The number of VLP seismic events (standard values 5-12) is medium, 11.1 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 low. 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 are low: 2 MW (13:35 UTC yesterday).

Rockfall activity is low. The number of rockfalls is 1 per day.

SO₂ flux in the NE sector of the crater terrace is low, 44 t/d

CO₂ flux based on the C/S of 6.1 mesured at 19:20 UTC on 2026/01/15 is low, 337 t/d

Indice di Attività Vulcanica: medium

• Seismic (VLP) rate MEDIUM
• Seismic tremor MEDIUM
• Puffing MEDIUM
• Acustic pression of explosions LOW
• Thermal activity LOW
• SO₂ flux LOW
• CO₂ flux LOW
• 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 (11.1 events/hour). MODIS/VIIRS thermal data shows LOW thermal anomalies (max 2 MW). SO2 flux shows LOW values (last: 448 t/d recorded on the 16/01/2026), CO2 flux shows LOW values (last: 337 t/d based on C/S value of 6.1 recorded on the 15/01/2026). The rockfall activity is LOW (N.1 event detected with LOW pseudo-volumes associated). The volcanic activity index is MEDIUM.The Volcanic Activity Index is MEDIUM.