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

The amplitude of seismic tremor is high.

The infrasonic activity is high. The acoustic pressure of explosions is medium, 1.27 bar (standard values <1 bar). The amplitude of puffing is medium, ~93 mbar.

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

Thermal activity of explosive events is medium. The number of thermal transients in the NE sector of the crater (standard = 100) is high, 248. The amplitude of thermal transients is low, 8 ºF. Exit velocity of pyroclasts, estimated through thermal camera analysis, is low, 13 m/s.

MODIS thermal anomalies: no thermal anomalies.

Rockfall activity is high. The number of rockfalls is 16 per day.

SO₂ flux in the NE sector of the crater terrace is low, 53 t/d

CO₂ flux based on the C/S of 6.48 mesured at 03:20 UTC on 2024/08/08 is low, 361 t/d

Indice di Attività Vulcanica: medium

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

The volcanic activity is generally characterized by strombolian explosions, with ash emissions, and degassing (puffing) both located at the NE crater sector. In the last 24h, the Stromboli volcano showed a HIGH degassing activity (puffing with values of about 93 mbar). The explosive activity is HIGH (max acoustic pressure 1.27 bar). The number of explosions (thermal transients) are HIGH, with a LOW thermal amplitude and LOW exit velocity of pyroclasts. The volcanic tremor shows HIGH values which are correlated with the high degassing activity. The number of VLP events showed MEDIUM values (9.4 events/hour). MODIS/VIIRS satellite data is not available. SO2 flux shows LOW values (last: 53 t/d recorded on the 09/08/2024), CO2 flux shows LOW values (last: 361 t/d based on C/S value of 6.48 recorded on the 08/08/2024). The rockfall activity is HIGH (16 events detected with LOW pseudo-volumes associated). The volcanic activity index is MEDIUM.