Skip to main content
U.S. flag

An official website of the United States government

Volcano Watch

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

Filter Total Items: 1765
Volcano Watch — Santa is not the only eye in the sky on Christmas

Volcano Watch — Santa is not the only eye in the sky on Christmas

As the winter holidays unfold around us, many keiki (children) dream of Santa and his reindeer traveling the skies on Christmas Eve.

Read Article
Volcano Watch — Kīlauea's latest activity rates special session at international meeting

Volcano Watch — Kīlauea's latest activity rates special session at international meeting

Last weekend, seven staff members of the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) fled the stormy weather of the Big Island for the...

Read Article
Volcano Watch — Can Hawaiian lava flows be diverted?

Volcano Watch — Can Hawaiian lava flows be diverted?

Whenever lava flows threaten communities, a commonly asked question is "Can lava flows be diverted if populated areas are threatened?" Answers have...

Read Article
Volcano Watch — Widespread Secondary Volcanism around Kaua`i

Volcano Watch — Widespread Secondary Volcanism around Kaua`i

The University of Hawai`i (UH) research ship Kilo Moana returned recently from a four-week expedition mapping and sampling the sea floor around the...

Read Article
Volcano Watch — Eruption rate for July-August lava flows was high but may have diminished toward the previous long-term rate

Volcano Watch — Eruption rate for July-August lava flows was high but may have diminished toward the previous long-term rate

The ongoing eruption of Kīlauea has spewed forth nearly 58 million cubic meters (76 million cubic yards) of lava in the days between July 21 and...

Read Article
Volcano Watch — New geologist is a timely addition to HVO staff

Volcano Watch — New geologist is a timely addition to HVO staff

Alert readers of this column will know that the Hawaiian Volcano Observatory (HVO) has seen the addition of several new employees this year.

Read Article
Volcano Watch — Perched lava channel elevates the flows

Volcano Watch — Perched lava channel elevates the flows

Despite the potential hazards, the ongoing eruption from Kīlauea's east rift zone is a remarkable and fascinating sight.

Read Article
Volcano Watch — Changes in lava flows intensify questions to scientists

Volcano Watch — Changes in lava flows intensify questions to scientists

As soon as lava began flowing on the north side of Kīlauea's east rift zone from a new vent on July 21, questions arose among residents of the Puna...

Read Article
Volcano Watch — OK, you felt it, but did it move you?

Volcano Watch — OK, you felt it, but did it move you?

Every week Hawai`i residents feel earthquakes. Some weeks the U.S. Geological Survey's Hawaiian Volcano Observatory receives only a few reports, but...

Read Article
Volcano Watch — Glaciers on Mauna Kea? You crazy? In the middle of the Pacific? YES!

Volcano Watch — Glaciers on Mauna Kea? You crazy? In the middle of the Pacific? YES!

Mauna Kea, a dormant volcano in the post-shield stage, last erupted about 4,500 years ago. Its oldest exposed lavas are about 250,000 years old.

Read Article
Volcano Watch — At Kīlauea, it's always "Time to make the doughnuts"

Volcano Watch — At Kīlauea, it's always "Time to make the doughnuts"

Some years ago, a series of commercials for a popular doughnut shop was aired on television. In the scene, Fred the baker would leave his house early...

Read Article
Volcano Watch — How much lava is being erupted at the July 21 fissure?

Volcano Watch — How much lava is being erupted at the July 21 fissure?

This has been a popular question posed by scientist and citizen alike but is currently a difficult one to answer accurately. It is also one of the...

Read Article
Volcano Watch — Progress in the year following the Kiholo Bay earthquake

Volcano Watch — Progress in the year following the Kiholo Bay earthquake

This coming October 15 will mark one year since last October's damaging earthquakes that rocked Hawai`i County. To briefly recall them, at 7:07 AM on...

Read Article
Volcano Watch — Earthquakes can give you that sinking feeling

Volcano Watch — Earthquakes can give you that sinking feeling

Most of us who were in the islands on October 15, 2006, are familiar with ground motion associated with earthquakes. On that day, two quakes, both...

Read Article
Volcano Watch — Kīlauea's eruption building perched lava channel and feeding many short flows

Volcano Watch — Kīlauea's eruption building perched lava channel and feeding many short flows

Lava flows from the ongoing eruption of Kīlauea Volcano have traveled only short distances during the past week from the impressive open lava channel...

Read Article
Volcano Watch — Almost nothing is enough: reticulite helps measure depth of Kīlauea's caldera 500 years ago

Volcano Watch — Almost nothing is enough: reticulite helps measure depth of Kīlauea's caldera 500 years ago

Pumice is glassy volcanic ejecta so full of bubbles that it floats in water. Reticulite is an extreme form of pumice in which all bubbles have burst...

Read Article
Volcano Watch — New report details July 21 fissure eruption hazards

Volcano Watch — New report details July 21 fissure eruption hazards

For the past six weeks, lava erupting from a fissure east of Pu`u `O`o has been flowing on the surface through an open channel and feeding a series of...

Read Article
Volcano Watch — Oldest radiometric ages from Kīlauea about 275,000 years

Volcano Watch — Oldest radiometric ages from Kīlauea about 275,000 years

On an active volcano like Kīlauea, it's easy to point to the youngest volcanic features. Although the specific lava flow or vent may change daily, its...

Read Article
Volcano Watch — Kīlauea's south flank earthquakes more common than hurricanes

Volcano Watch — Kīlauea's south flank earthquakes more common than hurricanes

Early Wednesday morning, as most island residents slept peacefully in the knowledge that we were to be spared by hurricane Flossie, some of us were...

Read Article
Volcano Watch — What does it take to become a volcanologist?

Volcano Watch — What does it take to become a volcanologist?

Staff members at the U.S. Geological Survey's volcano observatories frequently receive requests for career guidance from aspiring volcanologists...

Read Article
Volcano Watch — Kīlauea's newest fissure eruption forming perched lava ponds

Volcano Watch — Kīlauea's newest fissure eruption forming perched lava ponds

If you've been keeping up with the on-line eruption updates from the Hawaiian Volcano Observatory, then you know that there's something peculiar that...

Read Article
Was this page helpful?