The number of VLP seismic events (standard values 5-12) is medium, 10.6 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.4 bar (standard values <1 bar). The amplitude of puffing is medium, ~64 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: no thermal anomalies.

Rockfall activity is high. The number of rockfalls is 29 per day.

SO₂ flux in the NE sector of the crater terrace is medium, 170 t/d

CO₂ flux based on the C/S of 32.61 mesured at 13:20 UTC on 2024/08/04 is very high, 5513 t/d

Indice di Attività Vulcanica: high

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

The volcanic activity is generally characterized by degassing activity and explosions located at the new NE crater sector. In the last 24h, the Stromboli volcano showed MEDIUM values of degassing activity and infrasonic amplitude of the explosions. The volcanic tremor shows MEDIUM values. The number of VLP events showed MEDIUM values (10.8 events/hour with low amplitude). SO2 flux shows MEDIUM values (last:170 t/d), CO2 flux shows VERY HIGH values (last: 5513 t/d based on C/S value of 32.6 recorded on the 04/08/2024). The rockfall activity is HIGH (29 events detected with LOW pseudo-volumes associated). The volcanic activity index is HIGH.