The number of VLP seismic events (standard values 5-12) is high, 16.6 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is high. The acoustic pressure of explosions is very high, 3.1 bar (standard values <1 bar). The amplitude of puffing is high, ~50 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: 21 MW (19:25 UTC yesterday).

Rockfall activity is high. The number of rockfalls is 13 per day.

SO₂ flux in the NE sector of the crater terrace is low, 58 t/d

CO₂ flux based on the C/S of 3.8 mesured at 09:20 UTC on 2026/08/18 is low, 363 t/d

Indice di Attività Vulcanica: high

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

The volcanic activity is characterized by Strombolian explosions located at NE crater sector and degassing (puffing/spattering) located at NE and SW crater sectors. In the last 24h, degassing activity (puffing/spattering) showed HIGH values (50 mbar). The explosive activity is VERY HIGH (max acoustic pressure 3.1 bar). The volcanic tremor shows HIGH values. The number of VLP events is HIGH values (16.6 events/hour). MODIS/VIIRS thermal data shows MODERATE thermal anomalies (max 21 MW) in the last 24 hours. SO2 flux shows LOW values (last: 58 t/d), CO2 flux is LOW (last: 363 t/d). The rockfall activity is HIGH (n. 13 events detected with LOW pseudo-volumes associated). The volcanic activity index is HIGH.