The number of VLP seismic events (standard values 5-12) is medium, 9.1 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.3 bar (standard values <1 bar). The amplitude of puffing is low, ~20 mbar.

Tiltmeters analysis does not show any significant deformation of the volcano edifice

Thermal activity of explosive events is medium. The number of thermal transients in the NE sector of the crater (standard = 100) is low, 39. The amplitude of thermal transients is medium, 27 ºF. Exit velocity of pyroclasts, estimated through thermal camera analysis, is medium, 30 m/s.

MODIS thermal anomalies: no thermal anomalies.

Rockfall activity: no rockfalls detected.

SO₂ flux in the NE sector of the crater terrace is low, 40 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 LOW
• Acustic pression of explosions LOW
• Thermal activity MEDIUM
• SO₂ flux LOW
• CO₂ flux not available
• Rockfall activity LOW

The volcanic activity is generally characterized by strombolian explosions located at the NE crater sector and puffing localized at the C crater sector. In the last 24h, the Stromboli volcano showed a MEDIUM degassing activity and LOW acustic pressure. The number of explosions (thermal transients) are LOW, with a MEDIUM thermal amplitude and MEDIUM exit velocity of pyroclasts. The volcanic tremor shows MEDIUM values. The number of VLP events is MEDIUM. MODIS/VIIRS images showed LOW thermal anomalies. The SO2 flux is LOW. The volcanic activity index is MEDIUM.