The number of VLP seismic events (standard values 5-12) is high, 12.3 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is very high, 40 bar (standard values <1 bar). The amplitude of puffing is low, ~0.8 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: 11 MW (01:00 UTC yesterday).

Rockfall activity is medium. The number of rockfalls is 8 per day.

SO₂ flux in the NE sector of the crater terrace is low, 45 t/d

CO₂ flux based on the C/S is not available

Indice di Attività Vulcanica: medium

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

In the last 24h, Stromboli volcano showed MEDIUM degassing activity (puffing/spattering with values of about 40 mbar) located at SW sector, associated with a MEDIUM explosive activity (max. acoustic pressure 0.8 bar) located both at the SW and NE sectors. The volcanic tremor shows MEDIUM values. The number of VLP events is HIGH (12.3 events/hour). MODIS and VIIRS satellite images show MEDIUM thermal anomalies. SO2 flux is LOW (45 t/d). The CO2 flux is not available. The rockfall activity is MEDIUM, with 8 event(s) detected in the last 24 hours. The Volcanic Activity Index is MEDIUM.