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TAG: Mauna Loa
October 05, 2020

Volcano Watch — That Didn’t Feel Like a Magnitude-4? What do Earthquake Measurements Mean?

This is why the MMI scale is the best way to communicate the relative effects among earthquakes. Values are derived from direct observations of the public and will give the best sense of shaking experienced in different regions.
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August 16, 2020

HVO: Water Was in Kīlauea Caldera Before the 2018 Summit Collapse

Kīlauea monitoring data for the past month show variable but typical rates of seismicity and ground deformation, low rates of sulfur dioxide emissions, and only minor geologic changes since the end of eruptive activity in September 2018.
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March 07, 2020

USGS: Old Bombs Found on Mauna Loa

Two bombs were part of a cluster dropped by U.S. Army Air Corp planes on the Humuʻula lava flow on Dec. 27, 1935.
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January 01, 2020

$45K Donation Supports Recovery of Hawaiʻi Island Forests

A $45,000 donation from the Max and Yetta Karasik Family Foundation is supporting the ongoing recovery of nature preserves in Kona Hema and Kaʻū on Hawaiʻi Island. 
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December 28, 2019

Danish Scientist Joins Hawaiian Volcano Observatory

Dr. Johanne (Jo) Schmith joined the ranks of the US Geological Survey’s Hawaiian Volcano Observatory (HVO) in June to study some deposits of past Kīlauea explosions—a timely endeavor given the presence of water in the caldera today.
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December 13, 2019

Scientists: Volcano Alert Level at Normal

"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. Both will eventually erupt again."
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October 26, 2019

Volcano Update: Oct. 24, 2019

Volcano Watch is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory scientists and affiliates. This article is by HVO technician Frank Younger.
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October 10, 2019

Why do so many deep earthquakes happen around Pāhala?

Currently, one of the most active areas of seismicity is Kīlauea’s lower Southwest Rift Zone. This area produces numerous deep earthquakes, mostly at depths of 25-40 km (15-25 miles), beneath the town of Pāhala
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July 30, 2019

Mauna Loa’s 1935 Flow Seen in Current Media Coverage of Maunakea

In ongoing media coverage of demonstrations at the base of Maunakea, many hundreds of people can be seen standing on a black lava flow that surrounds Puʻuhuluhulu.
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June 11, 2019

68-Year-Old Arizona Man Rescued at Mauna Kea Summit

A 68-year-old Arizona man located at the summit of Mauna Kea had injured his leg while trying to find his way back to the observatories and needed assistance.
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March 23, 2019

VOLCANO WATCH – 22 March 2019

VOLCANO WATCH – 22 March 2019 This article is from Volcano Watch, a weekly article and activity update written by US Geological Survey Hawaiian Volcano Observatory scientists and affiliates. Did groundwater trigger explosive eruptions at Kīlauea? In February 1924, the surface of the lava lake at Halema‘uma‘u dropped rapidly and disappeared from view.  Throughout March and... Read more »
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June 14, 2018

Explosive Eruptions Continue at Kīlauea, 5.4 Quake Overnight

Since the onset of the recent eruptive activity in May, there have been dozens of seismic events that have prompted statements from the Pacific Tsunami Warning Center.
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June 04, 2018

Hawai‘i Volcanoes National Park Approaches Fourth Week of Closure

On Sunday, June 3, a magnitude 5.5 earthquake rattled the summit area at 3:50 p.m., cracking the overlook deck at Jaggar Museum. Over the weekend, the US Geological Survey Hawaiian Volcano Observatory reported more than 500 earthquakes in a 24-hour period – the most ever measured by HVO scientists.
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May 24, 2018

Methane Rises From Volcano Cracks Creating Blue Flames

Authorities say methane gas can seep into subsurface voids and explode when heated, or as shown in this video, emerge from cracks in the ground several feet away from the lava.
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May 17, 2018

Larger Steam Driven Explosions Possible at Kīlauea Volcano

Authorities reflected upon the eruptive activity in 1924, saying it involved a series of explosions. Scientists say they are in it for the long haul.
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