Global Volcanic Unrest: A Snapshot of Current Activity

As of March 26, 2026, volcanic activity continues across the globe, with ongoing eruptions and heightened unrest at numerous sites. Monitoring agencies are closely watching several volcanoes, issuing alerts and providing updates to local populations and aviation authorities.

Japan: Kusatsu-Shirane and Sakurajima Under Watch

In Japan, the Japan Meteorological Agency (JMA) reports continued unrest at Kusatsu-Shiranesan. The alert level remains at “Level 2 – Restriction on proximity to the crater,” indicating a need for caution near the Yugama crater. Sakurajima also continues to erupt, maintaining a “Level 3 – Restriction on proximity to the volcano” alert.

Philippines: Multiple Volcanoes Displaying Activity

The Philippines are experiencing significant volcanic activity, with several volcanoes exhibiting ongoing eruptions or increased unrest. Canlaon volcano is at alert level 2, with moderate unrest. Taal volcano remains at a “Low-Level Unrest” alert (Level 1), while Mayon is at “Increased Tendency Towards Hazardous Eruption” (Level 3). Bulusan is also experiencing continued unrest at alert level 1. Recent activity at Mayon includes lava effusion and rockfalls, with lava flows extending several kilometers down the volcano’s flanks.

Indonesia: Ongoing Eruptions and Alerts

Indonesia, situated within the Pacific Ring of Fire, is experiencing activity at multiple volcanoes. Karangetang and Lewotobi are both at “Level 2 – Alert,” while Ibu continues to exhibit explosive activity, with ash plumes reaching altitudes of 6,000 ft. Lewotolo and Merapi are also under alert levels 2 and 3 respectively. Semeru continues to erupt, with ash plumes reaching 15,000 ft, prompting aviation warnings. Marapi remains at alert level 2.

Other Notable Activity

Beyond these hotspots, several other volcanoes are being closely monitored. Dukono in Indonesia is at alert level 2. In Alaska, Shishaldin remains at an “Advisory” level, while Great Sitkin is at a “Watch” level with continued lava eruption. Atka is also under an advisory. In Mexico, Popocatépetl continues to erupt, with ash plumes impacting aviation. Santiaguito and Sangay in Guatemala and Ecuador, respectively, are also exhibiting ongoing eruptive activity. Piton de la Fournaise in La Réunion is also erupting, with lava flow activity concentrated on the southern flank.

Understanding Volcanic Alert Levels

Volcanic alert levels are crucial for communicating the potential hazards associated with volcanic activity. These levels, while varying slightly between countries, generally indicate the severity of unrest and the potential for eruption. A higher alert level signifies increased risk and the need for heightened preparedness.

Recent Ashfall Advisories

Recent Volcanic Ash Advisory Center (VAAC) reports highlight the potential for ashfall to disrupt air travel. Advisories were issued for Ibu, Popocatépetl, Sangay, and Semeru, indicating ash plumes reaching altitudes that could impact aircraft.

FAQ

• What does a “Level 2” alert indicate? A Level 2 alert typically indicates increased unrest with potential for escalation, requiring restrictions on access to the volcano.
• How do scientists monitor volcanoes? Scientists use a variety of tools, including seismographs, gas sensors, and satellite imagery, to monitor volcanic activity.
• Is volcanic ash dangerous? Yes, volcanic ash can be hazardous to health, disrupt air travel, and damage infrastructure.

Pro Tip: Stay informed about volcanic activity in your area by following updates from local authorities and monitoring agencies.

Did you know? The Pacific Ring of Fire is home to approximately 75% of the world’s active and dormant volcanoes.

To learn more about volcanic activity and preparedness, explore resources from the Japan Meteorological Agency and the Smithsonian Institution’s Global Volcanism Program.

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