The number of VLP seismic events (standard values 5-12) is high, 14.3 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.21 bar (standard values <1 bar). The amplitude of puffing is low, ~30 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 high, 471. The amplitude of thermal transients is low, 0.5 ºF. Exit velocity of pyroclasts, estimated through thermal camera analysis, is low, 10 m/s.

MODIS thermal anomalies are low: 2 MW (20:00 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, 96 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 LOW
• Thermal activity MEDIUM
• SO₂ flux MEDIUM
• CO₂ flux not available
• Rockfall activity LOW

The volcanic activity is characterized by strombolian explosions and degassing activity (puffing) mainly located at the SW and NE crater sectors. In the last 24 hrs, explosive activity shows MEDIUM acoustic pressure (max 0.21 bar) and MEDIUM degassing activity (puffing 30 mbar). The number of VLP events is HIGH (14.3 events/hour). Thermal activity was characterized by HIGH number of thermal transients with LOW amplitudes and LOW exit velocities. The volcanic tremor is MEDIUM. MODIS/VIIRS images show LOW thermal anomalies. SO2 flux is MEDIUM (96 t/d). No measurements for CO2 flux were available in the last 24 hrs. Rockfall activity is LOW with 2 events detected. The volcanic activity index is MEDIUM.