Volcano Updates | U.S. Geological Survey - USGS.gov
Volcano observatories issue updates and other types of notifications as activity warrants.
www.usgs.govHere are the latest widely reported active volcanic events as of early May 2026:
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Great Sitkin (Alaska, USA): Ongoing lava effusion in the summit crater with slow lava flows and weak steam; current alert status is Watch/Orange with no significant explosions since May 2021. This monitoring is supported by USGS-AVO and Volcanic Activity updates.[1][4]
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Fuego (Guatemala): Continuing eruption noted in late 2025 with ongoing explosive activity; INSIVUMEH reported eruptions through late 2025, and continued monitoring is routine for this volcano.[2][4]
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Barren Island (Andaman Sea, India): Mild, intermittent activity observed in September 2025 with small eruptions; scientists linked activity to regional seismicity and ongoing surveillance continues.[3][6]
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Atka/ Alaska region: Occasional updates in 2026 reflect heightened unrest and aviation notices when ash clouds or activity rise; status varies with seismic and gas emissions signals.[4][1]
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Global context: The Smithsonian/USGS Weekly Volcanic Activity Report (WVAR) tracks ongoing eruptions and summarizes weekly activity across many volcanoes; as of early 2026, roughly two dozen volcanoes were actively erupting at any given time, with periodic updates and VONA notices when conditions change.[9][4]
Illustrative example of how to interpret updates:
- If a volcano shows lava effusion and persistent steam at the summit, authorities often keep it at a high-alert status (e.g., Orange/Watch) with regular aviation advisories (VONA) and seismic monitoring in place.[1][4]
If you want, I can pull the very latest weekly summaries for specific volcanoes (e.g., Great Sitkin, Fuego, Barren Island) and present a concise, date-stamped briefing with bullet points and sources. I can also tailor updates to a particular region near São Paulo or another area you’re monitoring.
Citations:
- USGS/AVO Great Sitkin updates and status[1]
- Volcano Discovery and INSIVUMEH reports on Fuego activity in 2025-2026 context[2]
- NDTV/AP-style coverage of Barren Island activity and monitoring context[3]
- Smithsonian/USGS Weekly Volcanic Activity Report overview[4]
- Additional global eruption summaries and aviation notices context[9]