlauea caldera towards 1982 flow

A new USGS Hawaiian Volcano Observatory webcam provides views to the south of Kīlauea caldera in the area of the August 2021 intrusion. Near-live webcam views and a 24-hour animated GIF are available here: [KOcam] - South of Kīlauea caldera towards 1982 flow (usgs.gov)

Date published: September 2, 2021

Volcano Watch — Eruption? Intrusion? What’s the difference?

We know that when a volcano erupts, molten red rock makes it to the surface, while during an intrusion it doesn’t. The difference between the two processes, if we depend on seismicity (earth shaking) or deformation (changes in ground surface) instrumentation, is not obvious. The events during the start of either are identical.  But we can’t be certain that an intrusion will lead to an eruption...

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