News

On August 12, USGS-Hawaiian Volcano Observatory field engineers visited monitoring sites on Mauna Loa volcano to upgrade and install new monitoring...

HVO staff are conducting the annual Mauna Loa GPS campaign and the ongoing Kīlauea summit eruption that began on December 23, 2024, is currently...

As people from around the world are captivated by episodic lava fountaining during the ongoing Kīlauea eruption in Halemaʻumaʻu, let’s use the current...

When magma moves into the rift zone of a Hawaiian volcano, there is understandably a lot of excitement and apprehension.  How far will the magma go...

Mauna Loa summit webcams have been down for several months due to wind damage at the radio telemetry site. On November 7, 2024, HVO staff visited the...

Geologic mapping has been one of the most fundamental mandates of the U.S. Geological Survey (USGS) since its establishment in 1879. Congress created...

In this third edition of "Eruptions of Hawaiian Volcanoes—Past, Present, and Future," we include information about Kīlauea’s 2018 eruption in the...

The 2022 eruption of Mauna Loa volcano, Island of Hawaiʻi, was the first eruption on the volcano since 1984, producing a 17 km lava flow that...

Photography has been a crucial part of volcano monitoring in Hawaii going back to the start of the USGS Hawaiian Volcano Observatory (HVO). In 1911...

In the late evening of November 27, 2022, an effusive eruption began inside Moku'aweoweo caldera at the summit of Mauna Loa volcano. The eruption, the...