The number of VLP seismic events (standard values 5-12) is medium, 7.8 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is high. The acoustic pressure of explosions is low, 0.78 bar (standard values <1 bar). The amplitude of puffing is medium, ~50 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: 4 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 low, 47 t/d

CO₂ flux based on the C/S is not available

Indice di Attività Vulcanica: medium

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

In the last 24h, Stromboli volcano showed HIGH degassing activity (puffing/spattering with values of about 50 mbar) at the SW sector. This degassing regime was associated with a MEDIUM explosive activity (max. acoustic pressure 0.78 bar) located at SW and NE sectors. The volcanic tremor shows MEDIUM values. The number of VLP events is MEDIUM (7.8 events/hour). MODIS and VIIRS satellite images show LOW thermal anomalies (max 4 MW). SO2 flux is LOW (47 t/d). No new data of CO2 flux are avaiable. The rockfall activity is MEDIUM, with 10 evens detected in the past 24 hours having MEDIUM seismic energies. The Volcanic Activity Index is MEDIUM.