Volcano Watch

Portulaca sclerocarpa (also known as ‘Ihi mākole) is a critically endangered small succulent plant in the purslane family (Portulacaceae). It only...

Continuing with the Volcano Awareness Month theme of people and their work at the USGS Hawaiian Volcano Observatory, we move on to another role at HVO...

When I was seven years old, I won my county's earthquake safety poster contest. I remember going to a special award luncheon with the mayor, who...

As many residents of the Island of Hawai‘i can attest, volcanic gases can stink—literally. But for those of us at the USGS Hawaiian Volcano...

Since the Hawaiian Volcano Observatory (HVO) was founded by the visionary Dr. Thomas A. Jaggar in 1912, a senior scientist has been responsible for...

The USGS Hawaiian Volcano Observatory (HVO) is responsible for monitoring active volcanoes in Hawaii, which involves assessing hazards and...

The Halema‘uma‘u crater lake at the summit of Kīlauea Volcano is on everyone's mind at the USGS Hawaiian Volcano Observatory (HVO).

Kīlauea Volcano attracts researchers from all over the world.

When you think of GPS, what typically comes to mind? Your phone, the navigation in your car or maybe your watch?

Neither Kīlauea nor Mauna Loa erupted in 2019, but this period of relative quiet must not lead to complacency about Hawaii's two most active volcanoes...

On March 30, 2018, a change occurred within the ranks of the USGS Hawaiian Volcano Observatory's (HVO's) staff when geophysicist Asta Miklius retired...

Over the last two centuries, six lava flows erupted from Mauna Loa's Northeast Rift Zone and advanced toward Hilo.

In the tradition of Hawaiian Volcano Observatory (HVO) founder Thomas Jaggar's innovative field methods, HVO recently used a cutting-edge technique to...

Information about air quality is important to Hawaii residents, particularly those living on the Island of Hawai‘i, where volcanic activity can lead...

As roads are recut into Kīlauea’s 2018 lava flow field, many have been surprised at how hot the lava remains under the surface, even though it is...

U.S. Geological Survey trucks pull off the shoulder of Mauna Loa Observatory Road before dawn. I park the Jeep at the helicopter staging area, a flat...

In late September 2019, East Hawai‘i residents with ocean views may have noticed an unusual ship—too small for a cruise ship, too big for a fishing...

The USGS Hawaiian Volcano Observatory (HVO) detects tens of thousands of earthquakes each year. Currently, one of the most active areas of seismicity...

The recently published "Geologic map of the central-southeast flank of Mauna Loa volcano" is the culmination of years of field work by the U.S...

Even though Kīlauea Volcano's lower East Rift Zone eruption has been over for about a year, steam continues to appear in new places or reappear in old...