Smithsonian / USGS Weekly Volcanic Activity Report
The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program.
volcano.si.eduHere are the latest volcano news highlights from reliable sources as of early May 2026.
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USGS/Volcano Observatories updates
- Great Sitkin Volcano near Alaska remains at Orange/Watch with slow lava effusion inside the summit crater and ongoing weak steaming; seismic events include rockfalls from the growing lava dome. The alert status can change with new data, and monitoring uses seismic, infrasound, satellite, and webcam data. [sources: USGS Volcano Updates page; ongoing alerts and observatory notes]
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Global updates and notable unrest
- Shishaldin Volcano in Alaska has persistently elevated seismic and infrasonic activity with a steam plume observed from webcams and sulfur dioxide signals in satellite data, indicating continued unrest though not necessarily an eruption onset.
- Other active volcanoes are being monitored worldwide with regular bulletins and VAAC advisories when ash plumes are detected. Update cadence typically includes daily or near-daily summaries from regional observatories and international networks.
What this means for you in Los Angeles / Southern California
- Direct volcanic hazards from Alaska or other distant volcanoes are unlikely to impact daily life in Southern California, but ash clouds can travel long distances under certain atmospheric conditions. For up-to-date advisories, you can monitor local emergency management channels and national agencies that issue airborne ash notices when needed. [general hazard context; no specific citation needed for this advisory-style guidance]
Ways to stay informed
- USGS Volcano Updates: provides current alert levels, color codes, and brief summaries for major volcanoes, including Great Sitkin and Shishaldin, with links to webcams and seismic data.
- Regional and international volcano news aggregators and observatories offer weekly or daily summaries and eruption notices, which can be useful if you’re tracking multiple volcanoes or planning travel.
If you’d like, I can fetch the very latest bulletins for a specific volcano (e.g., Great Sitkin, Shishaldin, or another you care about) and summarize them with dates, alert levels, and notable observations. I can also set up a brief daily digest for you.