The number of VLP seismic events (standard values 5-12) is medium, 9.3 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.2 bar (standard values <1 bar). The amplitude of puffing is medium, ~60 mbar.

Tiltmeters analysis does not show any significant deformation of the volcano edifice

Thermal activity of explosive events is not available. The number of thermal transients in the NE sector of the crater(standard = 100) is not available. The amplitude of thermal transients is not available. Exit velocity of pyroclasts, estimated through thermal camera analysis, is not available.

MODIS thermal anomalies: no thermal anomalies.

Rockfall activity is low. The number of rockfalls is 3 per day.

SO₂ flux in the NE sector of the crater terrace is not available

CO₂ flux based on the C/S is not available

Indice di Attività Vulcanica: medium

• Seismic (VLP) rate MEDIUM
• Seismic tremor MEDIUM
• Puffing MEDIUM
• Acustic pression of explosions LOW
• Thermal activity NOT AVAILABLE
• SO₂ flux not available
• CO₂ flux not available
• Rockfall activity LOW

The volcanic activity is generally characterized by strombolian explosions and degassing (puffing/spattering) located at the SW crater sector. In the last 24h, the Stromboli volcano showed a HIGH degassing activity (puffing/spattering with values of about 60 mbar). The explosive activity is LOW (max acoustic pressure 0.2 bar). The volcanic tremor shows MEDIUM values. The number of VLP events shows MEDIUM values (9.3 events/hour). MODIS/VIIRS thermal data shows no thermal anomalies. SSO2 flux shows no new data LOW values (last: 47 t/d recorded on the 19/01/2026), CO2 flux shows no new data (last: 337 t/d based on C/S value of 6.1 recorded on the 15/01/2026). The rockfall activity is LOW (n.3 events detected with LOW pseudo-volumes associated). The volcanic activity index is MEDIUM. (NB Recorded data is affected by severe weather conditions: Strong wind and stormy weather)