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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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Volcano Watch — November earthquakes

Volcano Watch — November earthquakes

November is a month that always makes HVO seismologist Jennifer Nakata a little nervous. Nakata says her discomfort surfaces about this time each year...

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Volcano Watch — Lava tubes cool slowly

Volcano Watch — Lava tubes cool slowly

If the flow of lava in a tube ceased, how long would it take for the tube to cool? Does the temperature in a newly emptied tube drop by an equal...

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Volcano Watch — Worrying realistically

Volcano Watch — Worrying realistically

Whether the issue is big, little, real, or imagined, we all worry. Most of us would agree, though, that it is better to worry about things we can do...

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Volcano Watch — How does pahoehoe flow?

Volcano Watch — How does pahoehoe flow?

How do pahoehoe lavas flow? Over the years, many scientists have watched and measured active lava flows, and now we have a pretty good idea of the...

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Volcano Watch — The fall Vog season opens with symposia

Volcano Watch — The fall Vog season opens with symposia

Recently, fall "vog season" returned to east Hawai`i, ushered in with phone calls to the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO)...

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Volcano Watch — Current eruption of Kīlauea produces little ground deformation

Volcano Watch — Current eruption of Kīlauea produces little ground deformation

A volcano is a complex system. During periods of sustained eruption, such as the present time, Kīlauea Volcano undergoes little internal change.

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Volcano Watch — Few changes on the flow field

Volcano Watch — Few changes on the flow field

The eruption of Kīlauea Volcano has settled into a stable vent site, extrusive rate, and route to the sea. This statement would have been unimaginable...

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Volcano Watch — Lava flows of east Puna

Volcano Watch — Lava flows of east Puna

Lava flows are the biggest volcanic hazard in east Puna. In the past two centuries, four eruptions from Kīlauea's east rift zone have produced...

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Volcano Watch — Director of the USGS announces retirement

Volcano Watch — Director of the USGS announces retirement

The Director of the U.S. Geological Survey, Gordon Eaton, announced his retirement last week at the agency's National Center in Reston, VA. Dr. Eaton...

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Volcano Watch — Lava entering sea

Volcano Watch — Lava entering sea

The billowing steam plumes rising from where lava enters the ocean are an indication that Kīlauea's eruption may be returning to normal, after several...

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Volcano Watch — Lava's not fire

Volcano Watch — Lava's not fire

"A curtain of fire extended far down the rift zone. Fire fountains played to great heights. Burning embers fell to the ground. Smoke drifted downwind...

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Volcano Watch — Earthquake network serves volcano and tsunami warning

Volcano Watch — Earthquake network serves volcano and tsunami warning

For over a decade, we have watched lava flows from Kīlauea overrun nearly 40 square miles of land, destroying precious forests, communities, and...

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