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. 


Date published: November 25, 2020

Volcano Watch — Remembering the Thanksgiving Eve Breakout from 2007

Recall this lava flow crisis from years ago: lava breaks out of the normal confines of the long-lived Puʻu ʻŌʻō eruption, with flows advancing relentlessly towards residential areas downslope.  Over several months, the USGS Hawaiian Volcano Observatory and County of Hawai‘i Civil Defense Agency monitor the hazards closely in lower Puna as the situation evolves.   

Date published: November 19, 2020

Volcano Watch — How has topography been modeled at Hawaii’s volcanoes?

In volcano-related cartography and geographic analyses, especially in Hawaii, there is perhaps nothing more important than having an accurate digital model of topography. Such models depict the three-dimensional nature of the land, which elucidate features from past eruptions and help us to determine potential pathways of future activity. But how are these models created?

Date published: November 16, 2020

Photo and Video Chronology – Kīlauea – November 11, 2020

No significant changes at Kīlauea's summit water lake

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