The number of VLP seismic events (standard values 5-12) is high, 19.1 events/hour.

The amplitude of seismic tremor is very high.

The infrasonic activity is high. The acoustic pressure of explosions is medium, 1.6 bar (standard values <1 bar). The amplitude of puffing is medium, ~60 mbar.

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

Thermal activity of explosive events is high. The number of thermal transients in the NE sector of the crater (standard = 100) is high, 500. The amplitude of thermal transients is low, 10 ºF. Exit velocity of pyroclasts, estimated through thermal camera analysis, is low, 15 m/s.

MODIS thermal anomalies are low: 9 MW (19:55 UTC yesterday).

Rockfall activity is low. The number of rockfalls is 2 per day.

SO₂ flux in the NE sector of the crater terrace is medium, 116 t/d

CO₂ flux based on the C/S is not available

Indice di Attività Vulcanica: high

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

The volcanic activity is characterized by Strombolian explosions and puffing located at NE crater sector. In the last 24h, degassing activity was HIGH (puffing 60 mbar), associated to spattering activity located at NE crater. The pressure of the explosions is HIGH (max acoustic pressure 1.6 bar). The number of thermal transients by thermal cameras is HIGH, with LOW amplitude and LOW exit velocity. The volcanic tremor showed HIGH to VERY HIGH values. The number of VLP events shows HIGH values (19.1 events/hour). MODIS/VIIRS images showed LOW thermal anomalies (max 9 MW). SO2 flux is MEDIUM while CO2 flux is not available. The rockfall activity is LOW. The volcanic activity index is HIGH.