The number of VLP seismic events (standard values 5-12) is medium, 9.3 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.5 bar (standard values <1 bar). The amplitude of puffing is low, ~41.4 mbar.

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

Thermal activity of explosive events is low. The number of thermal transients in the NE sector of the crater (standard = 100) is low, 4. The amplitude of thermal transients is low, 1.2 ºF. Exit velocity of pyroclasts, estimated through thermal camera analysis, is low, 18 m/s.

MODIS thermal anomalies are low: 9.25 MW (00:18 UTC today).

Rockfall activity is low. The number of rockfalls is 5 per day.

SO₂ flux in the NE sector of the crater terrace is medium, 150 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 LOW
• Acustic pression of explosions LOW
• Thermal activity LOW
• SO₂ flux MEDIUM
• CO₂ flux not available
• Rockfall activity LOW

The volcanic activity is generally characterized by strombolian explosions and puffing mainly located at NE crater sector. In the last 24h, the Stromboli volcano shows a MEDIUM degassing activity (puffing 41.4 mbar). The pressure of the explosions is MEDIUM (max acoustic pressure 0.5 bar). The number of thermal transients is LOW, with LOW amplitude and LOW velocity of pyroclasts. The volcanic tremor shows HIGH values. The number of VLP events is MEDIUM (9.3 events/hour). MODIS/VIIRS images show LOW thermal anomalies (9.25 MW). The SO2 flux measured at the NE crater sector is MEDIUM (150 t/d). The rockfall activity is LOW (5 events detected in the last 24h, with LOW and MEDIUM seismic pseudo-volumes involved). The volcanic activity index is HIGH.