Eruptive activity at the Lewotobi volcanic complex further increased over the past 10 days, prompting the Volcanology and Geological Disaster Mitigation Center (PVMBG) to raise the Alert Level to the highest (4 of 4) on January 9, 2024.
The Icelandic Meteorological Office (IMO) warns of an increased risk of eruption in the Reykjanes area, following their analysis on January 9, 2024, which reveals magma accumulation beneath Svartsengi similar to levels prior to the December 18 eruption.
The January 15, 2022, eruption of the Hunga Tonga-Hunga Ha’apai volcano produced the largest underwater explosion ever recorded, injecting an unprecedented amount of water vapor into the stratosphere, causing significant ozone loss and rapid aerosol formation, according to recent studies.
A notable increase in seismic activity associated with rock fracturing started at Colombia’s Nevado del Ruiz volcano on January 3, 2024. The alert status remains at Yellow, indicating unstable behavior and potential for quick escalation. This volcano is known for producing the deadliest lahar in history.
New activity/unrest was reported for 2 volcanoes from December 27, 2023, to January 2, 2024. During the same period, ongoing activity was reported for 23 volcanoes.
A strong eruption started at Marapi volcano, Sumatra, Indonesia at 05:19 UTC (12:19 local time) on December 22, 2023.
New activity/unrest was reported for 7 volcanoes from December 13 – 19, 2023. During the same period, ongoing activity was reported for 19 volcanoes.
The eruption site at Sundhnúksgígar, Reykjanes, Iceland, showed no active lava flow on December 21, 2023, with signs of diminishing activity and a decrease in seismic events.
A small explosion was detected at Kanaga Volcano, Alaska at 07:31 UTC on December 19, 2023.
A new volcanic fissure eruption started at 22:17 UTC on December 18, 2023, about 4 km (2.5 miles) NE of the town of Grindavik, Reykjanes, Iceland. The eruptive fissure is about 4 km long, with the northern end just east of Stóra-Skógfell and the southern end just east of Sundhnúk.
