The number of VLP seismic events (standard values 5-12) is medium, 10.2 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is high. The acoustic pressure of explosions is medium, 1.27 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: 17 MW (13:10 UTC yesterday).

Rockfall activity is medium. The number of rockfalls is 20 per day.

SO₂ flux in the NE sector of the crater terrace is not available

CO₂ flux based on the C/S is not available

Indice di Attività Vulcanica: high

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

The volcanic activity is generally characterized by strombolian explosions with MEDIUM pressure (max 1.27 bar) and mainly located at the NE crater sector. Degassing (puffing/spattering), located at the NE crater sector, is characterized by HIGH pressure values (about 80 mbar). The seismic tremor shows variations between MEDIUM and HIGH values. The volcano edifice does not show any significant deformation. The number of VLP events is MEDIUM (10.2 events/hour). The number of explosions detected by thermal camera is not available for technical reasons. MODIS/VIIRS thermal data show MEDIUM thermal anomalies (17 MW), measured the 4st September at 13:10 UTC. SO2 flux was not evaluated. CO2 was not evaluated. The rockfall activity is MEDIUM (20 events detected with LOW pseudo-volumes associated). The volcanic activity index is HIGH.