Volcano Watch

Since May 3, 2018, Kīlauea Volcano's lower East Rift Zone eruption has destroyed more than 700 structures, covered more than 32 sq km (12.4 sq mi) of...

For many Hawaii residents, interactions with Kīlauea Volcano's eruptions is through vog—a hazy mixture of sulfur dioxide gas and sulfate particles...

We are currently witnessing extraordinary events at the summit of Kīlauea Volcano. For weeks the summit has subsided both in a continuous fashion and...

At the summit of Kīlauea Volcano, Halema‘uma‘u has changed dramatically since early May 2018. As the crater walls and inner caldera slump inward, the...

For more than six months, earthquakes at Mauna Loa have diminished and deformation has slowed, indicating that the volcano is no longer at an elevated...

When volcanic gases are released into the atmosphere, resulting plumes sometimes appear to have a faint color. Is this color indicative of a certain...

Small explosions that produce ashfall from Kīlauea Volcano's summit are not new. However, the mechanism, vigor, plume heights, and extent of ash...

With the current activity at the volcano's lower East Rift Zone and summit, it's an understatement to say that Kīlauea has been making worldwide...

Numerous hazards are associated with active lava flows, and USGS Hawaiian Volcano Observatory scientists have written about many of them in past...

False rumors about the ongoing volcanic activity at the summit and lower East Rift Zone of Kīlauea Volcano are causing unnecessary anxiety and...

Last week's Volcano Watch focused on the East Rift Zone eruption, which continues to impact the lower Puna District on the Island of Hawai‘i. Changes...

The USGS Hawaiian Volcano Observatory was unable to issue "Volcano Watch" by its regular Thursday deadline on May 3 due to unfolding events on Kīlauea...

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...