The number of VLP seismic events (standard values 5-12) is medium, 6.4 events/hour.

The amplitude of seismic tremor is very high.

The infrasonic activity is high. The acoustic pressure of explosions is low, 0.63 bar (standard values <1 bar). The amplitude of puffing is high, ~150 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: no thermal anomalies.

Rockfall activity: no rockfalls detected.

SO₂ flux in the NE sector of the crater terrace is medium, 111 t/d

CO₂ flux based on the C/S of 6.55 mesured at 07:20 UTC on 2024/11/21 is medium, 1037 t/d

Indice di Attività Vulcanica: high

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

The volcanic activity is generally characterized by strombolian explosions and degassing (puffing/spattering) located at the NE crater sector. Explosions are characterized by MEDIUM values of pressure (max 0.63 bar). In the last 24h, the Stromboli volcano showed a VERY HIGH degassing activity (puffing/spattering with values of about 150 mbar). The volcanic tremor shows VERY HIGH values. The number of VLP events is MEDIUM (6.4 events/hour). SO2 flux is MEDIUM (111 t/d). The CO2 flux is MEDIUM (daily mean flux of 1037 t/d based on a C/S ratio of 6.55 measured on 21/11/2024 at 07:20 UTC). MODIS/VIIRS images don't show thermal anomalies. The rockfall activity is LOW (no events detected during the last 24h). The volcanic activity index is HIGH.