Global Volcanic Activity Update: Stromboli and Beyond – February 25, 2026

Volcanic activity continues across the globe, with ongoing eruptions and unrest at multiple sites. This report provides an overview of recent developments as of February 25, 2026, focusing on Stromboli, Italy, and other notable volcanic regions.

Stromboli, Italy: Continued Eruption

Eruptive activity at Stromboli continues, with the Instituto Nazionale di Geofisica e Vulcanologia-Osservatorio Etneo (INGV-Osservatorio Etneo) reporting ongoing activity on February 24, 2026. The alert level remains at “Yellow” (level 2 on a 4-level scale), while the aviation alert level is at “Orange” (level 3 on a 4-level scale).

Recent observations indicate a new lava flow erupted two days prior, on February 22, 2026, from the North Crater area onto the upper Sciara del Fuoco and continues to flow. No significant changes have been observed in seismic activity, degassing, or ground deformation.

Stromboli, one of the world’s most consistently active volcanoes, is located on the northernmost of the seven Eolian Islands, north of Sicily. The volcano’s current activity is centered on vents within the Sciara del Fuoco.

Other Volcanic Activity Updates (February 25, 2026)

Tenerife, Canary Islands (Spain)

The Instituto Geográfico Nacional (IGN) reports that activity at Tenerife remains at “Green – Early warning” (level 1 on a 4-level scale) as of February 24, 2026.

Kusatsu-Shirane, Honshu (Japan)

Unrest continues at Kusatsu-Shiranesan, with the Japan Meteorological Agency (JMA) maintaining the alert level at “Level 2 – Restriction on proximity to the crater” (on a 5-level scale) between February 23 and 24, 2026.

Philippines: Canlaon, Taal, Mayon

• Canlaon: Eruption continues, alert level at “2 – Moderate Level of Volcanic Unrest” (on a 0–5 level scale).
• Taal: Eruption continues, alert level at “1 – Low-Level Unrest” (on a 0–5 level scale), with reported plumes.
• Mayon: Increased tendency towards hazardous eruption, alert level “3” (on a 0–5 level scale). Lava effusion continues, with lava flow lengths of 3.8 km in the Basud Gully, 1.3 km in the Mi-isi Gully, and 2.3 km in the Bonga Gully. Sulfur dioxide emissions averaged 4,452 tonnes per day on February 24.

Indonesia: Multiple Volcanoes on Alert

Several Indonesian volcanoes remain at alert levels, including Dukono, Ibu, Karangetang, Raung, Lewotobi, Soputan, Lewotolo, Merapi, Semeru, and others, generally at Level 2 (“Alert”).

Other Notable Activity

• Aoba (Vanuatu): Minor eruption, alert level “3” (on a 0–5 level scale).
• Great Sitkin (Aleutian Islands, Alaska): Eruption continues, alert level “Watch” (level 3 on a 4-level scale).
• Shishaldin (Aleutian Islands, Alaska): Unrest continues, alert level “Advisory” (level 2 on a 4-level scale).

Conclusion

Volcanic activity remains dynamic across the globe. Continued monitoring and assessment by geological agencies are crucial for mitigating risks and ensuring public safety. This is a snapshot of the situation as of February 25, 2026, and conditions can change rapidly.