The number of VLP seismic events (standard values 5-12) is medium, 9.4 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.3 bar (standard values <1 bar). The amplitude of puffing is low, ~34 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 (00:42 UTC yesterday).

Rockfall activity is low. The number of rockfalls is 2 per day.

SO₂ flux in the NE sector of the crater terrace is medium, 74 t/d

CO₂ flux based on the C/S of 13.97 mesured at 03:20 UTC on 2025/08/10 is medium, 963 t/d

Indice di Attività Vulcanica: medium

• Seismic (VLP) rate MEDIUM
• Seismic tremor MEDIUM
• Puffing LOW
• Acustic pression of explosions LOW
• Thermal activity LOW
• SO₂ flux MEDIUM
• CO₂ flux MEDIUM
• Rockfall activity LOW

The volcanic activity is generally characterized by weak strombolian explosions located at the SW crater sector and degassing (puffing/spattering) located at SW and NE crater sectors. In the last 24h, the Stromboli volcano showed a MEDIUM degassing activity (puffing/spattering with values of about 34 mbar). The explosive activity is MEDIUM (max acoustic pressure 0.3 bar). The volcanic tremor shows MEDIUM values. The number of VLP events shows MEDIUM values (9.4 events/hour). MODIS/VIIRS thermal data shows LOW thermal anomalies (max 2 MW). SO2 flux shows MEDIUM values (last: 74 t/d recorded on the 10/08/2025), CO2 flux shows MEDIUM values (last: 963 t/d based on C/S value of 13.97 recorded on the 10/08/2025). The rockfall activity is LOW (n.2 events detected with LOW pseudo-volumes associated). The volcanic activity index is MEDIUM.