The number of VLP seismic events (standard values 5-12) is medium, 10.2 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is high. The acoustic pressure of explosions is medium, 1.15 bar (standard values <1 bar). The amplitude of puffing is high, ~100 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 low, 31. The amplitude of thermal transients is high, 30.9 ºF. Exit velocity of pyroclasts, estimated through thermal camera analysis, is low, 18 m/s.

MODIS thermal anomalies are medium: 14.98 MW (12:42 UTC yesterday).

Rockfall activity is medium. The number of rockfalls is 10 per day.

SO₂ flux in the NE sector of the crater terrace is high, 193 t/d

CO₂ flux based on the C/S of 5.36 mesured at 03:20 UTC on 2024/09/07 is high, 1336 t/d

Indice di Attività Vulcanica: high

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

The volcanic activity is generally characterized by strombolian explosions and puffing located at NE crater sector. In the last 24h, the Stromboli volcano shows a VERY HIGH degassing activity (puffing 100 mbar). The pressure of the explosions is MEDIUM (max acoustic pressure 1.15 bar). The number of thermal transients is LOW, with HIGH thermal amplitudes and LOW pyroclast exit velocities. The volcanic tremor shows HIGH values. The number of VLP events is MEDIUM (10.2 events/hour). MODIS/VIIRS images show MEDIUM thermal anomalies (max 14.98 MW). The SO2 flux measured at the NE crater sector is HIGH (193 t/d). The CO2 flux, based on the C/S ratio of 5.36, measured on 07/09/2024 at 03:20 UTC, is HIGH (1336 t/d). The rockfall activity is MEDIUM (10 events detected in the last 24h).The volcanic activity index is HIGH.