The number of VLP seismic events (standard values 5-12) is high, 14.9 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is high. The acoustic pressure of explosions is medium, 1.23 bar (standard values <1 bar). The amplitude of puffing is medium, ~80 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 medium: 19 MW (01:40 UTC yesterday).

Rockfall activity is low. The number of rockfalls is 3 per day.

SO₂ flux in the NE sector of the crater terrace is medium, 132 t/d

CO₂ flux based on the C/S is not available

Indice di Attività Vulcanica: high

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

The volcanic activity is generally characterized by strombolian explosions and puffing located at NE and SW crater sectors. In the last 24h, the Stromboli volcano showed a HIGH degassing activity (puffing with values of about 80 mbar). The pressure of the explosions is MEDIUM (max acoustic pressure 1.23 bar). The volcanic tremor shows HIGH values, with temporary increases up to VERY HIGH values. The number of VLP events showed HIGH values (14.9 events/hour). MODIS/VIIRS images showed MODERATE thermal anomalies (max 19 MW). SO2 flux in the last 24 hours shows MEDIUM values (132 t/d). The rockfall activity is LOW (3 events with LOW pseudo-volumes associated).The volcanic activity index is HIGH.