The number of VLP seismic events (standard values 5-12) is medium, 9.8 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.78 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 low: 0.9 MW (01:30 UTC yesterday).

Rockfall activity is low. The number of rockfalls is 4 per day.

SO₂ flux in the NE sector of the crater terrace is low, 35 t/d

CO₂ flux based on the C/S of 22.4 mesured at 13:20 UTC on 2025/05/13 is medium, 528 t/d

Indice di Attività Vulcanica: medium

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

The volcanic activity is characterized by Strombolian explosions located at the NE crater sector and degassing (puffing/spattering) located prevalently at NE/SW crater sectors. In the last 24h, degassing activity (puffing/spattering) showed HIGH values (~80 mbar). The explosive activity is MEDIUM (max acoustic pressure 0.78 bar). The volcanic tremor shows MEDIUM values, with associated a MEDIUM number of VLP events (9.7 events/hour). MODIS/VIIRS thermal data shows LOW thermal anomalies. SO2 flux shows LOW values (last: 35 t/d ). The CO2 flux, estimated using a C/S ratio of 22.4 measured on 13/05/2025 at 13:20 UTC, shows MEDIUM values (528 t/d). The number of rockfall is LOW (4 events detected in the last 24 h having LOW seismic energies). The volcanic activity index is MEDIUM.