Hawai'i Volcano Blog

Volcano Watch: Fostering prepared youths on the natural hazards of backyard volcanoes

One noteworthy collaboration is with the University of Hawaiʻi at Hilo and the Center for the Study of Active Volcanoes.

Moderate levels of seismicity continue at Kīlauea summit

The Big Island volcano is not erupting; however, unrest associated with an intrusion of magma began in early October and has waxed and waned since

Volcano Watch: What’s shaking beneath Mauna Loa?

It’s hard to believe that nearly one year has passed since Mauna Loa last erupted. But a small increase in seismic activity in late October 2023 reminds us that the Big Island volcano remains active.

Volcano Watch – Not just polka dots: the hidden dance of processing GPS data

Scientists have come to depend on daily GPS positions to monitor changes in the shape of volcanoes and understand magma storage and movement underground.

Kīlauea volcano not erupting despite unrest

The summit of Kīlauea remains at a high level of inflation and eruptive activity is possible in the coming weeks or months.

Volcano Watch: Unrest continues at Kīlauea Summit

A series of earthquake swarms began suddenly at Kīlauea’s summit on October 4, 2023.

HVO: Unclear if unrest at Big Island’s Kīlauea volcano will continue as activity diminishes again

While there is no sign of an imminent eruption, increased inflation and earthquake activity are expected to precede eruptive activity.

Noted geophysicist, former scientist-in-charge at Hawaiian Volcano Observatory Jim Kauahikaua dies

Known for his iconic beard and ponytail and affectionately called Dr. Jim by many, Kauahikaua joined the Big Island volcano observatory’s staff in 1988. He became scientist-in-charge, the first Native Hawaiian to serve in the position, in 2004 and served 10 years in the post until he stepped down in March 2015 and rotated back to his former position.

Earthquakes beneath southern part of Kīlauea caldera ramp back up

According to Hawaiian Volcano Observatory, an increase in earthquakes, from 23 per day on Monday, to 136 were recorded in the past 24 hours.

Earthquakes beneath Kīlauea summit dramatically decrease

According to Hawaiian Volcano Observatory, there has been a dramatic drop in earthquakes, from a peak of over 250 per day last week, to only 23 recorded in the past 24 hours.

Activity at Kīlauea summit decreases dramatically, suggesting recent intrusive event coming to an end

There’s been a dramatic decrease in earthquakes and summit tiltmeters also recorded a change in tilt magnitude and direction during the past several days.

Activity seems to have leveled off as episodes of unrest in Kīlauea’s south summit region continue

The Uēkahuna summit tiltmeter north of the Big Island volcano’s caldera recorded a flat trend during the past 24 hours, with the Sand Hill tiltmeter just south of the caldera displaying the same.

Volcano Watch: The Great Hawaiʻi ShakeOut and the earthquake energy budget

The Great Hawaiʻi ShakeOut is an annual event for kamaʻāina and visitors alike to practice and prepare for when a large damaging earthquake hits the Hawaiian Islands.

Unrest continues in south summit area of Kīlauea

According to the Hawaiian Volcano Observatory, an eruption of the Big Island volcano in the region from Halemaʻumaʻu crater south to the December 1974 vents could emerge with little notice.

More than 130 earthquakes recorded in past 24 hours as unrest continues at Kīlauea summit

Inflation at the summit of the Big Island volcano also remains at about its highest level in more than 5 years, returning to nearly the level seen just before the last eruption Sept. 10, which lasted less than a week.

Unrest in the south summit area of Kīlauea could lead to an eruption

According to Hawaiian Volcano Observatory, this episodic heightened unrest could lead to an eruption from the December 1974 vents during peaks in this current activity. The vents, located on the south end of the caldera and extending to the southwest, could emerge with as little notice as one to two hours.

125 earthquakes recorded south of Kīlauea summit in the past 24 hours

Elevated seismicity beneath Kīlauea summit region began Oct. 4 18 days after an eruption, which lasted only six days.

Signs of unrest in summit area of Big Island’s Kīlauea volcano continue, but ground deformation has leveled off

Seismicity beneath the summit region, which began Oct. 4, also decreased with the change in deformation early Saturday morning and remained low as of about 9 a.m. Saturday.

Hundreds of earthquakes reported near Kīlauea summit region in the last 24 hours

Hawaiian Volcano Observatory reported signs of elevated unrest beneath the summit region Wednesday. No unusual activity has been noted along Kīlauea’s East Rift Zone or Southwest Rift Zone.

Volcano Watch: Hawaii’s volcanoes are quiet and it’s a bit spooky

Kīlauea’s most recent eruption stopped on Sept. 16. This was the briefest of the five eruptions that have occurred at the summit of Kīlauea since 2020.  The eruption lasted about six days and, like the four eruptions before it, filled in a portion of the summit that collapsed in 2018.
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