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Date published: February 25, 2021

Volcano Watch — When will Mauna Loa erupt next?

“When will Mauna Loa erupt next?” This was the title of a Volcano Awareness Month video presentation released by the USGS Hawaiian Volcano Observatory (HVO) in January 2021. This was also the topic of discussion among HVO scientists last...

Date published: January 28, 2021

Volcano Awareness Month 2021 Program – When will Mauna Loa erupt next?

In this talk, USGS Hawaiian Volcano Observatory geologist Frank Trusdell, who has studied Mauna Loa for two decades, presents a roughly 40-minute talk about Earth’s largest volcano: Mauna Loa.

Date published: January 26, 2021

Volcano Awareness Month 2021 Program

The USGS Hawaiian Volcano Observatory (HVO) is announcing a revised Volcano Awareness Month schedule of recorded programs.  Programs, which are typically offered throughout the month of January, were temporarily postponed due to the eruption that began in Halema‘uma‘u at Kīlauea’s summit within Hawai‘i Volcanoes National Park on December 20, 2020. 

Date published: December 10, 2020

Volcano Watch — Recent activity reminds us to maintain our volcano awareness

Though there hasn’t been an eruption in Hawai‘i in 2020, the year has hardly been quiet—earthquake swarms, an elevated alert-level on Mauna Loa, and a growing water lake on Kīlauea are reminders that island residents should be aware of Hawaiʻi’s active volcanoes.  

Date published: December 4, 2020

USGS HVO Press Release—Magnitude-4.1 earthquake beneath Mauna Loa’s northwest flank, Island of Hawai‘i

Magnitude-4.1 earthquake on Mauna Loa’s northwest flank, Island of Hawai‘i

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.1 earthquake located beneath Mauna Loa's northwest flank on Friday, December 4, at 7:44 a.m., HST. 

Date published: December 2, 2020

Photo and Video Chronology – Mauna Loa – December 1, 2020

Moon over Mauna Loa's Northeast Rift Zone

Date published: October 22, 2020

Volcano Watch — Charcoal, a game changer for understanding processes in young volcanic terraines

One of the fundamental premises of geology is that the "key to understanding the future is to understand the past."  In order to forecast how a volcano will behave, geologists must map the deposits from past eruptions and determine the ages of those deposits. Radiocarbon dating is our principal tool of use.

Date published: September 17, 2020

Volcano Watch — HVO camera network reconfiguration and upgrades coming soon!

Over the past two decades, the USGS Hawaiian Volcano Observatory (HVO) has set up a camera network system to monitor visual changes at Kīlauea and Mauna Loa volcanoes. This network was designed for the volcanic activity of the time and captured the two long-lived eruptions of Kīlauea at the summit and East Rift Zone up close.

Date published: September 8, 2020

New USGS Data Release - Campaign GPS measurements on the Island of Hawai‘i collected by the Hawaiian Volcano Observatory in 2019

The USGS has recently published a "Campaign GPS measurements on the Island of Hawai‘i collected by the Hawaiian Volcano Observatory in 2019." This data release includes all 2019 campaign survey GPS sites on Kīlauea and Mauna Loa on the Island of Hawai‘i; it also includes semi-permanent stations in Kīlauea's Middle...

Date published: June 8, 2020

Updates to HVO's Kīlauea and Mauna Loa "Geology & History" Webpages

HVO has updated the Geology & History webpages for Kīlauea and Mauna Loa volcanoes. These pages now include maps and links to revised tables summarizing volcanic activity over the past ~200 years at each volcano.

You can also access the...