The number of VLP seismic events (standard values 5-12) is medium, 9.6 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is medium. The acoustic pressure of explosions is medium, 1.2 bar (standard values <1 bar). The amplitude of puffing is low, ~49 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 are low: 1 MW (12:36 UTC yesterday).

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

SO₂ flux in the NE sector of the crater terrace is low, 42 t/d

CO₂ flux based on the C/S of 13.24 mesured at 07:20 UTC on 2026/01/07 is medium, 492 t/d

Indice di Attività Vulcanica: medium

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

In the last 24h, Stromboli volcano showed MEDIUM degassing activity (puffing/spattering with values of about 47 mbar) located at SW sector, associated with HIGH VALUES of infrasonic pressure at both crater sectors of NE and SW (max. acoustic pressure 1.7 bar). The volcanic tremor shows HIGH values. The number of VLP events is MEDIUM (9.6 events/hour). MODIS and VIIRS satellite images show LOW thermal anomalies (1 MW). SO2 flux is LOW (42 t/d). The CO2 flux in last 24 hours is MEDIUM. The rockfall activity is LOW, with 3 event(s) detected in the past 24 hours. The Volcanic Activity Index is MEDIUM.