#Big Island Volcanoes

Volcano Watch: Halemaʻumaʻu eruption reaches new heights as HVO updates Volcano Alert Notifications

Record-setting lava fountain and plume heights were reached during Episode 23 of the Kīlauea summit caldera eruption. Given increasing airborne hazards associated with each new eruptive episode, Hawaiian Volcano Observatory is changing its episode notification types.

Lava fountains reach 1,000 feet during Episode 23 of ongoing Kīlauea eruption

Lava fountains reach more than 1,000 feet, volcanic plume soars at least 5,000 feet before most recent phase of eruptive activity — that teased for several days — abruptly ends after just 6 hours and 10 minutes Sunday night.

Volcano Watch: 20 episodes and counting — lava fountains continue in Kaluapele

Hawaiian Volcano Observatory remains steadfast and vigilant as lava fountaining episodes continue at the summit of the Big Island’s Kīlauea volcano, maintaining its monitoring and livestreaming of the volcano to document the eruption’s evolution, inform hazard assessments and apprise the public of ongoing volcanic activity.

Volcano Watch: Kīlauea’s continuing summit eruption

Kīlauea summit has shown little net change in pressurization since the eruption began Dec. 23, 2024, indicating the summit has been in some level of equilibrium. As long as that equilibrium is maintained, the episodic eruption at the summit is likely to continue.

Volcano Watch: What sounds the (automated) alarms at HVO?

While old-fashioned eyes and a notebook are used when field teams are near a volcano, modern volcano observatories also use rapidly collected data and computers to support monitoring. Hawaiian Volcano Observatory computers are ‘trained’ to look for activity and send alerts when a volcano is changing or becoming active.

Volcano Watch: Deciphering explosive behavior at Mauna Loa

Mauna Loa is known for its effusive eruptions that produce spectacular lava flows. However, some of the volcanic products found on Mauna Loa are pyroclastic or explosive in character. 

50th Anniversary of Kīlauea’s Mauna Ulu Eruption

May 24, 2019, is a notable date in Kīlauea Volcano’s history. It was also the one-year anniversary of several key events in the 2018 Kīlauea eruption.