Hawaii Volcano Blog

Friday, June 11, 2021

Campaign season is here! Another Way HVO Tracks Changes on Hawaiian Volcanoes

These yearly campaign surveys help supplement the continuously recording GPS receivers that blanket the Island of Hawai‘i.
Friday, June 04, 2021

Volcano Watch: What Defines an Eruption Pause?

Kīlauea’s recent volcano alert-level change, from Watch to Advisory, has attracted some attention.
Friday, May 28, 2021

VOLCANO WATCH: Pau or Paused? What’s the Difference?

The Halemaʻumaʻu lava lake celebrated its five-month anniversary by doing what we all like to do on our special day, taking a break.
Sunday, May 23, 2021

Earthquake Rumbles Under Kīlauea’s South Flank

An earthquake struck beneath the south flank of Kīlauea on Sunday, May 23.
Thursday, May 20, 2021

VOLCANO WATCH: New Research Sheds Light on Recent Pāhala Earthquake Swarms

Many people in Kaʻū have noticed the swarm of earthquakes taking place during the past few years.
Friday, May 14, 2021

How Are Lava Levels, Volumes Measured at Kīlauea Summit Lava Lake?

Kīlauea’s summit lava lake in Halemaʻumaʻu is approaching its five-month anniversary on Thursday, May 20, while the water lake that occupied the crater for the previous seventeen months seems like a distant memory.
Tuesday, May 11, 2021

Volcanoes National Park to Reopen Two Trails Thursday

The Kahuku Visitor Contact Station (VSC) will also reopen Thursday to visitors who recreate responsibly and follow COVID safety guidelines.
Friday, May 07, 2021

Tiny Changes at Mauna Loa Summit Holds Big Clues

Although Mauna Loa is Earth’s largest active volcano, it has lived in the shadow of Kīlauea since it last erupted in 1984.
Thursday, May 06, 2021

A Look Back: 3 Years Since Kīlauea Eruption Changed Hawai`i Forever

The Puʻu ʻŌʻō collapse marked what scientists at the USGS have since determined was the end of a 35-year eruption that began in 1983.
Friday, April 30, 2021

Volcano Watch: The Rise and Fall of Lava Lakes

May 3 marks three years since the start of the devastating lower East Rift Zone eruption of Kīlauea.
Saturday, April 24, 2021

Volcano Watch: How Measuring Gravity on Maunakea Helps Monitor Mauna Loa

The opportunity to calibrate HVO gravimeters on Mauna Kea provides the ability to design a gravity monitoring program to help understand volcanic unrest at Mauna Loa.
Friday, April 16, 2021

Volcano Watch: Young Activity in Kīlauea’s Southwest Rift Zone

It is no secret that the Island of Hawaiʻi is home to fantastic volcanic features, many of which have been created during eruptions of Kīlauea, Mauna Loa, and Hualalai since 1800.
Friday, April 09, 2021

What’s That (Seismic) Noise?

The USGS Hawaiian Volcano Observatory (HVO) uses dozens of seismometers to locate individual earthquakes and identify signals that are related to faulting and magma movement within our volcanoes.
Saturday, April 03, 2021

Back-to-Back Quakes Shake Same Spot Under Mauna Loa Saturday

The USGS “Did you feel it?” service received over 130 felt reports within the first hour of the earthquake, including one report from Kaua‘i.
Thursday, April 01, 2021

Volcano Watch: The Lava Lakes of Kīlauea Then and Now

One of the most interesting aspects of the current activity in Halemaʻumaʻu is the occasional oozing of lava around the edges of the entire crater while the lava surface is rising.
Saturday, March 20, 2021

Volcano Watch: Using the ocean to track volcanic activity at Kīlauea

As these swells rise and fall, they couple with the ocean floor below them creating a constant signal.
Monday, March 15, 2021

VOLCANO WATCH: If Mauna Loa Erupted, Would You Be Ready?

How can you prepare for a Mauna Loa eruption? The most important thing you can do is to have a personal response plan — especially if you live in or near the magenta zone.
Thursday, March 04, 2021

VOLCANO WATCH: Seismicity preceding the 2020 eruption of Kīlauea Volcano

HVO scientists continue to keep a close eye on Kīlauea and the other volcanoes around the island, always analyzing and interpreting data for any hint of activity that may precede the next eruption, wherever it may be.
Friday, February 26, 2021

Volcano Watch: When Will Mauna Loa Erupt Next?

Mauna Loa is not currently erupting. But there have been signs of elevated unrest above known background activity since July 2019.
Thursday, February 18, 2021

VOLCANO WATCH: What’s going on at Kīlauea’s Summit Lava Lake?

The rise of the lava lake has been interrupted by several plateaus, and even drops, in level over the past few weeks.
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