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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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August 22, 2019

VOLCANO WATCH: Aug. 15, 2019

At present, monitoring data show no signs of impending eruption, and it could be years down the road before the next summit eruption happens.
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August 09, 2019

Scientists Now Tracking Ponds of Water, Not Lava, at Kīlauea

The recent appearance of water at the bottom of Halema‘uma‘u, a crater at the summit of Kīlauea Volcano, has attracted wide attention and generated many questions.
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October 24, 2018

SURVEY: Kīlauea Eruption Caused Nearly $28 M in Damage

Farmers, ranchers and other agricultural producers on Hawaiʻi Island said the recent eruptions of Kīlauea have caused almost $28 million in damage.
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August 06, 2018

Summit is “Quiet,” Lava Flow Greatly Diminished at Fissure 8

The lava flow from Fissure 8 in the Lower East Rift Zone of the Kīlauea volcano is greatly diminished and deflation at the summit of Halema’uma’u has slowed.
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July 05, 2018

What Causes the Collapses/Explosions at the Kīlauea Summit?

The collapse/explosion events generate plumes that have become progressively more ash-poor and now rise only a few thousand feet above the crater. This is in contrast to the eruptive sequence from May 16-26, when the vent within Halemaʻumaʻu crater was open.
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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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June 01, 2018

Volcano Discussion:  Is the Kīlauea Eruption a New Event?

Scientists at the Hawaii Volcanoes Observatory address Kīlauea’s current activity—what’s new and what’s not—starting with the two eruption sites: East Rift Zone and summit.
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May 29, 2018

Incandescent Blocks Expelled from Volcano, Land Along Crater Rim

"There were also some incandescent blocks that were thrown out of the vent and landed in Halemaʻumaʻu and just along the edge of the crater rim," said HVO Volcanologist Wendy Stovall.
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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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May 15, 2018

Another Burst in Volcanic Ash Prompts Ashfall Advisory

Another burst in volcanic ash emissions from the Haleamaʻumaʻu Crater on Hawaiʻi Island was recorded at 7 a.m. on Tuesday, May 15, 2018, prompting a special weather statement advising area residents of light ashfall and hazardous air quality.
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May 14, 2018

Burst in Volcanic Emissions Prompts Special Weather Statement

Very light ashfall is expected through at least 6 p.m. on Monday, May 14, 2018 following a burst in volcanic emissions at around 9 o'clock this morning.
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