The Weekly Volcanic Activity Report: July 17 – 23, 2024
New activity/unrest was reported for 8 volcanoes from July 17 to 23, 2024. During the same period, ongoing activity was reported for 15 volcanoes.
Analysis of the July 23, 2024, hydrothermal explosion in Biscuit Basin, Yellowstone National Park
A hydrothermal explosion occurred in Biscuit Basin, Yellowstone National Park at approximately 16:00 UTC on July 23, 2024.
High-level eruption at Bezymianny volcano, Russia
A strong explosive eruption began at Bezymianny volcano, Kamchatka, Russia, at 15:10 UTC on July 24, 2024, ejecting ash up to 12 km (40 000 feet) above sea level.
Hydrothermal explosion in Yellowstone’s Biscuit Basin thermal area damages nearby boardwalk
A small hydrothermal explosion occurred in Yellowstone National Park in the Biscuit Basin thermal area at around 16:19 UTC (10:19 MST) on July 23, 2024.
Alert Level for Kilauea volcano raised to Watch, Hawaii
Increased earthquake activity and ground deformation at Kīlauea’s upper East Rift Zone began at approximately 13:30 UTC (03:30 HST) on July 23, 2024, indicating likely magma movement in the subsurface. This activity has prompted Hawaiʻi Volcanoes National Park to close areas that could put visitors and staff at risk if the volcano erupts.
Strong ash emissions, new lava fountaining episode at Etna volcano, Italy
Strong Strombolian activity that started at Etna’s Voragine crater at 15:45 UTC on July 22, 2024, increased around 01:00 UTC on July 23 and evolved into a new lava fountaining episode at 02:59 UTC.
Iwo-Jima volcano enters new eruptive period, Japan
Satellite images taken on July 19, 2024, suggest Japan’s Iwo-Jima volcano, also known as Ioto and Ogasawara-Iojima, has entered a new eruptive period.
Strong eruption, large pyroclastic flow at Mount Merapi, Indonesia
A total of 19 lava flows were detected on Mount Merapi, Indonesia on July 20, 2024. The maximum glide distance of the lava flows was 1.7 km (1 mile), accompanied by pyroclastic flows with a sliding distance of 1.2 km (3 900 feet).
Strong explosive eruption at Sakurajima volcano, Japan
A strong explosive eruption was registered at Sakurajima volcano, Japan at 04:58 UTC on July 20, 2024.
Heightened activity at Ijen volcano, Alert Level raised to 2, Indonesia
Increased seismic activity was recorded at the Ijen volcano in Indonesia between January 1 and July 12, 2024. On July 12, a significant energy increase was observed along with a rise in continuous tremor amplitude, prompting authorities to increase the Alert Level from 1 to 2.
