Global Volcanic Unrest: A Snapshot of Current Activity

As of March 26, 2026, volcanic activity remains elevated across the globe, with ongoing eruptions and unrest reported in Japan, the Philippines, Indonesia, Alaska, Mexico, Ecuador, and Réunion Island. Monitoring agencies are closely watching these volcanoes, providing updates and assessing potential hazards.

Japan: Continued Monitoring of Kusatsu-Shirane and Sakurajima

In Japan, the Japan Meteorological Agency (JMA) continues to monitor Kusatsu-Shiranesan and Sakurajima. At Kusatsu-Shiranesan, unrest persists, with the alert level remaining at Level 2, restricting proximity to the crater. Sakurajima also remains active, with the alert level at Level 3, also restricting proximity to the volcano.

Philippines: Multiple Volcanoes Displaying Activity

The Philippines is experiencing significant volcanic activity, with several volcanoes exhibiting ongoing eruptions or unrest. Mayon volcano continues to show increased activity, with lava flows extending up to 3.8 km in the Basud Gully, 3.2 km in the Bonga Gully, and 1.3 km in the Mi-isi Gully. Canlaon, Taal, Bulusan, and Fuego are also exhibiting ongoing activity, with varying alert levels. Volcanic Ash Advisory Center (VAAC) Washington has issued advisories for Fuego and Sangay.

Indonesia: Frequent Eruptions and Elevated Alert Levels

Indonesia, situated within the Pacific Ring of Fire, is experiencing frequent volcanic eruptions. Activity continues at Ibu, Dukono, Lewotobi, Lewotolo, Merapi, Semeru, Karangetang, and Marapi, with alert levels ranging from 2 to 3. VAAC Darwin has issued warnings regarding ash plumes from Ibu and Semeru.

North America: Alaskan Volcanoes Under Watch

In the United States, the Alaska Volcano Observatory (USGS-AVO) is monitoring several volcanoes in the Aleutian Islands. Shishaldin and Atka are currently at Advisory level 2, while Great Sitkin remains at a Watch level 3, with ongoing lava eruptions. Kilauea in Hawaii is also under observation, with intermittent glow observed from vents, and remains at a Watch level 3.

Central and South America: Activity in Mexico, Ecuador, and Peru

Popocatépetl in Mexico continues to exhibit explosive activity, with VAAC Washington issuing ash plume advisories. In Ecuador, Sangay and Reventador are both experiencing ongoing eruptions, with alert levels of 2 and 3 respectively. Sabancaya in Peru also remains active, with gas and vapor plumes and a level 3 (Orange) alert.

Réunion Island: Piton de la Fournaise Eruption Continues

The eruption at Piton de la Fournaise on Réunion Island continues, with activity focused on the southern branch. The alert level remains at 3.

Understanding Volcanic Alert Levels

Volcanic alert levels are crucial for public safety. While specific scales vary by country, they generally indicate the level of unrest and potential for eruption. Higher levels typically trigger increased monitoring, evacuations, and restrictions on access to the volcano.

What do the alert levels mean?

• Level 1/Low: Normal background activity.
• Level 2/Advisory/Alert: Increased activity, potential for escalation.
• Level 3/Watch/Standby: Eruption possible, increased monitoring and preparedness.
• Level 4/Warning: Eruption in progress, significant hazards.

Frequently Asked Questions

• What causes volcanic eruptions? Volcanic eruptions are caused by the buildup of pressure from magma beneath the Earth’s surface.
• How are volcanoes monitored? Volcanoes are monitored using a variety of techniques, including seismographs, gas sensors, and satellite imagery.
• What are the hazards associated with volcanic eruptions? Hazards include ashfall, lava flows, pyroclastic flows, and lahars (mudflows).
• Can volcanic eruptions be predicted? While predicting the exact timing of an eruption is difficult, scientists can often forecast increased activity and issue warnings.

Pro Tip: Stay informed about volcanic activity in your area by following updates from local geological surveys and emergency management agencies.

For more detailed information on specific volcanoes, please refer to the websites of the monitoring agencies mentioned in this report: Japan Meteorological Agency, Philippine Institute of Volcanology and Seismology, Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi, United States Geological Survey, and Institut de Physique du Globe de Paris – Observatoire volcanologique du Piton de la Fournaise.

Do you have questions about volcanic activity? Share your thoughts in the comments below!