The number of VLP seismic events (standard values 5-12) is medium, 6.6 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is high. The acoustic pressure of explosions is low, 0.78 bar (standard values <1 bar). The amplitude of puffing is high, ~113 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 are low: 2 MW (12:00 UTC yesterday).

Rockfall activity: no rockfalls detected.

SO₂ flux in the NE sector of the crater terrace is medium, 149 t/d

CO₂ flux based on the C/S is not available

Indice di Attività Vulcanica: high

• Seismic (VLP) rate MEDIUM
• Seismic tremor HIGH
• Puffing HIGH
• Acustic pression of explosions LOW
• Thermal activity NOT AVAILABLE
• SO₂ flux MEDIUM
• CO₂ flux not available
• 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 0.78 bar). In the last 24h, the Stromboli volcano showed a VERY HIGH degassing activity (puffing/spattering with values of about 113 mbar). The volcanic tremor shows HIGH values. The number of VLP events is MEDIUM (6.6 events/hour). SO2 flux is MEDIUM (149 t/d). No measurements for CO2 flux were available in the last 24 hrs. MODIS and VIIRS satellite images show LOW thermal anomalies (2 MW). Rockfall activity is LOW with no events detected in the last 24h. The volcanic activity index is HIGH.