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News about Mauna Loa.

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Volcano Watch — Kahuku: Where lava flows and cow pastures coexist

Volcano Watch — Kahuku: Where lava flows and cow pastures coexist

In 2003, almost two-thirds of the Kahuku Ranch in south Hawai‘i Island was purchased by the Nature Conservancy and Hawai‘i Volcanoes National Park...

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Volcano Watch — Mirror, mirror, on the wall, who's the hottest of them all?

Volcano Watch — Mirror, mirror, on the wall, who's the hottest of them all?

Hawai‘i is the quintessential "hotspot." The geologic definition of a "hotspot" is that region of the Earth beneath an area that has experienced high...

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Volcano Watch — Mauna Loa rumbled and stretched as it awakened from a 25-year slumber

Volcano Watch — Mauna Loa rumbled and stretched as it awakened from a 25-year slumber

Shortly before midnight on July 5, 1975, a hiker sleeping in Pu‘u‘Ula‘ula (Red Hill) Cabin on the northeast flank of Mauna Loa awoke and saw a faint...

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Volcano Watch — A Peculiar Flow from Sulphur Cone along Mauna Loa

Volcano Watch — A Peculiar Flow from Sulphur Cone along Mauna Loa

Volcano Watchers may pride themselves on having witnessed a variety of lava flows, but how many can say they've seen flowing molten sulfur? It happens...

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Volcano Watch — 1940 was a momentous year for Mauna Loa - and for Thomas A. Jaggar

Volcano Watch — 1940 was a momentous year for Mauna Loa - and for Thomas A. Jaggar

April 2010 marks the 70th anniversary of Mauna Loa's third longest summit eruption in recorded history. The 134-day-long eruption in 1940 has been...

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Photo and Video Chronology - Mauna Loa - January 25, 2010

Photo and Video Chronology - Mauna Loa - January 25, 2010

Views of Mauna Loa's Southwest and Northeast Rift Zones.
 

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Volcano Watch — How well do you know the volcanoes in your backyard?

Volcano Watch — How well do you know the volcanoes in your backyard?

We often hear the term "IQ" (intelligence quotient)—but how would you rate your "VAQ" (volcano awareness quotient)? In other words, how well do you...

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Volcano Watch — One Man's Soil Is Another Man's Ash, Especially Around Pāhala

Volcano Watch — One Man's Soil Is Another Man's Ash, Especially Around Pāhala

"Pahala Ash," named for the town of Pahala, refers to soil deposits along the southeast portion of the island of Hawai`i. Pahala Ash was described by...

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Photo and Video Chronology - Mauna Loa - July 31, 2009

Photo and Video Chronology - Mauna Loa - July 31, 2009

Aerial views of Mauna Loa and neighboring volcanoes.
 

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Volcano Watch — New Webcam Menu Makes Lava Views Safely Available

Volcano Watch — New Webcam Menu Makes Lava Views Safely Available

The HVO Web site was recently revamped to make access to our increasing number of Webcams easier for viewers and the HVO staff who post Webcam images...

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Volcano Watch — Sightseers Jam Roads and Airspace During Mauna Loa's 1949 Summit Eruption

Volcano Watch — Sightseers Jam Roads and Airspace During Mauna Loa's 1949 Summit Eruption

On the afternoon of January 6, 1949, scientists at the Hawaiian Volcano Observatory, 32 km (20 miles) from Mauna Loa's summit, couldn't see the top of...

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USGS HVO Press Release — Annual Surveys of Hawai‘i's Volcanoes Are Underway

USGS HVO Press Release — Annual Surveys of Hawai‘i's Volcanoes Are Underway

If you see someone alongside the road next to a white disk-shaped antenna atop a yellow tripod, it could be a U.S. Geological Survey Hawaiian Volcano...

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