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

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.7 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 medium, 97. The amplitude of thermal transients is low, 1 ºF. Exit velocity of pyroclasts, estimated through thermal camera analysis, is low, 14 m/s.

MODIS thermal anomalies are low: 2 MW (20:35 UTC yesterday).

Rockfall activity: no rockfalls detected.

SO₂ flux in the NE sector of the crater terrace is low, 50 t/d

CO₂ flux based on the C/S of 8.48 mesured at 22:20 UTC on 2024/04/18 is medium, 710 t/d

Indice di Attività Vulcanica: medium

• Seismic (VLP) rate HIGH
• Seismic tremor MEDIUM
• Puffing LOW
• Acustic pression of explosions LOW
• Thermal activity MEDIUM
• SO₂ flux LOW
• CO₂ flux MEDIUM
• 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 0.7 bar) and LOW degassing activity (puffing 30 mbar). The number of VLP events is HIGH (12.0 events/hour). Thermal activity was characterized by MEDIUM 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 LOW (50 t/d). The CO2 flux, estimated based on a C/S ratio of 8.48, is MEDIUM (710 t/d), measured on 18/04 at 22:20 UTC. Rockfall activity is LOW with no events detected in the last 24h. The volcanic activity index is MEDIUM.