This photo was taken by a Hawaiian Volcano Observatory monitoring webcam just before 6 a.m. July 9, 2025, during Episode 28 ...

Closing Mauna Loa and three other U.S. sites that track greenhouse gases would disrupt a decades-long record of the planet’s ...

More than half of the world’s critical mineral resources formed in ancient volcanic systems. When exploring for mineral ...

Around 10:20 p.m. on Nov. 27, 2022, the USGS Hawaiian Volcano Observatory monitoring networks detected rapid changes in Mauna Loa’s summit area. A swarm of small, shallow earthquakes occurred ...

Please visit HVO’s website for past Volcano Watch articles, Kilauea and Mauna Loa updates, volcano photos, maps, recent earthquake information, and more. Email questions to askHVO@usgs.gov.

The park is home to two of the world’s most active volcano summits: Kilauea and Mauna Loa. Here's what you need to know if you are planning on travelling to or from the affected area.

Hawaii Volcanoes National Park encompasses the summits of two of the world’s most active volcanoes: Kilauea and Mauna Loa. Kilauea also erupted in June and September 2024.

Kilauea is one of six active volcanoes in Hawaii, including one that is submerged underwater. The largest is Mauna Loa, which is also on the Big Island and which erupted in 2022. The Associated Press.

Hawaiian snow is more common than most people realize, and both Mauna Loa and Mauna Kea often receive at least a light dusting every year. However, 2021 was an extreme case.