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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 — Episode 51 vents now mostly inactive

Volcano Watch — Episode 51 vents now mostly inactive

The episode 51 vents on the west flank of Pu`u `O`o were inactive most of this past week. Last Sunday afternoon, the flows had advanced about one mile...

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Volcano Watch — Eruption continues without interruption

Volcano Watch — Eruption continues without interruption

The eruption at the episode 51 vents on the west flank of Pu`u `O`o continued without interruption again this week. The eruption is little changed...

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Volcano Watch — Lava flow continues; quake tremors light

Volcano Watch — Lava flow continues; quake tremors light

The eruption at the episode 51 vents on the west flank of Pu`u `O`o continued without interruption this week. A lava pond has formed just west of the...

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Volcano Watch — Lava flow continues in starts and stops

Volcano Watch — Lava flow continues in starts and stops

Last week we noted that, based on the activity in the pond inside Pu`u `O`o cone, the lull in activity at the episode 51 vent was probably just...

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Volcano Watch — Eruption pauses; earthquake shakes isle

Volcano Watch — Eruption pauses; earthquake shakes isle

The eruption at the episode 51 vent slowed dramatically on Thursday at about 2:00 p.m. and by Friday morning there was no eruptive activity at the...

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Volcano Watch — No episode 52 after all, just repeats of 51

Volcano Watch — No episode 52 after all, just repeats of 51

With the wisdom of hindsight, we have concluded that the continuing episodic eruptive activity from the vent on the west flank of the Pu`u `O`o cone...

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Volcano Watch — Episode 51 stops, 52 begins at Kīlauea Volcano

Volcano Watch — Episode 51 stops, 52 begins at Kīlauea Volcano

Episode 51 of the nine-year long eruption along Kīlauea Volcano's East Rift Zone stopped by 4:00 p.m. Thursday afternoon. As we forecast last Sunday...

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Volcano Watch — Kīlauea has busy week; new episode begins

Volcano Watch — Kīlauea has busy week; new episode begins

The nine-year long eruption along the East Rift Zone of Kīlauea Volcano took two dramatic turns this past week, but ended up nearly where it started. ...

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Volcano Watch — Newest episode likely to stop flowing in weeks

Volcano Watch — Newest episode likely to stop flowing in weeks

Episode 50 began about 7:30 p.m. on Feb. 17 from a small fissure just southwest of the Pu`u `O`o cone. By the 19th, only about 100 feet of the...

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Volcano Watch — Kupaianaha vent appears to be winding down

Volcano Watch — Kupaianaha vent appears to be winding down

Since at least April 1991, the volume of lava erupted from the Kupaianaha vent has steadily declined. Since late November, the remaining lava flows...

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Volcano Watch — Mauna Loa comes under military-style surveillance

Volcano Watch — Mauna Loa comes under military-style surveillance

The internal workings of Mauna Loa Volcano will be probed from space starting this week by a satellite system designed to track military vehicles...

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Volcano Watch — Kīlauea Volcano divided into lava-risk zones

Volcano Watch — Kīlauea Volcano divided into lava-risk zones

Kīlauea is the world's most active volcano. About 70% of Kīlauea's surface is covered by lava less than 500 years old and over 90% is covered by lava...

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