Volcano Watch

The past few weeks have been exciting for volcano watchers on the Island of Hawai‘i, especially for visitors to Hawai‘i Volcanoes National Park’s...

In recent years, scientists have made significant improvements in developing sophisticated models of how volcanoes work. The ultimate goal is to...

Three deposits from explosive eruptions at the summit of Mauna Loa are located west, northwest, and east of Moku‘āweoweo, the volcano's summit caldera...

Already reeling from a destructive earthquake and deadly tsunami and mud flow on April 2, 1868, Ka‘ū residents on the Island of Hawai‘i hoped for a...

This week marks 150 years since the largest earthquake to strike Hawaii in the last two centuries. Estimated to have been at least magnitude-7.9, this...

A recent issue of Volcano Watch [https://volcanoes.usgs.gov/hvo/hvo_volcano_watch.html?vwid=1232] looked at what the level of the lava lake within...

A little more than ten years ago, conditions around Kīlauea Volcano's summit were much different than today. The caldera floor was open to the public...

To set the stage for next week's Volcano Watch about the upcoming anniversary of Kīlauea Volcano's current summit eruption, this week we revisit the...

Most people likely know that the USGS Hawaiian Volcano Observatory (HVO) uses seismometers and Global Positioning System (GPS) receivers for...

Today's Volcano Watch begins with a question: Can you guess when the next slow slip event will happen on Kīlauea Volcano's South Flank? As a hint, the...

In recent weeks, the USGS Hawaiian Volcano Observatory (HVO) joined forces with several other agencies to talk about Mauna Loa at community events and...

If you visit Hawai‘i Volcanoes National Park's Jaggar Museum Overlook when the wind is calm, you might be able to hear the sounds of gas bubbles...

In November 2017, "Volcano Watch" entered its 27th year of publication. The long history of this column is, in large part, thanks to the U.S...

Astute visitors to the USGS Hawaiian Volcano Observatory (HVO) website may have noticed that some recent earthquakes have negative depths. This does...

With recent attention focused on the need to be prepared for all hazards, this week's Volcano Watch offers ways to stay informed about Hawaiian...

About a year ago, the lava lake within Halema‘uma‘u at Kīlauea Volcano's summit was high enough that spattering on the lake surface was commonly...

With the Wolf Moon illuminating Kīlauea Caldera from above and the Halema‘uma‘u lava lake glowing below, the USGS Hawaiian Volcano Observatory (HVO)...

On January 3, 2018, Pu‘u ‘Ō‘ō on Kīlauea Volcano's East Rift Zone reaches its 35th birthday. 

Lava erupting from the active vent on the east flank of Pu‘u ‘Ō‘ō has not entered the ocean or reached the Kamokuna lava delta during the past month...

Where do we stand today with big-picture knowledge of Kīlauea and Mauna Loa acquired in the past few decades?